CN219562845U

CN219562845U - Clamping tool for replacing cylinder sleeve of auxiliary pressure cylinder of gearbox

Info

Publication number: CN219562845U
Application number: CN202321377862.7U
Authority: CN
Inventors: 李兆停
Original assignee: Zhejiang Renewable Hand In Hand Automotive Components Co ltd
Current assignee: Zhejiang Renewable Hand In Hand Automotive Components Co ltd
Priority date: 2023-06-01
Filing date: 2023-06-01
Publication date: 2023-08-22
Anticipated expiration: 2033-06-01

Abstract

The utility model discloses a clamping tool for replacing a cylinder sleeve of a gearbox auxiliary pressure cylinder, which comprises a fixed seat, wherein a clamping cylinder is arranged on the fixed seat, a track hole is formed in the clamping cylinder, clamping blocks are arranged in the track hole, a plurality of clamping blocks are uniformly arranged around the center of the track hole at intervals, the clamping blocks mutually surround each other to form a clamping space for accommodating the clamping cylinder sleeve, and limiting pieces for limiting the relative positions of the clamping blocks are arranged between adjacent clamping blocks; the track hole is a taper hole with gradually smaller hole diameter in the direction of pointing to the cylinder cover, the outer wall of the clamping block is in butt contact with the wall of the taper hole, a telescopic piece is arranged on the fixing seat, the output end of the telescopic piece can push the clamping block to move towards the opening of the track hole along the wall of the track hole, and the clamping blocks are mutually close under the extrusion of the wall of the taper hole, so that the clamping space is contracted to clamp the cylinder sleeve.

Description

Clamping tool for replacing cylinder sleeve of auxiliary pressure cylinder of gearbox

Technical Field

The utility model belongs to the technical field of cylinder sleeve mounting structures of pressure cylinders, and particularly relates to a clamping tool for replacing a cylinder sleeve of a transmission auxiliary pressure cylinder.

Background

A pressure cylinder (also called a balancing cylinder or balancing valve) is a hydraulic element for controlling the pressure in a hydraulic system. Its main function is to apply a balanced pressure across the actuator (e.g., cylinder or motor) to counteract or compensate for pressure fluctuations due to moment imbalance caused by actuator movement. The principle of operation is to use the pascal principle in physics, i.e. there is pressure in every small part of the liquid, which is evenly distributed throughout the liquid. Therefore, when the piston movement directions of the two hydraulic cylinders are opposite, the two hydraulic cylinders can generate pressure with equal magnitude and opposite directions at two ends of the actuating element, so that moment unbalance generated by the movement of the actuating element is counteracted or compensated. Pressure cylinders are widely used in a variety of industrial and mechanical equipment such as presses, cranes, excavators, dozers, fork lift trucks, tractors, and the like. They are an essential element in hydraulic systems, which can improve the performance and stability of the equipment and ensure the safety and reliability of the production process.

The cylinder cover of the pressure cylinder is easy to damage mainly because the pressure born by the pressure cylinder is very high during working, and the piston rod of the pressure cylinder can generate great force when extending out, and the force can directly act on the cylinder cover, so that the cylinder cover is easy to damage if the design and the manufacture of the cylinder cover are unreasonable; in addition, the pressure cylinder can generate vibrations and shocks during operation, which can also cause damage to the cylinder head. If the pressure cylinder is used in a severe environment, such as too high or too low temperature, too high humidity, or acid and alkali, the cylinder head is damaged rapidly.

Therefore, in daily use, the cylinder cover is often maintained or replaced, but the fixing mode of the existing cylinder cover is mostly bolt fixing or welding fixing, and the disassembly and assembly are inconvenient.

Disclosure of Invention

The utility model provides a clamping tool for replacing a cylinder sleeve of a secondary pressure cylinder of a gearbox, which is convenient to assemble and disassemble and is convenient for fixing a cylinder cover, in order to overcome the defects of the prior art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the clamping tool comprises a fixed seat, a clamping cylinder is arranged on the fixed seat, a track hole is formed in the clamping cylinder, a plurality of clamping blocks are uniformly arranged in the track hole at intervals around the center of the track hole, the clamping blocks mutually surround each other to form a clamping space for accommodating the clamping cylinder sleeve, and a limiting piece for limiting the relative position between the clamping blocks is arranged between every two adjacent clamping blocks; the track hole is a taper hole with gradually smaller hole diameter in the direction of pointing to the cylinder cover, the outer wall of the clamping block is in butt contact with the wall of the taper hole, a telescopic piece is arranged on the fixing seat, the output end of the telescopic piece can push the clamping block to move towards the opening of the track hole along the wall of the track hole, and the clamping blocks are mutually close under the extrusion of the wall of the taper hole, so that the clamping space is contracted to clamp the cylinder sleeve.

Preferably, the clamping block comprises a guide block with one side attached to the wall of the track hole and an extrusion block with one side in extrusion contact with the cylinder sleeve, and the guide block and the extrusion block are detachably and fixedly connected through a threaded piece.

