Novel latch body lifting handle

Abstract

When a traditional wedge type breechblock is disassembled and assembled on a breech, steel bars need to be inserted into holes in the two sides of the upper end of a breechblock body, and then hoisting is conducted. The steel bar is generally not provided with a clamping device and is easy to slide out of holes at two ends of the latch body during movement, so that the latch body falls off and is damaged. The utility model discloses a novel latch body lifting handle which comprises a hollow cylindrical holding handle barrel, a chamfer and a clamping ring are arranged at the end of the hollow cylindrical holding handle barrel, and an L-shaped sliding groove is formed in the upper portion of the hollow cylindrical holding handle barrel and used for fixing a clamping device and providing a force application point when a latch body is pulled. The clamping device consists of a sliding shaft and a sliding pin and is used for realizing the fastening connection between the grip cylinder and the latch body; and the spring is used for realizing automatic ejection of the clamping device and limiting the position of the clamping device in a natural working state. The wedge type breechblock is convenient to operate, the clamping device and the breechblock body mounting hole form a clamping structure during use, deformation is difficult to occur, the lifting handle cannot slide out of the breechblock body, safety and reliability are achieved, and the problem that a wedge type breechblock is difficult to disassemble and assemble and unsafe in a traditional mode is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt body extraction devices, in particular to a novel bolt body handle. Background Art

[0002] When gunpowder is launched, the explosive will release a large amount of heat in the relatively airtight gun barrel composed of the bullet and the breech, increasing the air pressure in the gun barrel instantaneously, thereby pushing the bullet out of the gun barrel. In the era of breech-loading guns, the bolt body of the breech has become the key to forming a sealed space in the gun barrel. When it is locked in the working state, it can withstand the gas pressure and ensure that the gunpowder gas does not leak out; after the breech is opened, the cut opening part thereof communicates with the gun barrel, making it convenient to take and place the cartridge case, greatly improving the speed of loading the gun.

[0003] When disassembling and assembling the traditional wedge breech on the breech, steel rods need to be inserted into the holes on the wing plates on both sides of the cutting position of the bolt body, and then hoisted. Generally, the steel rods are not provided with clamping devices and are easy to slide out of the holes during movement, resulting in the bolt body falling and being damaged. At the same time, since the length of the steel rod is greater than the effective length between the inner walls of the wing plates of the bolt body, it can only be inserted from one end outside, thus requiring more operating space. Therefore, when it comes to the situation where the installation position of the breech is poor and the volume is large, it is often impossible to quickly take it out for emergency repair work, delaying the loading efficiency of the gun. Summary of the Utility Model

[0004] In order to solve the problems in the prior art that the traditional breech disassembly tool requires a large operating space, the hoisting process is unsafe, and the emergency repair efficiency is delayed, the utility model provides a novel bolt body handle, which greatly simplifies the operation process while safely disassembling the bolt body of the breech.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A novel bolt body handle, comprising

[0007] A grip tube, which is cylindrical and hollow inside; sliding grooves are symmetrically opened at both ends of the grip tube;

[0008] Two clamping devices, which are symmetrically installed inside both ends of the grip tube and are connected to the grip tube through the sliding grooves, and can perform axial movement and circumferential rotation within a certain range inside the grip tube;

[0009] A spring, which is arranged between the two clamping devices and provides a resilient potential energy for the clamping devices to move towards both ends of the grip tube.

[0010] Further, the sliding groove is in an L shape, one of the side grooves is an axial sliding side groove, which is opened along the axial direction of the grip tube; the other side groove of the sliding groove is a circumferential sliding side groove, which is opened circumferentially at one end of the axial sliding side groove far away from the end of the grip tube.

[0011] Furthermore, chamfers are provided at both ends of the grip tube.

[0012] Furthermore, a snap ring is provided on the inner wall of the end of the grip tube, and both ends of the grip tube.

[0013] Furthermore, the positioning device includes

[0014] a sliding shaft, which is in the shape of superimposed cylinders in the axial direction. The part installed inside the grip tube is a positioning shaft; the part extending out of the grip tube in the axial direction is a positioning shaft; positioning holes are provided on the positioning shaft;

[0015] a sliding pin, which is cylindrical and is connected to the positioning shaft through the positioning hole, and the sliding pin forms a keyway connection with the sliding groove.

