TWM617334U - Device capable of flexibly expanding output torsion of multiplier wrench - Google Patents

Abstract

A device and method for elastically expanding the output torque of a multiplier wrench. The device includes a connecting bush and a special multiplier. The output torque of the force wrench is increased; the input end of the connecting bush is made into a buckle mechanism that matches the size and type of the output end of the torque wrench, and the other end is made to match the size and type of the input end of the special multiplier The buckle mechanism is fixed with bolts and other fasteners to prevent detachment after being sleeved. The special multiplier system is equipped with a buckle mechanism integrated with the housing or made into an integral type at both ends of the shell. The size of the input end buckle mechanism and the output end buckle mechanism of the connecting bush The type is the same, and the size and type of the output end buckle mechanism and the reaction force arm or the input end buckle mechanism of another connecting bush are the same; the reaction force arm is set on the output end buckle mechanism of the special force multiplier, and the reaction force When the arm is locked, it presses against the peripheral fixing seat to support the reaction force from the screw fastener.

Description

Device capable of elastically expanding output torque of multiplier wrench

This creation provides a device and method that can flexibly expand the output torque of the multiplier wrench. The output end buckle mechanism of the torque wrench and the special multiplier input buckle mechanism are formed by connecting the bushing to form an integrated type. The rigid structure to increase the output torque of the double-strength wrench.

Torque Multiplier (Torque Multiplier) is a torsion amplification device made with a gear reduction mechanism. The greater the reduction ratio, the greater the torque magnification, and the slower the rotation speed of the output end. The output end of the shell of the multiplier is provided with a buckle design integrally formed or made with the shell, whereby a reaction arm or any device that can bear the reaction force generated when the bolt is tightened is sleeved.

Multiplier wrench refers to a multiplier (gear reduction mechanism) driven by manual torque wrench, pneumatic or electric motor and other power to drive different torque magnification. It is commonly known as Nut Runner or Torque wrench. Multiplier).

The industry usually uses double-strength wrenches for large-torque bolt-locking operations, which use manual torque wrenches, pneumatic or electric motors to drive gear reduction mechanisms with different reduction ratios to amplify the locking torque. The greater the reduction ratio, the greater the output torque, the lower the output speed, and the worse the work efficiency. Most companies combine tool handles with the same size and specifications with pneumatic or electric motors, and then combine them with multipliers with different gear reduction ratios to provide a series of multiplier wrenches with large and small torques.

Because of the large-torque bolt locking operation, it usually needs to be gradually tightened in several rounds in order to achieve a uniform locking torque. For example, using a 6,000NM high-torque double-strength wrench, the reduction ratio can be as high as 2,000:1 (that is, the input end rotates at 6,000 revolutions per minute, and the output end only rotates 3 times) to lock the target torque For screw fasteners with a force of 5,000 NM, the first wheel is pre-locked to 1,500 NM, and the second wheel is then locked to 5,000 NM. In order to reduce the output torque of the first wheel, the air pressure or voltage of the tool needs to be lowered, but at the same time the speed It will also drop even lower, affecting the construction efficiency to a huge extent. In addition, the 6,000NM-capable Bili wrench has a high reduction ratio of the gear reduction mechanism, and the number of stages of the reduction gear box is as many as 4 to 5, which makes the tool heavier. , The operator is not easy to hold and the load is heavy, and it is easy to get tired. In order to improve, the industry usually needs to prepare a faster, lighter, and smaller torque (for example, 2,000NM) Peli wrench for the first round of locking. Due to the high cost of such tools, it is not a small burden for the industry to replace tools with different capabilities depending on the size of the tightening torque.

Please refer to FIGS. 1A to 1C. The reaction arm 10 of FIG. 1A is integrated with the housing 201 of the multiplier 20. The housing 211 of the multiplier 21 in FIG. 1B contains a one-stage reduction gear mechanism 215, and the housing 221 of the multiplier 22 in FIG. 1B contains a two-stage reduction gear mechanism 225. The models are all made to match the output end of the torque wrench. As shown in Figure 1B and Figure 1C, if the housings 211, 221, and 231 of the multiplier 21, 22, and 23 are not integrated with the reaction arm, they need to be made with the output ends 213, 223, and 233 immediately after the force. The shells 211, 221, and 231 are integrally made or combined into buckle mechanisms 214, 224, and 234 to sleeve the reaction force arm 11.

