CN111634811A - Boom protection devices, spreaders and lifting systems - Google Patents

Abstract

The invention provides a suspension arm protection device, a lifting appliance and a lifting system, wherein the suspension arm protection device comprises: the telescopic lifting device comprises a body and a first telescopic rod, wherein one end of the first telescopic rod is telescopically arranged on the body, and the other end of the first telescopic rod is provided with a first connecting part which is fixedly connected with one lifting arm; one end of the body, which is far away from the first telescopic rod, is provided with a second connecting part which is fixedly connected with the other suspension arm. According to the suspension arm protection device, the lifting appliance and the lifting system, the distance between the two suspension arms can be limited within a preset size; when the suspension arm is separated from the elevator due to the reasons of insufficient splicing of the splicing pin and the like, the suspension arm can be always positioned in the preset size around the other suspension arm under the action of the suspension arm protection device, so that the phenomenon that the suspension arm flies out at a high speed to injure workers is avoided, and the safety of drilling operation is improved.

Description

Boom protection devices, spreaders and lifting systems

technical field

The invention relates to the technical field of oilfield drilling tools, in particular to a boom protection device, a spreader and a lifting system.

Background technique

Drilling tools and other equipment need to be lifted or lowered into the well in the process of oil extraction. Due to the heavy weight of the tools and equipment required for oil extraction, serious safety accidents will be caused if the tools fall into the well or become loose. Therefore, safe production is an important indicator in oil exploitation.

In the prior art, the lifting or lowering of the drilling tool needs to rely on a hoisting system, and the hoisting system includes an elevator, a boom and a hoisting device that surround the drilling tool. Lifting ears are formed on both sides of the elevator, and the lifting ears include a first lifting lug and a second lifting lug; two lifting arms are connected to the end of the lifting device; On one lifting lug, the first lifting lug and the second lifting lug are connected by a plug pin, so that the lifting ring is fixed in the space enclosed by the first lifting lug, the second lifting lug and the plugging pin, and the lifting arm and the lifting lug are realized. card connection.

However, because the plug pins are only inserted into the through holes of the first lifting lug and the second lifting lug, when the plug pins are not inserted in place, it is easy to cause the lifting arm of the drilling tool during the lifting or lowering process. The lifting ring and the elevator are separated, the boom suddenly loses connection, and it flies out at a high speed, thereby injuring the surrounding personnel and causing serious safety accidents.

SUMMARY OF THE INVENTION

The present invention provides a boom protection device, a spreader and a hoisting system, so as to overcome the problem that the boom is easy to fly out and hurt people in the prior art.

The present invention provides a boom protection device, comprising: a body and a first telescopic rod, one end of the first telescopic rod is telescopically arranged on the body, and the other end of the first telescopic rod is provided with a A first connection part for fixed connection of a boom; a second connection part for fixed connection with another boom is provided at one end of the body away from the first telescopic rod.

The boom protection device as described above, wherein the first connecting part includes a mounting piece and a fixing piece detachably connected to the mounting piece; the fixing piece and the mounting piece are jointly enclosed for fixing the The cavity of the boom; and the mounting piece or the fixing piece is fixedly connected with the first telescopic rod.

The boom protection device as described above, wherein the mounting member includes two parallel and spaced mounting arms and an arc-shaped arm connected between the two mounting arms; the mounting arms are formed with external threads two through holes for penetrating the two mounting arms respectively; the outer thread segment is also screwed with a nut, and the nut is arranged on the fixing part away from the arc-shaped arm side.

The boom protection device as described above, wherein the fixing member is further provided with a first connection hole, the first telescopic rod is formed with a second connection hole; the first connection portion further comprises a first rope; One end of the first rope is fixedly connected to the other end of the first rope after passing through the first connection hole and the second connection hole.

In the above-mentioned boom protection device, wherein the first connection hole is arranged on an extension line connecting the two through holes.