[0016] Furthermore, the diameter of the positioning shaft is greater than the diameter of the positioning shaft, and the diameter of the positioning shaft is the same as the inner diameter of the grip tube; the diameter of the positioning shaft is the same as the inner diameter of the snap ring.

[0017] Furthermore, chamfers are provided at both ends of the sliding shaft.

[0018] Furthermore, a sliding pad is provided at the tail of the sliding pin.

[0019] Furthermore, a hemispherical anti-collision body is provided at the top of the sliding pin.

[0020] The beneficial effects of the present utility model are as follows: In the natural state, a balanced state is formed inside the latch body handle. Through the mutual cooperation between components, after the sliding shaft completely extends into the grip tube, the sliding shaft can be fixed by rotating the sliding pin circumferentially, thereby realizing a stable change in the length of the latch body handle, so as to adjust the angle and position between the external latch body wing plates. No continuous external force needs to be applied during the adjustment, which is convenient and labor-saving. After the sliding pin is rotated in the reverse direction, the spring will automatically drive the sliding shaft to pop out and insert into the holes on both sides of the latch body wing plate. The entire working process is simple to operate. The sliding shafts at both ends can be used separately according to the operating environment. When inserting into the latch body hole position, not much space is required, and the components are positioned through the size of the components and the latch body hole position, and the connection is stable. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1In the embodiment, it is a schematic diagram of the structure of the new latch body handle.

[0023] Figure 2 In the embodiment, it is a schematic diagram of the calibrated working state structure of the new latch body handle Figure 1 .

[0024] Figure 3 In the embodiment, it is a schematic diagram of the calibrated working state structure of the new latch body handle Figure 2 .

[0025] Figure 4 In the embodiment, it is a schematic diagram of the installation relationship between the new latch body handle and the latch body Figure 1 .

[0026] Figure 5 In the embodiment, it is a schematic diagram of the installation relationship between the new latch body handle and the latch body Figure 2 .

[0027] Figure 6 In the embodiment, it is an enlarged schematic diagram of the installation relationship between the new latch body handle and the latch body.

[0028] In the figure: 1 grip barrel, 11 sliding groove, 111 axial sliding side groove, 112 circumferential sliding side groove, 12 snap ring, 2 positioning device, 21 sliding shaft, 211 positioning shaft, 212 positioning shaft, 213 positioning hole, 22 sliding pin, 221 sliding pad, 3 spring. Specific embodiments

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0030] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.

[0031] The embodiments of the utility model will be described in detail below with reference to the accompanying drawings.

[0032] This embodiment provides a new latch body handle, referring to Figures 1 to 3, which includes a grip tube 1. The grip tube 1 is cylindrical and hollow inside. The grip tube 1 is used to install and fix other components and provide a force application point during the process of hoisting the latch body. The outer diameter of the grip tube 1 is larger than the diameter of the reserved hole of the external latch body to ensure that there will be no slipping during hoisting. Chamfers are set at both ends of the grip tube 1. The chamfers can avoid bumps and wear when a slight sliding occurs in the middle of the latch body hole in the working state of the handle.

[0033] The handle tube 1 has symmetrical L-shaped sliding grooves 11 at both ends of the tube wall. One side groove of the sliding groove 11 is opened along the axial direction of the handle tube 1, which is an axial sliding side groove 111. The other side groove of the sliding groove 11 is opened along the circumferential direction at one end of the axial sliding side groove 111 away from the end of the handle tube 1, which is a circumferential sliding side groove 112. The two side grooves have the same groove width. The sliding groove 11 is used to provide an installation space for connecting the handle tube 1 with other parts, so that the external force can produce a corresponding effect on the internal parts of the handle tube 1. The handle tube 1 is provided with a retaining ring 12 on the inner wall of the two ends. The retaining ring 12 is used to limit the position of the internal parts of the handle tube 1 so that the internal parts will not move out of the handle tube 1 along the axial direction.

[0034] The novel bolt body handle also includes a locking device 2, the main structure of which is installed in the grip tube 1 and is provided with a protruding structure. The protruding structure forms a keyway connection with the sliding groove 11, so that the locking device 2 can move within the limited length range at both ends of the grip tube 1. The diameter of the main structure of the locking device 2 is the same as the inner diameter of the grip tube 1, and can slide along the axial direction of the grip tube 1. When the axial outward movement is the farthest, the main structure of the locking device 2 abuts against the snap ring 12; and when the axial inward movement is the farthest, the protruding structure of the locking device 2 reaches the corner of the L-shaped sliding groove 11, that is, the intersection of the axial sliding side groove 111 and the circumferential sliding side groove 112. When the protruding structure of the locking device 2 reaches the farthest axial inward movement position, it can rotate circumferentially into the circumferential sliding side groove 112 to limit the axial movement of the locking device 2. The locking device 2 is used in conjunction with the grip tube 1 to adjust the axial length of the bolt body handle, thereby realizing the connection between the handle and the external bolt body.