Please refer to Figures 2A, 2B and 3, as shown, Figures 2A and 2B are driven by a manual torque wrench 40 to drive the force multipliers 20, 23 and reaction arms 10, 11 of Figures 1A and 1C In the formed manual power spanner, the output ends 203 and 233 drive a sleeve 30 to lock the spiral fastener 301 with an enlarged torque. At the same time, as shown in FIG. 3, the rigid structure 101 around the spiral fastener 301 is tightened by the reaction arm 10, and the strength of the rigid structure 101 needs to be able to support the reaction force during locking.

Please refer to Figures 4A and 4B. As shown in the figure, the conventional multipliers 21, 22, and 23 are connected in the housings 211, 221, and 231 to make different reduction ratios and torques with more than one reduction gear mechanism. Magnification. The top view of FIG. 4A is a schematic cross-sectional view of a one-stage reduction gear mechanism 215, and the bottom view of FIG. 4A is a schematic cross-sectional view of a two-stage reduction gear mechanism 225. The power multiplier 21 of FIG. 4B is a schematic view of the external appearance of the power multiplier 21 of FIG. 4A, and the power multiplier 22 of FIG. 4B is a schematic view of the external appearance of the power multiplier 22 of FIG. 4A.

Please refer to FIGS. 5A to 5D, which show that the pneumatic torque wrench 50 is combined with the multipliers 21, 22, and 23 respectively and combined with the reaction arms 11, 11', and 11" to form as shown in FIG. 5B, FIG. 5C, and FIG. 5D Pneumatic double-strength wrenches (or electric double-strength wrenches) with different torques. Most of the industry uses the same set of pneumatic torque wrench 50 (or electric torque wrench) with different reduction ratios and torque magnification ratios 21, 22 and 23 are combined with reaction arms 11, 11', and 11" to produce a series of pneumatic double-strength wrenches (or electric double-strength wrenches) covering the range of large and small torque capabilities, as shown in Figures 5B to 5D. In addition, the reaction arms 11, 11', 11" matched with the power multipliers 21, 22, 23 are different, and the power multiplier 23 is larger than the power multiplier 22, and the power multiplier 22 is larger than the power multiplier 21. The size, strength and weight are that the reaction force arm 11" is larger than the reaction force arm 11', and the reaction force arm 11' is larger than the reaction force arm 11.

Please refer to FIG. 6A, FIG. 6B, and FIG. 7. FIG. 6A and FIG. 6B show the method of amplifying the torque force commonly used in the industry. Figure 6A uses a manual torque wrench to drive the first force multiplier, and then use the output end of the first force multiplier to drive the second force multiplier. During the locking process, the first reaction arm and the second force multiplier must be used simultaneously The reaction arm supports the reaction force. In addition, Figure 7 shows that the manual torque wrench drives a multi-stage high reduction gear ratio multiplier from the input end.

This creation provides a device that can flexibly expand the output torque of the multiplier wrench, which connects the output end buckle mechanism of the torque wrench with the bushing sleeve and the input end buckle mechanism of the special multiplier To form a one-piece rigid structure to increase the output torque. This creation has the advantage of low cost of use and the convenience of operation, which greatly enhances the effective use of the industry.

This creation uses the input end buckle mechanism of a connecting bush to be sleeved on the output end buckle mechanism of a torque wrench, and the other end is sleeved on the input end buckle mechanism of a special multiplier. These buckle mechanisms can be It is any mechanism that prevents relative rotation of the two ends of the socket and the strength of the buckle mechanism is sufficient to support the load generated during the locking process. In this way, this creation can use a low-torque and high-speed torque wrench. According to the required locking torque, the connecting bush can be elastically sleeved with special power multipliers of different torque magnifications, and even multi-layer stacking can be used. The special power multiplier combination to achieve different output torque. In addition to effectively improving the efficiency of construction and reducing the load of operators, this creation can also greatly reduce the purchase cost of tools.