The boom protection device as described above, wherein the boom protection device further comprises a second telescopic rod, one end of the second telescopic rod is telescopically disposed on the body, and the other end of the second telescopic rod is telescopically disposed on the body. One end is provided with the second connection portion.

The boom protection device as described above, wherein the body comprises a first wall plate, a second wall plate opposite to the first wall plate, and a second wall plate connected to the first wall plate and the second wall plate the side wall between the two walls; the second wall plate, the first wall plate and the side wall together form a receiving cavity; one end of the first telescopic rod extends through the first wall plate into the In the accommodating cavity, one end of the second telescopic rod extends into the accommodating cavity through the second wall plate.

The boom protection device as described above, wherein the body is further connected with a power system, and the power system is used for injecting fluid into the accommodating cavity so that the first telescopic rod and the second telescopic rod can be simultaneously Move in the opposite direction.

The present invention also provides a spreader, comprising two booms and the boom protection device as described above; the first connection part of the boom protection device is fixedly connected to one boom; the boom protection device The second connecting part of the device is fixedly connected with the other hanging arm.

The present invention also provides a hoisting system, comprising a hoisting device, an elevator and the above-mentioned hoisting device; one end of the hoisting arm of the hoisting device is connected to the elevator, and the other end of the hoisting arm is Connect the hoisting device described above.

In the boom protection device, the sling and the hoisting system provided by the present invention, by arranging a body and a first telescopic rod in the boom protection device, one end of the first telescopic rod is telescopically arranged on the body, and the other end of the first telescopic rod is telescopically arranged on the body. One end is provided with a first connection part for fixed connection with one boom; the end of the body away from the first telescopic rod is provided with a second connection part for fixed connection with another boom, so that the distance between the two booms is It can be limited to a preset size; when the boom is separated from the elevator due to the inappropriate insertion of the plug pin, the boom can always be located in the pre-set around the other boom under the action of the boom protection device. In order to avoid the phenomenon of the boom flying out at a high speed and injuring the staff, the safety of drilling operations is improved.

Description of drawings

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and the present invention is not limited to the following specific embodiments.

1 is a schematic diagram of the overall structure of a lifting system in an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of Embodiment 1 of the boom protection device in FIG. 1;

3 is a schematic structural diagram of the first connecting portion in FIG. 2;

FIG. 4 is a schematic structural diagram of Embodiment 2 of the boom protection device in FIG. 1;

FIG. 5 is a schematic structural diagram of Embodiment 3 of the boom protection device in FIG. 1 .

Description of reference numbers:

100: boom protection device;

110: body;

111: the second connecting part;

112: first siding;

113: second siding;

114: side wall;

120: the first telescopic rod;

121: the first connecting part;

130: mounting parts;

131: mounting arm;

132: arc arm;

140: fixing parts;

150: Nut;

160: first rope;

170: the second telescopic rod;

180: power system;

190: second rope;

200: boom;

300: elevator;

400: lifting device;

500: Insertion pin.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and the present invention is not limited to the following specific embodiments.

FIG. 1 is a schematic diagram of the overall structure of a hoisting system in an embodiment of the present invention. Please refer to FIG. 1 , the hoisting system includes: two hoisting arms 200 , a hoisting device 400 and an elevator 300 , the elevator 300 is used to fix the drill pipe, the two sides of the elevator 300 are formed with lifting ears, and the bottom end of the hoisting arm 200 can Hanging on the lifting lug, the plug pin 500 is inserted on the lifting lug, thereby preventing the suspension arm 200 from being separated from the elevator card 300 . The top end of the boom 200 may be connected with the hoisting device 400 . The hoisting device 400 may include a crane, and the crane may hoist the boom 200 through pulleys or top drives. The boom protection device 100 may be connected between two booms 200 . The top and bottom ends are the top and bottom ends of the boom 200 in the vertical direction.