[0035] The locking device 2 of this embodiment is composed of a sliding shaft 21 and a sliding pin 22. Figure 2, the sliding shaft 21 is in the shape of stacked cylinders in the axial direction. The part of the sliding shaft 21 installed inside the grip cylinder 1 is the positioning shaft 211. The diameter of the positioning shaft 211 is the same as the inner diameter of the grip cylinder 1, which can prevent relative off-axis movement and wear during axial movement. The part of the sliding shaft 21 extending out of the grip cylinder 1 in the axial direction is the clamping shaft 212. The diameter of the clamping shaft 212 is the same as the inner diameter of the snap ring 12 and slightly smaller than the diameter of the reserved hole position of the external latch body. The clamping shaft 212 is used to form an axial connection between the grip cylinder 1 and the external latch body. Chamfers are provided at both ends of the sliding shaft 21 to reduce the wear caused by bumping during the use of the handle. A positioning hole 213 is provided on the positioning shaft 211. The diameter of the positioning hole 213 is the same as the width of the sliding groove 11, which is used to fix the connecting piece, thereby restricting the movement range of the sliding shaft 21 inside the grip cylinder 1.

[0036] In this embodiment, the clamping device 2 further includes a sliding pin 22. The sliding pin 22 is cylindrical, and its diameter is the same as the diameter of the positioning hole 213. A hemispherical anti-collision body is provided at the top of the sliding pin 22, and a sliding pad 221 is provided at the bottom. The sliding pin 22 passes through the sliding groove 11 and the positioning hole 213 from the outside in sequence until the sliding pad 213 abuts against the inner wall of the grip cylinder 1, and then the sliding shaft 21 and the sliding pin 22 are welded and fixed to prevent the two from separating during the working process. At this time, the maximum moving length of the sliding shaft 11 in the axial direction is limited within the length range of the axial sliding side groove 111. The sliding pin 22 mainly undertakes the function of force transmission and forms a structure similar to a force arm. That is, the external force applied to the sliding pin 22 can be transmitted to the sliding shaft 21 inside the grip cylinder 1 through the sliding pin 22 to realize the axial movement and circumferential deflection of the sliding pin 21. The sliding pad 221 can reduce the wear generated when the sliding pin 22 slides relative to the grip cylinder 1, and ensure that the contact surface between the sliding pin 22 and the grip cylinder 1 always remains smooth.

[0037] In this embodiment, the new latch body handle further includes a spring 3. The spring 3 is arranged inside the grip cylinder 1 and abuts against the two sliding shafts 21 at both ends. The outer diameter of the spring coil of the spring 3 is the same as the inner diameter of the grip cylinder 1. In the completely free state, the length of the spring 3 is greater than the maximum distance that the two sliding shafts 21 can reach. Thus, in the natural state of the latch body handle, the internal spring 3 is compressed and has the potential energy of axial outward elongation, which can be transmitted to the two sliding shafts 21 to provide elastic potential energy for their movement towards both ends of the grip cylinder 1.

[0038] Refer to Figure 2, in this embodiment, when the latch body handle is in the natural state, the sliding pin 22 is located within the axial sliding side groove 111. Under the outward elastic force of the spring 23, the sliding shaft 21 is pushed towards the end of the grip cylinder 1 until it abuts against the snap ring 12. At the same time, the sliding pin 22 also reaches the end of the axial sliding side groove 111. Under the interaction of the elastic force of the spring 3, the supporting force of the snap ring 12, and the supporting force of the axial sliding side groove 111, the sliding shaft 21 is in force balance in the axial and circumferential directions, and its position is locked. At this time, the length of the entire latch body handle reaches the maximum length in the working state, and this length is greater than the distance between the reserved holes of the external latch body wing plates, so the latch body handle cannot be installed into the external latch body.