In one embodiment, the special power multiplier of this creation is a torque amplification device made of a gear reduction mechanism. The greater the reduction ratio, the greater the torque magnification, the greater the output torque, and the slower the rotation speed of the tool output end. , The main difference from the commercially available power multiplier is that both ends of the shell of the special power multiplier need to be made into an integral combination with the shell or an integral snap mechanism with the shell.

In one embodiment, the function of the connecting bush is equivalent to the reaction arm (Reaction Arm), so it can be called a reaction ring (Reaction Ring), and its purpose is to support the reaction from the screw fastener during the locking process force. When the connecting bush is sleeved with another special power multiplier, it replaces the first reaction force arm used by the first special multiplier. The connecting bushing is combined with the shell of another special power multiplier by means of a buckle mechanism. The connecting bush can be a coaxial ring or non-coaxial ring structure, as long as the output shaft of the torsion wrench can smoothly drive the input shaft of the special multiplier, and the multiplier can be driven by the special multiplier. The two housings can be connected into a rigid integrated structure. Snapping machine for connecting bushings The structure can be a coaxial tooth bolt structure or any rigid structure that connects the output end of the multiplier wrench and the two shells of the connected special multiplier into an integral rigid structure, and the structural strength must be able to withstand the amplified output torque .

In one embodiment, the special power multiplier of this creation is different from the conventional power multiplier. The special power multiplier of this creation needs to be integrated with or made into one body at both ends of the shell. Buckle mechanism. The buckle mechanism of the input end of the special double power device must be made to match the size and type of the buckle mechanism of the output end of the connecting bush, and the buckle mechanism of the output end shall be made into the input end of the other connecting bush to be sleeved. The size and type of the buckle mechanism are the same, or it is made to match the size and type of the input end buckle mechanism of the reaction arm, or it is made to match the size and type of the input end buckle mechanism of other devices, and the other connecting liner The sleeve, reaction arm or other device is used to withstand the reaction force generated when the bolt is tightened.

In one embodiment, the reaction ring of the present creation is made of metal or non-metallic material that can support the structural strength of the two connected shells, so as to connect the output end buckle mechanism of the torque wrench and The input end buckle mechanism of the special power multiplier connects the two into one, and the output shaft of the torque wrench and the input shaft of the special power multiplier can be smoothly transmitted, so that the torque wrench can be selected according to the required torque. Special power multipliers with different magnifications are connected to elastically amplify the output torque. The connecting bushing of this invention can also be designed elastically to connect the bushing mechanism according to the type of the input and output ends of the two connected shells, so that the two will not move relative to each other.

In one embodiment, the present creation can also be applied to a parallel transmission mechanism for torque augmentation of parallel shafts to drive another special power multiplier. The output end buckle mechanism of the torsion wrench still needs to be connected to the input end buckle mechanism of the parallel transmission mechanism with a component equivalent to the function of the connecting bush. The invention can be applied to a coaxial ring mechanism.

In one embodiment, this creation can be connected to the same connecting bushing with special power multipliers of different magnifications, but one end of the input end cap of each special power multiplier needs to be made into the output end of the connecting bush The size and type of the buckle mechanism. The other end of the input end cover is made into a compatible size and type according to the input end buckle mechanism of the shell of the special multiplier.

In one embodiment, the buckle mechanism is a rigid mechanism provided at the input and output ends of the torsion wrench or the special power multiplier, the input and output ends of the connecting bushing, and the reaction arm, and has sufficient strength to support the socket The latter two objects will not rotate relative to each other. The buckle mechanism can be made into any type of structure, such as regular or irregular shapes such as tooth bolts.

In one embodiment, the torsion expansion method of this creation can be used to lock the torque according to the need, with one or more connecting bushes, one or more special power multipliers, and flexible multi-layer sleeves are stacked on various torsion plates. The output end of the hand, in order to achieve the purpose of amplifying the torque.

In one embodiment, the reaction force arm is sleeved on the output end of a torque wrench or a special power multiplier to withstand the reaction force generated when the bolt is tightened. The reaction force arm is usually made according to the shape of the periphery of the screw fastener. Into various types. The reaction force arm is connected to the output end of a torque wrench or a special power multiplier when used in this creation. The reaction force arm can also be integrated with the connection bushing of this creation.