FIG. 2 is a schematic structural diagram of Embodiment 1 of the boom protection device in FIG. 1 ; FIG. 3 is a structural schematic diagram of the first connecting portion in FIG. 2 . Referring to FIGS. 2 and 3 , this embodiment provides a boom protection device, including: a main body 110 and a first telescopic rod 120 , one end of the first telescopic rod 120 is telescopically disposed on the main body 110 , and the first telescopic rod 120 is retractable. The other end of the 120 is provided with a first connecting portion 121 for fixedly connecting with one boom 200 ;

Specifically, the boom protection device 100 includes a body 110 and a first telescopic rod 120 telescopically disposed on the body 110 . The body 110 may be cylindrical or cylindrical, and may extend in the horizontal direction. The first telescopic rod 120 may also extend substantially in the horizontal direction. One end of the first telescopic rod 120 may be disposed on the main body 110. 110 , or it can also be provided inside the body 110 . The other end of the first telescopic rod 120 can protrude from the body 110 .

In addition, one end of the first telescopic rod 120 disposed on the main body 110 can also move relative to the main body 110 along the length direction of the first telescopic rod 120 , so that the other end can change its protruding distance from the main body 110 . The first telescopic rod 120 can be telescopic in various ways. For example, the first telescopic rod 120 can be a piston rod, the body 110 can be cylindrical, and the piston of the piston rod can be arranged in the body 110 to achieve telescopic movement. Alternatively, the body 110 may be provided with a slide rail, and one end of the first telescopic rod 120 may be provided with a slider slidably mounted on the slide rail.

The main body 110 may be provided with a second connection portion 111 , and the second connection portion 111 may be fixedly connected with a boom 200 . The second connecting portion 111 may be implemented in various manners. For example, the second connecting portion 111 may be a hook, and the boom 200 may be provided with a hook that engages with the hook. Alternatively, the second connecting portion 111 may be fixed on the boom 200 by screwing.

One end of the first telescopic rod 120 protruding from the body 110 may be provided with a first connecting portion 121 , and the first connecting portion 121 may be fixedly connected with another boom 200 . The structure of the first connecting portion 121 may be the same as or different from that of the second connecting portion 111 , which is not specifically limited herein.

It can be understood that the first telescopic rod 120 and the main body 110 can move freely, that is, the first telescopic rod 120 can easily move relative to the main body 110 under the action of external force. A locking device may also be provided between the first telescopic rod 120 and the main body 110 , and the locking device can ensure that the first telescopic rod 120 and the main body 110 are fixed in the current position. There are various structures of the locking device. For example, it may include a locking tongue provided on the main body 110 and a plurality of insertion holes arranged on the first telescopic rod 120. The locking tongue can be fixedly connected with any one of the insertion holes, thereby starting the In other words, the insertion hole may be provided on the body 110 , and the locking tongue may be provided on the first telescopic rod 120 . No matter whether the first telescopic rod 120 and the main body 110 are locked or not, one end of the first telescopic rod 120 will not leave the main body 110, so that the distance between the other end of the first telescopic rod 120 and the main body 110 is limited within a size range. Since the first telescopic rod 120 and the body 110 are respectively connected with the two booms 200, it can be ensured that the distance between the two booms 200 can be limited within a preset size. The preset size can be set according to the actual safety distance, etc.

When connecting the boom 200 and the elevator 300, the first telescopic rod 120 can be extended outward from the main body 110, so that the bottom end of the boom 200 can be easily hung on the lifting lug from the outside to the inside, and the installation is convenient.

Taking the insertion pin 500 on the right side in FIG. 1 as an example, in the process of lifting or lifting, due to the heavy weight of the drilling tool, it is easy to cause the bottom end of the boom 200 on the right side to be connected to the elevator. When the lifting ears of 300 are separated, the bottom end of the boom 200 will move outwards in a direction away from the left boom 200, so that the distance between the two booms 200 becomes larger. When the distance reaches a preset size , the boom protection device 100 can limit the further movement of the boom 200 on the right side, so as to prevent the boom 200 from injuring the surrounding workers due to the excessive movement range of the boom 200 .

