CN211816420U - Safety observation well and safety lock - Google Patents

Abstract

The utility model relates to a safety observation well and a safety lock, which comprise a well edge, a well cover and a safety lock. The well cover is hinged to the edge of the well edge through a horizontally arranged hinge shaft; the safety lock comprises: a protective sleeve, which is vertically fixed on the well edge. Along the side away from the hinge shaft, the top is provided with a socket, and the bottom is provided with a mounting opening; a threaded rod is vertically inserted into the protective sleeve from the socket, and its top is fixedly connected to the well cover; the lock sleeve , the diameter of which is larger than that of the jack and inserted into the protective sleeve through the installation opening. The top of the lock sleeve is threadedly connected with the threaded rod, the bottom is provided with a lock hole, and the inner wall of the lock hole is provided with a slot with an arc-shaped cross-section; the installation part, It includes a head that is inserted into the locking hole of the lock sleeve and a tail that extends out of the lower end of the protective sleeve. The side wall of the head is provided with an installation groove, and a number of balls are rotatably clamped in the installation groove. The card slots are snapped together. The utility model is not easy to be manually opened, so as to ensure the safety of the observation well.

Description

A safety observation well and safety lock

technical field

The utility model relates to the technical field of observation well safety, in particular to a safety observation well and a safety lock.

Background technique

In the field of water conservancy engineering, such as engineering construction and management, farmland water conservancy, groundwater research, etc., it is often necessary to observe changes in groundwater levels. The easiest way to observe groundwater levels is to use existing agricultural wells or other water wells for observation. Some agricultural wells or other water wells will have inaccurate measurement results, so most of them use special groundwater level observation wells.

Most of the existing groundwater level observation wells only set a manhole cover at the wellhead. Once the manhole cover is damaged, the external impurities will easily enter the observation well and cause adverse effects on the measurement results. In addition, due to the expensive equipment in the observation well, there are deliberate destruction and theft. Case.

Utility model content

Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a safety observation well and a safety lock, which are not easily opened by humans, so as to ensure the safety of the observation well.

The above-mentioned utility model purpose of the present utility model is achieved through the following technical solutions:

An observation well, comprising a well edge, a well cover and a safety lock, the well cover is hinged to the edge of the well edge through a horizontally arranged hinge shaft; the safety lock includes

a protective cover, which is vertically fixed on the side of the well rim away from the hinge shaft, and is provided with an insertion hole at the top and an installation opening with a diameter larger than the insertion hole at the bottom;

a threaded rod, which is vertically inserted into the protective sleeve from the insertion hole, and the top end of which is fixedly connected to the well cover;

The lock sleeve has a diameter larger than the socket and is inserted into the protective sleeve through the installation opening. The top of the lock sleeve is threadedly connected with the threaded rod, and the bottom is provided with a lock hole. The inner wall of the lock hole is provided with an arc-shaped cross-section. card slot;

The mounting piece includes a head inserted into the locking hole of the lock sleeve and a tail extending out from the lower end of the protective sleeve, the side wall of the head is provided with a mounting groove, and a number of balls are rotatably clamped in the mounting groove. It is snapped with the slot in the lock hole of the lock sleeve.

By adopting the above technical solution, the threaded rod fixed on the manhole cover is inserted into the protective sleeve, and is threadedly connected with the locking sleeve in the protective sleeve. The diameter of the locking sleeve is smaller than the protective sleeve and cannot pass through the socket, so that the threaded rod is limited to In the protective sleeve, the position of the manhole cover is limited, the head of the installation piece is inserted into the lock hole of the lock sleeve, and the ball arranged on the side wall of the head is clamped with the slot in the lock hole, so that when the installation piece rotates, It can drive the lock sleeve to rotate, and the end of the installation piece protrudes from the protective sleeve to facilitate manual operation and rotation, so as to realize the installation and removal of the lock sleeve and the threaded rod; After the installation parts are removed, when other objects are manually inserted into the lock holes to pick the lock, other objects are not easy to be engaged with the arc-shaped card slots, so that it is difficult to disassemble the lock sleeve and ensure the high security of the installation lock.

The utility model is further provided as follows: a handle is arranged at the tail of the mounting piece.

By adopting the above technical solution, the handle can be conveniently operated to rotate the mounting piece manually.