In this way, the device that can flexibly expand the output torque of the multiplier wrench is created by connecting the bushing and the special multiplier (the shell of the special multiplier is equipped with buckle mechanisms at both ends), allowing the user The torque wrench with a small torque can be combined and expanded flexibly, quickly, and cost-effectively to achieve the greater torque required by the user.

10: Reaction Arm

101: rigid structure

11: Reaction arm

11’: Reaction Arm

11": reaction force arm

111: Input end buckle mechanism

20: Double power device

201: Shell

202: input end

203: output end

21: Double power device

211: Shell

212: input end

213: power end

214: buckle mechanism

215: Reduction gear mechanism

22: Double power device

221: Shell

222: input end

223: power end

224: buckle mechanism

225: Reduction gear mechanism

23: Double power device

231: Shell

232: input end

233: power

234: Snap Mechanism

30: sleeve

301: Spiral fastener

40: manual torque wrench

401: output end buckle mechanism

50: Pneumatic torque wrench

501: Output end buckle mechanism

60: connecting bushing

601: Input end buckle mechanism

602: output end buckle mechanism

61: Connecting bushing

611: Input end buckle mechanism

612: Output end buckle mechanism

70: Special power multiplier

701: shell

702: Input end buckle mechanism

703: Output end buckle mechanism

704: Reduction gear mechanism

70’: Special power multiplier

701’: Shell

702’: Input end buckle mechanism

703’: Output end buckle mechanism

704’: Reduction gear mechanism

70": Special power multiplier

701": shell

702": Input end buckle mechanism

703": Output end buckle mechanism

704": Reduction gear mechanism

71: Special power multiplier

711: Shell

712: Input end buckle mechanism

713: output end buckle mechanism

72: Special power multiplier

721: Shell

722: Input end buckle mechanism

723: output end buckle mechanism

73: Special power multiplier

731: Shell

732: Input end buckle mechanism

733: output end buckle mechanism

73’: Special power multiplier

731’: Shell

732’: Input end buckle mechanism

733’: Output end buckle mechanism

Figure 1A is the first schematic diagram of the conventional multiplier.

Figure 1B is the second schematic diagram of the conventional multiplier.

Figure 1C is the third schematic diagram of the conventional multiplier.

Fig. 2A is a schematic diagram 1 of the composition of a conventional manual power spanner.

Figure 2B is a second schematic diagram of the composition of a conventional manual double-strength wrench.

Figure 3 is a schematic diagram of the application of the conventional manual double-strength wrench.

Fig. 4A is a schematic structural diagram of a gear reduction device of a conventional multiplier.

Fig. 4B is a schematic diagram of the appearance of a conventional multiplier.

FIG. 5A is the first structural schematic diagram of the amplified torque of the conventional pneumatic double-strength wrench.

Fig. 5B is a second schematic diagram of the structure of the conventional pneumatic double-strength wrench with amplified torsion.

Fig. 5C is a third schematic diagram of the structure of a conventional pneumatic double-strength wrench with amplified torsion.

Fig. 5D is the fourth structural schematic diagram of the amplified torque of the conventional pneumatic double-strength wrench.

FIG. 6A is a schematic structural diagram of a conventional torque extension device of a manual multi-strength wrench.

Fig. 6B is a schematic diagram of the application of the conventional manual double-strength wrench.

FIG. 7 is a schematic diagram of another structure of a conventional torque extension device of a manual multi-strength wrench.

Figure 8A is the first structural diagram of the connecting bush of this creation.

Figure 8B is the second structural diagram of the connecting bush in this creation.

Fig. 9A is the first structural diagram of the shell and the buckle mechanism of the special power multiplier created by this invention.

Fig. 9B is the second structural diagram of the shell and the buckle mechanism of the special power multiplier created by this invention.

Fig. 9C is the third structural diagram of the shell and the buckle mechanism of the special power doubler created by this invention.

Fig. 10 is a schematic diagram of the structure of a manual double-strength wrench using the device created by this invention to increase the torsion force.

Figure 11A is an exploded schematic diagram of a pneumatic double-strength wrench using the device created by this invention to amplify the torque.