The boom protection device provided in this embodiment is provided with a main body and a first telescopic rod, one end of the first telescopic rod is telescopically set on the main body, and the other end of the first telescopic rod is provided with a telescopic rod for fixed connection with a boom. The first connecting part; the end of the body away from the first telescopic rod is provided with a second connecting part for fixed connection with another boom, so that the distance between the two booms can be limited within a preset size; When the jib is separated from the elevator due to reasons such as insufficient connection of the connecting pin, the jib can always be located within the preset size around the other jib under the action of the jib protection device, so as to prevent the jib from moving at high speed. The phenomenon of flying out and injuring staff occurs, which improves the safety of drilling operations.

Further, the first connecting portion 121 includes a mounting member 130 and a fixing member 140 detachably connected to the mounting member 130; the fixing member 140 and the mounting member 130 together form a cavity for fixing the boom 200; and the mounting member 130 or The fixing member 140 is fixedly connected with the first telescopic rod 120 .

Specifically, the mounting member 130 and the fixing member 140 can surround the column boom 200 , thereby realizing the fixing of the boom 200 . In an achievable manner, one end of the mounting member 130 and one end of the fixing member 140 are hingedly connected, and the other end of the mounting member 130 and the fixing member 140 may be connected by means of screw connection or snap connection. After the two are fixed, the shape of the cavity can be the same as the shape of the outer surface of the boom 200, so as to be engaged with the outer surface of the boom 200 to achieve a fixed connection. The detachable connection mode can facilitate the installation and disassembly between the boom protection device 100 and the boom 200 , and also facilitate adjustment of the connection position between the boom protection device 100 and the boom 200 , with high flexibility.

In another preferred embodiment, the mounting member 130 includes two parallel and spaced mounting arms 131 and an arc-shaped arm 132 connected between the two mounting arms 131; the mounting arms 131 are formed with external thread segments; Two through holes are formed on the fixing member 140 for penetrating the two mounting arms 131 respectively; the outer thread segment is also screwed with a nut 150 , and the nut 150 is arranged on the side of the fixing member 140 away from the arc-shaped arm 132 .

Specifically, the two mounting arms 131 and the arc-shaped arm 132 may form a substantially U-shaped mounting member 130 , the bottom of the U-shape may be the arc-shaped arm 132 , and the straight segments on both sides of the U-shape may be two mounting arms 131. The boom 200 may be arranged in a U-shape, the fixing member 140 may be a plate-like structure, and two through holes may be provided on it. The holes are respectively sleeved on the two mounting arms 131, and then the nut 150 is screwed onto the mounting arms 131, and the nut 150 can abut on the fixing member 140, thereby pressing the boom 200 against the arc-shaped arm 132. The method is easy to adjust, and can adapt to different diameters of the boom 200, and has high versatility.

In addition, the first telescopic rod 120 may be fixed on the fixing member 140 or may be fixed on the mounting member 130, which is not specifically limited herein.

4 is a schematic structural diagram of the second embodiment of the boom protection device in FIG. 1 ; please refer to FIG. 4 , preferably, the fixing member 140 is further provided with a first connection hole, and the first telescopic rod 120 is formed with a second connection hole; The first connection part 121 further includes a first rope 160 ; one end of the first rope 160 is fixedly connected to the other end of the first rope 160 after passing through the first connection hole and the second connection hole. The first rope 160 may be a structure such as a wire rope or a chain, and the two ends of the first rope 160 may be fixed by means of knotting or deadlocking of the wire rope. Since the first rope 160 has a certain degree of flexibility, it can play a buffering role and at the same time change the direction of the force between the boom protection device 100 and the boom 200 to avoid excessive force between the main body 110 and the first telescopic rod 120 large and damaged.

Further, the first connection hole is provided on the extension line connecting the two through holes, so as to facilitate the connection and disassembly of the fixing member 140 and the mounting member 130 .