The utility model is further provided that: the tail of the mounting piece is provided with a horizontal mounting hole, and the handle is horizontally inserted into the mounting hole.

By adopting the above technical solution, the handle is inserted into the mounting hole at the tail of the mounting piece, which can be easily disassembled, thereby being convenient for storage and carrying.

The utility model is further provided that: the bottom end of the tail of the mounting piece is provided with a mounting block which is convenient for clamping in the horizontal direction of the wrench.

By adopting the above technical solution, using a wrench to clamp the mounting block horizontally can facilitate the manual rotation of the mounting piece.

The utility model is further configured as follows: a gap is left between the outer side wall of the head of the mounting piece and the inner side surface of the locking hole of the lock sleeve.

By adopting the above technical solution, when the head of the mounting piece is inserted into the lock hole, the ball slides into contact with the card slot, and due to the existence of a gap, no frictional force is generated between the outer side wall of the lock hole and the inner side of the lock hole, so that the head of the mounting piece is in sliding contact. The part is easy to insert into the keyhole.

The utility model is further provided as follows: the top edge of the head of the mounting piece is provided with a chamfer.

By adopting the above technical solution, the chamfer of the top end edge of the head of the mounting piece can facilitate its insertion into the locking hole of the lock sleeve.

The utility model is further provided that: the inner sidewall of the mounting groove of the mounting piece is set in an arc shape adapted to a plurality of the balls, and the notch of the mounting groove is provided with a limiting protrusion for constraining the balls in the mounting groove.

The utility model is further configured as follows: the edge of the well cover is provided with a mounting plate, the top end of the safety lock threaded rod is fixedly connected to the bottom surface of the mounting plate, and the bottom surface of the mounting plate is provided with a protrusion extending downward and surrounding the top side of the protective sleeve. edge.

By adopting the above technical solution, the flange on the mounting plate can protect the connection between the threaded rod and the mounting plate, and can prevent rainwater from entering the mounting cylinder.

The utility model is further provided that: the top of the well cover is provided with a handle.

By adopting the above technical solution, the handle can conveniently open or close the manhole cover.

To sum up, the beneficial technical effects of the present utility model are:

1. Since the cross-section of the card slot in the lock hole for the ball is curved, after pulling out the mounting part, when manually inserting other objects into the lock hole to pick the lock, it is not easy for other objects to be engaged with the arc-shaped card slot, so that the It is difficult to disassemble the lock sleeve, which ensures the high security of the installation lock;

2. Both the handle and the mounting block arranged on the mounting piece can facilitate the rotation of the mounting piece;

3. When the head of the mounting piece is inserted into the lock hole, the ball slides into contact with the card slot. Due to the gap, there is no friction between the outer side wall of the lock hole and the inner side of the lock hole, so that the head of the mounting piece is easy to insert into the lock. in the hole.

Description of drawings

Figure 1 is an exploded view of the safety observation well and the safety lock.

Figure 2 is a cross-sectional view of the safety lock.

FIG. 3 is a partial enlarged schematic view of part A in FIG. 2 .

Figure 4 is a schematic diagram of the structure of the safety lock.

Reference numerals: 1, well edge; 2, well cover; 21, hinge shaft; 22, mounting plate; 23, flange; 24, handle; 3, protective sleeve; 31, jack; 32, mounting port; 4, thread Rod; 5. Locking sleeve; 51. Threaded hole; 52. Locking hole; 53. Slot; 6. Mounting piece; 61. Head; 611. Mounting slot; 612. Ball; Chamfer; 615, gap; 62, tail; 621, mounting hole; 622, mounting block; 7, handle.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

1, it is a safety observation well and a safety lock disclosed by the utility model, including a well edge 1, a well cover 2 and a safety lock. The well cover 2 is hinged to the edge of the well edge 1 through a horizontally arranged hinge shaft 21. The safety lock It is arranged on the side of the well edge 1 and the well cover 2 away from the hinge shaft 21 .