Fig. 11B is a schematic diagram of a combination of a pneumatic double-strength wrench using the device created by this invention to amplify the torsion force.

Fig. 12A is a schematic diagram 1 of another structure of a pneumatic double-strength wrench using the device created by this invention to amplify the torsion force.

Fig. 12B is another schematic diagram of the second structure of the pneumatic double-strength wrench using the device created by this invention to amplify the torsion force.

Figure 12C is the third schematic diagram of another structure in which the pneumatic double-strength wrench uses the device created by this invention to increase the torsion force.

Figure 13 is an exploded schematic diagram of a pneumatic double-strength wrench using the device created by this invention to amplify torsion.

Figure 14 is another exploded schematic diagram of the pneumatic power spanner applying the device created by this invention to amplify the torsion force.

In order to fully understand the purpose, features and effects of this creation, we will use the following specific embodiments and accompanying drawings to give a detailed description of this creation. The description is as follows: please refer to Figure 8A and Figure 8B, which Show the connecting bushing 60, 61 of this creation. As shown in FIG. 8A, the input end snapping mechanism 601 of the connecting bush 60 can be made into a polygonal shape, or as shown in FIG. As shown in 8A and 8B, the output end buckle mechanisms 602, 612 of the connecting bushes 60, 61 can be made into a tooth-bolt type structure. In addition, the connecting bushes 60, 61 can also be made into a combined structure that can be rigidly joined without mutual rotation according to the type and size of the output end buckle mechanism or the input end buckle mechanism of the special multiplier to be sleeved. .

Please refer to Figures 9A to 9C, which show the shells 701, 711, and 721 of the special multipliers 70, 71, 72 and the input buckle mechanisms 702, 712, 712, 712, 712, 712, 712, 712, The combination of different types of 722 and output end buckle mechanism 703, 713, 723. The input end buckle mechanism 702 and the output end buckle mechanism 703 of the special multiplier 70 of FIG. 9A are respectively combined with the joint ends on both sides of the housing 701. The input end buckle mechanism 702 and the output end buckle mechanism 703 are respectively combined with The size and type of the buckling mechanisms at the joint ends of the two sides of the housing 701 are consistent. The reduction gear mechanism (not shown) is assembled in the housing 701 and located between the input end buckle mechanism 702 and the output end buckle mechanism 703. The output end buckle mechanism 713 of the special multiplier 71 of FIG. 9B is integrally processed with the housing 711, and the reduction gear mechanism (not shown) is assembled in the housing 711 After that, the input end buckle mechanism 712 is combined with the housing 711. The input end buckle mechanism 722 of the special power multiplier 72 of FIG. 9C is integrally processed with the housing 721. After assembling the reduction gear mechanism (not shown) in the housing 721, the output end buckle mechanism 723 is combined with the housing 721.体721.

Please refer to Figure 10, which shows the structure of the device created by this invention applied to a manual multi-strength wrench to increase the torque. When the device of this creation is applied, one of the special multipliers 70, 71, 72 as shown in FIGS. 9A to 9C can be used to sleeve the connecting bushes 60, 61 as shown in FIGS. 8A and 8B. one of them. As shown in Figure 10, the output shaft of the output end buckle mechanism 401 of the manual torque wrench 40 is assembled with the input shaft hole of the input end buckle mechanism 732 of the special multiplier 73, and the output end of the manual torque wrench 40 is clamped The output shaft of the buckle mechanism 401 has the same size and type as the input shaft hole of the input end buckle mechanism 732 of the special multiplier 73. The output end snap mechanism 733 of the special multiplier 73 is sleeved on the input of the connecting bush 60 The size and type of the end buckle mechanism 601, the output end buckle mechanism 733 of the special multiplier 73 and the input end buckle mechanism 601 of the connecting bush 60 match, and then the output end buckle mechanism 602 of the connecting bush 60 is sleeved In one of the special power multipliers 70, 71, 72 shown in FIGS. 9A to 9C, the output end buckle mechanism 602 of the bushing 60 and the input end snap mechanism 732' of the special power multiplier 73' are connected The size and type of the special power multiplier 73’ are consistent with the output end buckle mechanism 733’ sleeved with the reaction arm 11 to start the locking operation. The output end snap mechanism 733’ of the special power multiplier 73’ and the reaction The size of the input end buckle mechanism 111 of the force arm 11 conforms to the type. In addition, the two special power multipliers 73, 73' of this embodiment are directly processed on the outer edges of the housings 731, 731' to make the input end buckle mechanisms 732, 732’ and the output end buckle mechanisms 733, 733’. .