FIG. 5 is a schematic structural diagram of Embodiment 3 of the boom protection device in FIG. 1 . Referring to FIG. 5 , on the basis of the above embodiment, the boom protection device 100 further includes a second telescopic rod 170 , one end of the second telescopic rod 170 is telescopically disposed on the body 110 , and the other end of the second telescopic rod 170 is telescopically disposed on the body 110 . A second connection portion 111 is provided.

Specifically, the structure and function of the second telescopic rod 170 are the same as those of the first telescopic rod 120 . For details, reference may be made to the above-mentioned embodiments, which will not be repeated here. The second telescopic rod 170 and the first telescopic rod 120 may be disposed on both sides of the main body 110, and the extension direction of the second telescopic rod 170 may be various. It protrudes obliquely downward, which is not specifically limited here. The first telescopic rod 120 and the second telescopic rod 170 can facilitate the installation of the two booms 200 and the elevator 300 , and can also make the boom protection device 100 more uniform in force.

The second connecting part 111 may also include a second rope 190 , a mounting member 130 and a fixing member 140 . The structure and function of the second rope 190 may be the same as those of the first rope 160 , that is, the structure of the second connecting part 111 may be the same as the above-mentioned first rope 111 . The structure of the connecting portion 110 is the same, and details are not repeated here. The first connecting portion 121 and the second connecting portion 111 can easily adjust the position of the boom protection device 100 and improve the safety performance.

When using the boom protection device 100 , the first connection part 121 and the second connection part 111 can be connected to the two booms 200 respectively, and then the position of the test boom protection device 100 can be connected, and the uppermost end of the boom protection device 100 can be separated from the boom 200 . The top end is more than 80cm, and the bottom end is more than 80cm away from the bottom end of the boom 200. Meanwhile, as the weight of the drilling tool increases, the position of the boom protection device 100 is closer to the bottom end of the boom 200 . When the drilling tool encounters resistance and needs to be lifted up, the boom protection device 100 can be moved to the direction close to the elevator 300 first, and then lifted up.

Further, the body 110 includes a first wall plate 112, a second wall plate 113 opposite to the first wall plate 112, and a side wall 114 connected between the first wall plate 112 and the second wall plate 113; the second wall plate 113, the first wall plate 112 and the side wall 114 together form an accommodation cavity; one end of the first telescopic rod 120 extends into the accommodation cavity through the first wall plate 112, and one end of the second telescopic rod 170 passes through the second wall plate 113 extends into the accommodating cavity. The first wall plate 112 and the second wall plate 113 may be located on the left and right sides of the side wall 114, the side wall 114 may be cylindrical, and the first telescopic rod 120 and the second telescopic rod 170 may extend from the first wall plate 112 and the second telescopic rod 170 respectively. The second wall plate 113 extends into the accommodating cavity. The above structure enables the axes of the first telescopic rod 120 and the second telescopic rod 170 to be parallel or coincident, which further balances the force on the boom protection device 100 . Meanwhile, the first telescopic rod 120 and the second telescopic rod 170 share one accommodating cavity, which can make the device compact.

On the basis of the above embodiment, the main body 110 is also connected with the power system 180, and the power system 180 is used for injecting fluid into the accommodating cavity to make the first telescopic rod 120 and the second telescopic rod 170 move in opposite directions at the same time. The power system 180 may be a hydraulic system or a pneumatic system. Taking a hydraulic system as an example, the power system 180 may include a hydraulic pump, the first telescopic rod 120 and the second telescopic rod 170 may both be hydraulic piston rods, and the hydraulic pump may be connected to the accommodating cavity. When the first telescopic rod 120 and the second telescopic rod 170 are required When the telescopic rods 170 are extended at the same time, hydraulic oil can be injected between the two, so as to push the first telescopic rod 120 and the second telescopic rod 170 to extend outward at the same time. Conversely, hydraulic oil can be injected between the piston of the first telescopic rod 120 and the first wall plate 112, and hydraulic oil can be injected between the piston of the second telescopic rod 170 and the second wall plate 113, so that the first telescopic rod 120 and the second telescopic rod 170 can be retracted at the same time. Preferably, the first telescopic rod 120 and the second telescopic rod 170 constitute a bidirectional hydraulic cylinder.