[0039] Refer to Figure 3 and Figure 4 , in this embodiment, when the latch body handle is inserted into the external latch body, the sliding shaft 22 is pulled towards the spring 3. The sliding shaft 22 drives the entire sliding shaft 21 to slide into the grip cylinder 1, and the spring 3 is compressed and retracted. When the sliding shaft 22 reaches the corner of the sliding groove 11, the sliding shaft 22 is rotated circumferentially, so that it enters the circumferential sliding side groove 112. At this time, the position of the clamping device 2 in the axial direction is locked, and there will be no axial movement after the external force is withdrawn. The overall length of the latch body handle is approximately equal to the length of the grip cylinder 1 and slightly less than the distance between the reserved holes of the external latch body wing plates. Thus, it can rotate within the external latch body groove and appropriately adjust the position of the latch body handle, solving the problem of a large construction range when inserting from the external hole, effectively reducing the space required for construction, and also simplifying the construction operation.

[0040] Refer to Figure 5 and Figure 6 , after aligning the clamping shaft 212 with the holes at both ends of the latch body, the sliding pin 22 is pulled in the opposite direction. Under the elastic force of the spring 3, the entire clamping device 2 automatically pops out towards both ends and abuts against the snap ring 12, returning to the Figure 2 state. At this time, the clamping shaft 212 is inserted into the external latch body hole, and since the outer diameter of the grip cylinder 1 is greater than the diameter of the external latch body hole, the latch body handle will not slip off.

[0041] The two clamping devices 2 at both ends of the latch body handle can be used separately according to the working environment and the shape of the latch body, thereby improving work efficiency. The present utility model realizes the relative fixation between the two through the shaft connection between the clamping device 2 and the external latch body hole, and realizes the hoisting of the external latch body by applying an external force to the grip cylinder 1. The operation process is simple and convenient. During work, it is difficult to retract the spring 3 except by manually pulling the sliding pin 22, overcoming the drawback of the previous use of a steel rod that would cause slipping. Therefore, it is safe and reliable when moving and disassembling the latch body of the gun bolt.

Claims

1. A new latch body handle, characterized in that, including a grip tube (1), which is cylindrical and hollow inside; sliding grooves (11) are symmetrically arranged at both ends of the grip tube (1); two clamping devices (2), which are symmetrically installed inside both ends of the grip tube (1) and are connected to the grip tube (1) through the sliding grooves (11), and can perform axial movement inside the grip tube (1); a spring (3), which is arranged between the two clamping devices (2) and provides a resilient potential energy for the clamping devices (2) to move towards both ends of the grip tube (1).

2. The novel latch body handle according to claim 1, wherein, The sliding groove (11) is in an L shape, one side groove of which is an axial sliding side groove (111) opened along the axial direction of the grip tube (1); the other side groove of the sliding groove (11) is a circumferential sliding side groove (112) opened circumferentially at one end of the axial sliding side groove (111) away from the end of the grip tube (1).

3. A novel latch body handle according to claim 1, characterized in that, Both ends of the grip tube (1) are provided with chamfers.

4. A novel latch body lifting handle according to any one of claims 1 to 3, characterized in that, A snap ring (12) is arranged on the inner wall of the end of the grip tube (1).

5. A novel latch body handle according to claim 4, characterized in that, The clamping device (2) includes a sliding shaft (21), which is in a stacked cylindrical shape in the axial direction, and the part of it installed inside the grip tube (1) is a positioning shaft (211); the part of the sliding shaft (21) extending out of the grip tube (1) in the axial direction is a clamping shaft (212); a positioning hole (213) is opened on the positioning shaft (211); a sliding pin (22), which is cylindrical, is connected to the positioning shaft (211) through the positioning hole (213), and the sliding pin (22) forms a keyway connection with the sliding groove (11).

6. The novel latch body handle according to claim 5, characterized in that, The diameter of the positioning shaft (211) is larger than the diameter of the clamping shaft (212), and the diameter of the positioning shaft (211) is the same as the inner diameter of the grip tube (1); the diameter of the clamping shaft (212) is the same as the inner diameter of the snap ring (12).

7. A novel latch body lifting handle according to claim 5 or 6, characterized in that, Both ends of the sliding shaft (21) are provided with chamfers.

8. A novel latch body lifting handle according to any one of claims 5 or 6, characterized in that, A sliding pad (221) is arranged at the tail of the sliding pin (22).

9. A novel latch body handle according to claim 8, characterized in that, A hemispherical anti-collision body is arranged at the top of the sliding pin (22).

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