Please refer to FIG. 11A, which shows the structure of the device of this creation applied to a pneumatic double-strength wrench (or an electric double-strength wrench) to increase the torque. The output end buckle mechanism 501 of the small torque and high speed pneumatic torque wrench 50 is sleeved on the input end buckle mechanism 601 of the connecting bush 60. The connecting bush 60 may be the connecting bush 60 shown in FIGS. 8A and 8B. , 61, the size and type of the output end snap mechanism 501 of the pneumatic torque wrench 50 and the input end snap mechanism 601 of the connecting bush 60 match, and then the output end snap mechanism 602 of the connecting bush 60 The buckle mechanism 702, 702' of the input end connected to the special multiplier 70, 70', 70", 702" (The input end buckle mechanisms 702, 702', 702" of this embodiment are of the same size and form and are matched with the output end buckle mechanism 602 of the connecting bush 60 to facilitate the use of connecting bushes of the same size and form The sleeve 60 is sleeved with the same input end buckle mechanism 702, 702', 702", among which the special multipliers 70, 71, 72 are of different specifications), the special multipliers 70, 70', 70" can be shown in Figure 9A to One of the special multipliers 70, 71, 72 shown in FIG. 9C connects the output end snapping mechanism 602 of the bushing 60 with the input end snapping mechanism 702, 70', 70" of the special multiplier 70, 70', 70". The dimensions of 702' and 702" are consistent with the model. The special power multiplier 70, 70', 70" can be made into a variety of specifications with different size reduction ratios and torque magnifications, and the output end buckle mechanism 703, 703', 703 of the special power multiplier 70, 70', 70" "Respectively match reaction arms of different sizes and types.

Please refer to Figure 11B, which shows the pneumatic torque wrench 50, the connecting bushing 60 and the special power multiplier 70" sleeved reaction arm 11".

As mentioned above, the torque wrenches 40, 50, connecting bushes 60, 61 and special power multipliers 70, 70', 70", 71, 72, 73, 73' of this creation can be combined into a one-piece structure. In addition, , The connecting bushes 60, 61 can be made of metallic or non-metallic materials, and the structural strength of the connecting bushes 60, 61 is suitable for supporting torsion wrenches 40, 50 and special power multipliers 70, 70', 70", 71 , 72, 73, 73'. This creation can also provide a method that can flexibly expand the output torque of the double-strength wrench by connecting the input end buckle mechanisms 601, 611 and output end buckle mechanisms 602, 612 of the bushings 60 and 61 respectively. Torque wrenches 40, 50 and special multipliers 70, 70', 70", 71, 72, 73, 73' to increase the output torque, the special multipliers 70, 70', 70", 71, 72 , 73, 73' have multiple torsion magnifications.

Please refer to Figure 12A, which shows the disassembled state of the connecting bushing 60, the special multiplier 70, 70', 70" and the pneumatic torque wrench 50 (or electric torque wrench). The connecting bushing 60 can be shown in FIGS. 8A and One of the connecting bushes 60, 61 shown in 8B, the special power multiplier 70, 70', 70" can be one of the special power multipliers 70, 71, 72 shown in FIGS. 9A to 9C, The special power multiplier 70 can have a single-stage reduction gear mechanism 704 so that the input torque can be amplified, and the special power multiplier 70' can have a multi-stage reduction gear mechanism 704' to make the output The input torque can be amplified, and the special multiplier 70" can have a multi-stage reduction gear mechanism 704" so that the input torque can be amplified. Figure 12B shows the combined state of the connecting bushing 60, the special multiplier 70, 70', 70" and the pneumatic torque wrench 50 (or electric torque wrench) of Figure 12A, and Figure 12C shows the connecting sleeve 60, the special multiplier The combined state of the device 70, 70', 70", pneumatic torque wrench 50 (or electric torque wrench) and reaction arm 11. The connecting bushing 60 of FIGS. 12A to 12C and FIGS. 11A and 11B can be of the same specification, size and type, and the production and inventory costs can be reduced by manufacturing uniform specifications, but FIGS. 12A to 12C and FIGS. 11A and 11B The connecting bushing 60 can also be changed in size or buckle structure according to different requirements.