When the boom 200 and the elevator 300 need to be connected, the first telescopic rod 120 and the second telescopic rod 170 can be extended at the same time, and the two booms 200 can move freely. When the drilling tool needs to be lifted up, the first piston rod 120 and the second piston rod 170 need to be retracted at the same time, the boom 200 is in a natural sagging state, and the adjustment is faster.

This embodiment also provides a hoist, including two hoisting arms 200 and a hoisting arm protection device 100; the first connecting part 121 of the hoisting arm protection device 100 is fixedly connected with one hoisting arm 200; The connecting portion 111 is fixedly connected with the other boom 200 .

Specifically, the hoisting arm 200 can be in the shape of a rod, and two ends of the hoisting arm 200 can be provided with hoisting rings, so as to facilitate the connection with the hoisting device 400 and the elevator 300 . The structure of the boom protection device 100 may be the same as that of the above-mentioned embodiments, and the specific reference to the above-mentioned embodiments will not be repeated here.

When connecting the boom 200 and the elevator 300, the first telescopic rod 120 can be extended outward from the main body 110, so that the bottom end of the boom 200 can be easily hung on the lifting lug from the outside to the inside, and the installation is convenient.

Taking the insertion pin 500 on the right side in FIG. 1 as an example, in the process of lifting or lifting, due to the heavy weight of the drilling tool, it is easy to cause the bottom end of the boom 200 on the right side to be connected to the elevator. When the lifting ears of 300 are separated, the bottom end of the boom 200 will move outwards in a direction away from the left boom 200, so that the distance between the two booms 200 becomes larger. When the distance reaches a preset size , the boom protection device 100 can limit the further movement of the boom 200 on the right side, so as to prevent the boom 200 from injuring the surrounding workers due to the excessive movement range of the boom 200 .

In the spreader provided in this embodiment, by arranging the main body and the first telescopic rod, one end of the first telescopic rod is telescopically disposed on the main body, and the other end of the first telescopic rod is provided with a first telescopic rod for fixedly connecting with a boom. a connecting part; the end of the body facing away from the first telescopic rod is provided with a second connecting part for fixed connection with another boom, so that the distance between the two booms can be limited within a preset size; When the jib is separated from the elevator due to improper insertion and other reasons, the jib can always be located within the preset size around the other jib under the action of the jib protection device, so as to prevent the jib from flying outward at high speed. The phenomenon of injuring the staff occurs, which improves the safety of drilling operations.

This embodiment also provides a hoisting system, including a hoisting device 400 , an elevator 300 and a hoisting device;

Specifically, the elevator 300 and the hoisting device 400 may be common structures in the prior art. The structure of the spreader may be the same as that of the above-mentioned embodiments, and the specific reference to the above-mentioned embodiments will not be repeated here.

When connecting the boom 200 and the elevator 300, the first telescopic rod 120 can be extended outward from the main body 110, so that the bottom end of the boom 200 can be easily hung on the lifting lug from the outside to the inside, and the installation is convenient.

Taking the insertion pin 500 on the right side in FIG. 1 as an example, in the process of lifting or lifting, due to the heavy weight of the drilling tool, it is easy to cause the bottom end of the boom 200 on the right side to be connected to the elevator. When the lifting ears of 300 are separated, the bottom end of the boom 200 will move outwards in a direction away from the left boom 200, so that the distance between the two booms 200 becomes larger. When the distance reaches a preset size , the boom protection device 100 can limit the further movement of the boom 200 on the right side, so as to prevent the boom 200 from injuring the surrounding workers due to the excessive movement range of the boom 200 .