1 and 2 , the safety lock includes a protective sleeve 3 , a threaded rod 4 , a locking sleeve 5 and a mounting member 6 . The protective sleeve 3 is cylindrical and is welded vertically to the side of the well 1 away from the hinge shaft 21 . The threaded rod 4 is vertically inserted into the socket 31 of the protective sleeve 3 , and the top of the threaded rod 4 is fixedly connected to the manhole cover 2 . The lock sleeve 5 has a cylindrical shape, which can be inserted into the protective sleeve 3 through the installation opening 32, and its diameter is larger than the insertion hole 31 of the protective sleeve 3. The inside of the lock sleeve 5 is provided with a stepped hole, and the stepped hole includes the upper threaded hole. 51 and the lock hole 52 with a lower diameter larger than the threaded hole 51, the threaded hole 51 is threadedly connected with the threaded rod 4, thereby confining the threaded rod 4 in the protective sleeve 3, and the inner wall of the lock hole 52 is provided with two oppositely positioned card slots 53 .

2 and 4, the mount 6 includes a head 61 and a tail 62 of one-piece construction. The head 61 is set in a cylindrical shape, and two installation grooves 611 are formed on the side wall of the head 61. The two installation grooves 611 communicate with the inner and outer sides of the side wall of the head 61 and extend to the top of the head 61. A number of balls 612 are rotatably embedded in the grooves 611 , the inner sidewall of the installation groove 611 is set in an arc shape that fits with the plurality of balls 612 , and the notch at the top of the installation groove 611 is provided to restrict the balls 612 in the installation groove 611 . The ball 612 protrudes from the outer side wall of the head 61 and can be engaged with the arc slot 53 in the lock hole 52. The tail portion 62 is in the shape of a vertical stepped shaft, the bottom of which protrudes from the installation port 32 of the protective cylinder, and the tail portion 62 is provided with a horizontal installation hole 621. A handle 7 is inserted horizontally in the installation hole 621, and the handle 7 can be easily disassembled , so as to facilitate storage and carrying. In addition, the bottom end of the tail portion 62 is provided with a mounting block 622 that is convenient for the wrench to be clamped in the horizontal direction.

2 and 3 , further, the top edge of the head 61 of the mounting member 6 is provided with a chamfer 614 to facilitate its insertion into the locking hole 52 of the lock sleeve 5 . There is a gap 615 between the outer side wall of the head 61 of the mounting member 6 and the inner side of the locking hole 52 of the lock sleeve 5. When the head 61 of the mounting member 6 is inserted into the locking hole 52, the ball 612 slides into contact with the slot 53, and the lock is locked. Due to the existence of the gap 615 between the outer side wall of the hole 52 and the inner side surface of the locking hole 52 , no frictional force is generated, so that the head 61 of the mounting member 6 can be easily inserted into the locking hole 52 .

1 and 2, the edge of the manhole cover 2 away from the hinge shaft 21 is provided with a mounting plate 22, the top end of the safety lock threaded rod 4 is welded to the bottom surface of the mounting plate 22, and the bottom surface of the mounting plate 22 is provided with a downward extending to surround the protection The flange 23 on the top side of the sleeve 3 can protect the connection between the threaded rod 4 and the mounting plate 22 and prevent rainwater from entering the protective sleeve 3 . The top surface of the well cover 2 is provided with a handle 24 to facilitate opening or closing of the well cover 2 .

The implementation principle of this embodiment is as follows: the threaded rod 4 fixed on the manhole cover 2 is inserted into the protective sleeve 3 and is threadedly connected with the lock sleeve 5 in the protective sleeve 3. The diameter of the lock sleeve 5 is smaller than that of the protective sleeve 3 and cannot be inserted from the protective sleeve 3. The hole 31 passes through, so that the threaded rod 4 is limited in the protective sleeve 3 to limit the position of the manhole cover 2; the head 61 of the mounting member 6 can be inserted into the locking hole 52 of the lock sleeve 5, and is arranged on the side of the head 61 The ball 612 on the wall is engaged with the card slot 53 in the lock hole 52, so that when the mounting member 6 rotates, the lock sleeve 5 can be driven to rotate, and the tail portion 62 of the mounting member 6 extends out of the protective cover 3 and is provided with a handle and a mounting block 622, In order to facilitate manual operation and rotation, the installation and disassembly of the lock sleeve 5 and the threaded rod 4 can be realized; since the cross-section of the clamping groove 53 in the lock hole 52 for clamping the ball 612 is arc-shaped, after pulling out the installation member 6, other objects can be used manually. When the lock is inserted into the lock hole 52 to pick the lock, other objects are not easy to be engaged with the arc-shaped card slot 53, so that it is difficult to disassemble the lock sleeve 5, which ensures the high security of the installation lock.