Please refer to Figure 13, which shows that the pneumatic double-strength wrench (or electric double-strength wrench) uses more than one connecting bushing and more than one special double-strength device. In this way, the basic type of pneumatic double-strength wrench (or electric double-strength wrench) (which has a connecting bush and a special double-strength device) can be used to cost-effectively perform a variety of high-torque locking operations.

Please refer to Figure 14, which shows a pneumatic double-strength wrench (or electric double-strength wrench) applying more than one connecting bushing and more than one special double-strength device through a parallel transmission mechanism. In this way, the pneumatic double-strength wrench can implement large-span torque transmission and torque amplification through the parallel transmission mechanism, which can effectively play a role in the assembly work of special stations.

This creation has been disclosed in a preferred embodiment above, but those familiar with this technology should understand that this embodiment is only used to describe the creation, and should not be interpreted as limiting the scope of this creation. It should be noted that all changes and replacements equivalent to this embodiment should be included in the scope of this creation. Therefore, the scope of protection of this creation shall be subject to the scope of the patent application.

50: Pneumatic torque wrench

501: Output end buckle mechanism

60: connecting bushing

601: Input end buckle mechanism

602: output end buckle mechanism

70: Special power multiplier

701: shell

702: Input end buckle mechanism

703: Output end buckle mechanism

70’: Special power multiplier

701’: Shell

702’: Input end buckle mechanism

703’: Output end buckle mechanism

70": Special power multiplier

701": shell

702": Input end buckle mechanism

703": Output end buckle mechanism

Claims (8)

A device capable of elastically expanding the output torque of a double-strength wrench, comprising: a connecting bush having an input end snapping mechanism and an output end snapping mechanism, and the input end snapping mechanism of the connecting bush is used for sleeve connection The output end snapping mechanism of the torque wrench, the output end snapping mechanism of the connecting bush is used to sleeve the input end snapping mechanism of the special multiplier; and the special multiplier, which has a single-stage or multi-stage reduction gear The mechanism enables the input torque to be increased. The special power multiplier has a housing, an input end snapping mechanism and an output end snapping mechanism. The input end snapping mechanism of the special multiplier is sleeved on the output end of the connecting bushing The buckle mechanism combines the torsion wrench, the connecting bush and the special power multiplier into an integrated structure. The device according to claim 1, wherein the connecting bush is made of a metal material, and the structural strength of the connecting bush is suitable for supporting the torsion wrench and the special power multiplier. The device according to claim 1, wherein the connecting bush is made of a non-metallic material, and the structural strength of the connecting bush is suitable for supporting the torsion wrench and the special power multiplier. The device according to claim 1, wherein the size and type of the input end buckle mechanism of the connecting bush and the output end buckle mechanism of the torque wrench are consistent with each other, and the output end buckle mechanism of the connection bush is consistent with the special design The size and type of the buckle mechanism at the input end of the double power device are consistent with the type and fixed with fasteners after being sleeved. The device according to claim 1, wherein the size and type of the input end buckle mechanism of the special power multiplier and the output end buckle mechanism of the connecting bush conform to the size and type of the output end buckle mechanism of the special power multiplier and The size and type of the buckle mechanism at the input end of the reaction force arm or the buckle mechanism at the input end of another connecting bush are consistent with the type. The device according to claim 1, wherein the shell of the special power multiplier and the input end buckle mechanism of the special power multiplier are formed in combination, and the shell of the special power multiplier and the output of the special power multiplier The end buckle mechanism is a combination molding. The device according to claim 1, wherein the shell of the special power multiplier and the input end locking mechanism of the special power multiplier are integrally formed, or the shell of the special power multiplier and the special power multiplier The output end buckle mechanism is integrally formed. The device according to claim 1, wherein the size and form of the input shaft hole of the special force multiplier and the output shaft of the torsion wrench to be received are consistent with each other.

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