In the hoisting system provided in this embodiment, by arranging the main body and the first telescopic rod, one end of the first telescopic rod is telescopically disposed on the main body, and the other end of the first telescopic rod is provided with a first telescopic rod for fixed connection with a boom. a connecting part; the end of the body facing away from the first telescopic rod is provided with a second connecting part for fixed connection with another boom, so that the distance between the two booms can be limited within a preset size; When the jib is separated from the elevator due to improper insertion and other reasons, the jib can always be located within the preset size around the other jib under the action of the jib protection device, so as to prevent the jib from flying outward at high speed. The phenomenon of injuring the staff occurs, which improves the safety of drilling operations.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Back, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or Elements must have a particular orientation, be constructed and operate in a particular orientation and are therefore not to be construed as limitations of the invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between the two components, unless otherwise expressly qualified. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and defined, a first feature "on" or "under" a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch. Also, a first feature being "above", "over" and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature "below", "below" and "below" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

In the above description, references to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc. refer to the specific features, structures described in connection with the embodiment or example. , material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (10)

1. A boom protection device, comprising: a body and a first telescopic rod, one end of the first telescopic rod is telescopically arranged on the body, and the other end of the first telescopic rod is provided There is a first connecting part for fixedly connecting with one boom; one end of the body away from the first telescopic rod is provided with a second connecting part for fixedly connecting with another boom. 2 . The boom protection device according to claim 1 , wherein the first connecting part comprises a mounting piece and a fixing piece detachably connected to the mounting piece; the fixing piece and the mounting piece are common. 3 . A cavity for fixing the boom is formed; and the mounting piece or the fixing piece is fixedly connected with the first telescopic rod. 3 . The boom protection device according to claim 2 , wherein the mounting member comprises two parallel and spaced-apart mounting arms and an arc-shaped arm connected between the two mounting arms; the An external thread segment is formed on the mounting arm; two through holes for penetrating the two mounting arms are respectively formed on the fixing member; the external thread segment is also screwed with a nut, and the nut is arranged on the A side of the fixing member facing away from the arc-shaped arm. 4 . The boom protection device according to claim 3 , wherein the fixing member is further provided with a first connection hole, and the first telescopic rod is formed with a second connection hole; the first connection hole is formed. 5 . The part also includes a first rope; one end of the first rope is fixedly connected to the other end of the first rope after passing through the first connection hole and the second connection hole. 5 . The boom protection device according to claim 4 , wherein the first connection hole is arranged on an extension line connecting the two through holes. 6 . 6. The boom protection device according to any one of claims 1-5, wherein the boom protection device further comprises a second telescopic rod, one end of the second telescopic rod is telescopically disposed at the On the body, the other end of the second telescopic rod is provided with the second connecting portion. 7 . The boom protection device of claim 6 , wherein the body comprises a first wall plate, a second wall plate opposite to the first wall plate, and a second wall plate connected to the first wall plate. 8 . The side wall between the second wall board and the second wall board; the second wall board, the first wall board and the side wall together form a receiving cavity; one end of the first telescopic rod passes through the first wall board A wall plate extends into the accommodating cavity, and one end of the second telescopic rod extends into the accommodating cavity through the second wall plate. 8 . The boom protection device according to claim 7 , wherein the main body is further connected with a power system, and the power system is used for injecting fluid into the accommodating cavity to make the first telescopic rod and the The second telescopic rods move in opposite directions at the same time. 9 . A spreader, characterized in that it comprises two booms and the boom protection device according to any one of claims 1 to 8 ; the first connection part of the boom protection device is connected to one of the booms Fixed connection; the second connection part of the boom protection device is fixedly connected with the other boom. 10. A hoisting system, characterized in that it comprises a hoisting device, an elevator and the spreader according to claim 9; one end of the boom of the spreader is connected to the elevator, and the end of the boom is The other end is connected with the lifting device.

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