The examples of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention are not It should be covered within the protection scope of the present invention.

Claims (10)

1. A safety observation well, characterized in that: the safety well cover comprises a well edge (1), a well cover (2) and a safety lock, wherein the well cover (2) is hinged to the edge of the well edge (1) through a hinge shaft (21) which is horizontally arranged; the safety lock comprises

The protective sleeve (3) is vertically fixed on one side, away from the hinge shaft (21), of the well edge (1), the top of the protective sleeve is provided with a jack (31), and the bottom of the protective sleeve is provided with a mounting hole (32) with the diameter larger than that of the jack (31);

the threaded rod (4) penetrates through the jack (31) and is vertically inserted into the protective sleeve (3), and the top end of the threaded rod is fixedly connected to the well cover (2);

the diameter of the lock sleeve (5) is larger than that of the jack (31), the lock sleeve penetrates through the mounting port (32) and is inserted into the protective sleeve (3), the top of the lock sleeve (5) is in threaded connection with the threaded rod (4), the bottom of the lock sleeve is provided with a lock hole (52), and the inner wall of the lock hole (52) is provided with a clamping groove (53) with an arc-shaped section;

the mounting piece (6) comprises a head (61) inserted into the lock hole (52) of the lock sleeve (5) and a tail (62) extending out of the lower end of the protective sleeve (3), a mounting groove (611) is formed in the side wall of the head (61), a plurality of balls (612) are clamped in the mounting groove (611) in a rolling mode, and the balls (612) are clamped with clamping grooves (53) in the lock hole (52) of the lock sleeve (5).

2. A safety observation well according to claim 1, wherein: the tail part (62) of the mounting part (6) is provided with a handle (7).

3. A safety observation well according to claim 2, wherein: the tail part (62) of the mounting part (6) is provided with a horizontal mounting hole (621), and the handle (7) is horizontally inserted into the mounting hole (621).

4. A safety observation well according to claim 3, wherein: the bottom end of the tail part (62) of the mounting piece (6) is provided with a mounting block (622) which is convenient for clamping the wrench in the horizontal direction.

5. A safety observation well according to claim 1, wherein: and a gap (615) is reserved between the outer side wall of the head (61) of the mounting piece (6) and the inner side surface of the lock hole (52) of the lock sleeve (5).

6. A safety observation well according to claim 1, wherein: the top end edge of the head (61) of the mounting piece (6) is provided with a chamfer (614).

7. A safety observation well according to claim 1, wherein: the inner side wall of the mounting groove (611) of the mounting piece (6) is set to be arc-shaped and matched with the plurality of balls (612), and a limiting protrusion (613) limiting the balls (612) in the mounting groove (611) is arranged on a notch of the mounting groove (611).

8. A safety observation well according to claim 1, wherein: well lid (2) edge is provided with mounting panel (22), the top fixed connection of safety lock threaded rod (4) in the bottom surface of mounting panel (22), mounting panel (22) bottom surface is provided with flange (23) that downwardly extending surrounds in protective sheath (3) top side.

9. A safety observation well according to claim 1, wherein: the top of the well lid (2) is provided with a handle (24).

10. A security lock characterized by: comprises that

The protective sleeve (3) is provided with a jack (31) at the top and a mounting hole (32) with the diameter larger than that of the jack (31) at the bottom;

the threaded rod (4) is vertically inserted into the protective sleeve (3) from the insertion hole (31);

the diameter of the lock sleeve (5) is larger than that of the jack (31), the lock sleeve penetrates through the mounting port (32) and is inserted into the protective sleeve (3), the top of the lock sleeve (5) is in threaded connection with the threaded rod (4), the bottom of the lock sleeve is provided with a lock hole (52), and the inner wall of the lock hole (52) is provided with a clamping groove (53) with an arc-shaped section;

the mounting piece (6) comprises a head (61) inserted into the lock hole (52) of the lock sleeve (5) and a tail (62) extending out of the lower end of the protective sleeve (3), a mounting groove (611) is formed in the side wall of the head (61), a plurality of balls (612) are clamped in the mounting groove (611) in a rolling mode, and the balls (612) are clamped with clamping grooves (53) in the lock hole (52) of the lock sleeve (5).

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