Preferably, the guide block is provided with a clamping groove, the extrusion block is fixedly connected with a clamping strip, and the clamping strip can be matched and clamped in the clamping groove.

Preferably, the guide block is provided with an internal thread table, the extrusion block is provided with a cover table, the extrusion block is provided with a counter bore, the cover table can be matched and covered on the internal thread table, and the thread piece is arranged in the counter bore in a penetrating manner, and the bottom of the thread piece is in threaded fit with the internal thread sleeve.

Preferably, the limiting grooves are formed in the two ends of the clamping blocks, the limiting pieces are installed in the limiting grooves, the limiting pieces are springs, and the two sections of the springs are respectively inserted into the limiting grooves of the adjacent clamping blocks and are fixed through bolts.

Preferably, a lapping table is arranged on the side wall of one end of the extrusion block, which is close to the opening of the track hole, and a lapping groove is formed in the guide block.

Preferably, the bolt is sleeved with a compressing block, the compressing block is positioned between the head of the bolt and the clamping block, and one end of the compressing block is propped against the lapping table.

Preferably, an abutting groove is formed in one end, deviating from the track groove, of the clamping block, and the end part of the output end of the telescopic piece is inserted into the abutting groove and abuts against the root part of the abutting groove.

Preferably, the track hole is a conical round hole.

Preferably, the clamping block is an arc-shaped block.

The utility model has the technical effects that: 1. when the cylinder sleeve is mounted on the fixed seat along with the auxiliary pressure cylinder, the telescopic part pushes the compression block to move towards the cylinder sleeve along the track hole, the hole diameter of the track hole gradually becomes smaller, the hole wall of the track hole extrudes the clamping block, and the clamping block extrudes and clamps the cylinder cover, so that the cylinder cover is quickly fixed, when the cylinder cover needs to be disassembled, the telescopic part is retracted, the auxiliary pressure cylinder can be directly taken out from the fixed seat, and the convenience of disassembling and fixing the cylinder cover is effectively improved. 2. Through the detachable structure's of clamp block setting, conveniently carry out quick maintenance to the damage position of clamp block and change, further guarantee the convenience of equipment maintenance, reduce the cost of equipment operation.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic cross-sectional view of the present utility model in elevation.

Fig. 3 is a schematic cross-sectional view of the present utility model.

Fig. 4 is a partial enlarged view at a in fig. 3.

Fig. 5 is an exploded view of the clamp block, fig. 1.

Fig. 6 is an exploded view of the clamp block 2.

Fig. 7 is a schematic structural view of the auxiliary cylinder.

The reference numerals of the main technical characteristics in the drawings are as follows: 1. a fixing seat; 11. a clamping cylinder; 12. a track hole; 2. a clamping block; 3. a clamping space; 21. a guide block; 211. a clamping groove; 212. an internal thread stand; 213. a lap joint groove; 22. extruding a block; 221. countersink; 222. a cover table; 223. an inner hexagon bolt; 224. a lapping table; 225. clamping strips; 41. a limit groove; 42. a spring; 43. a compaction block; 44. an abutment groove; 5. a telescoping member; 51. a push plate; 6. a sub-pressure cylinder; 61. and (5) a cylinder cover.

Detailed Description

The utility model is further illustrated by the following detailed description and the accompanying drawings.

As shown in fig. 1-7, a clamping tool for replacing a cylinder sleeve of a gearbox auxiliary pressure cylinder comprises a fixed seat 1, wherein a clamping cylinder 11 is arranged on the fixed seat 1, a track hole 12 is formed in the clamping cylinder 11, the track hole 12 is a conical round hole with a smaller opening than the root, a plurality of clamping blocks 2 are arranged in the track hole, the clamping blocks 2 surround the center of the track hole 12 at uniform intervals, the clamping blocks 2 mutually surround to form a clamping space 3 for accommodating a clamping cylinder sleeve 61, and a limiting piece for limiting the relative position between the clamping blocks 2 is arranged between adjacent clamping blocks 2.

Specifically, the clamping block 2 is a double-layer arc block, and comprises a guide block 21 and an extrusion block 22, wherein the outer arc surface of the guide block 21 is in contact with the track hole 12, and the inner arc surface of the guide block is provided with a clamping groove 211; a counter bore 221 is formed on the inner arc surface of the extrusion block 22, and a clamping strip is fixedly connected on the outer arc surface of the extrusion block, and can be matched and clamped in the clamping groove 211; the center of the clamping groove 211 is fixedly connected with an internal thread table 212, the center of the clamping bar 225 is fixedly connected with a cover table 222, the cover table 222 can be matched and covered on the internal thread table 212, an inner hexagon bolt 223 is arranged in the counter bore 221 in a penetrating mode, and the bottom of the inner hexagon bolt 223 penetrates out of the cover table 222 and is in threaded fit with the internal thread sleeve.

Further, a lapping platform 224 is disposed on a side wall of one end of the extrusion block 22 near the mouth of the track hole 12, a lapping groove 213 is disposed on the guide block 21, and the lapping platform 224 is lapped on the lapping groove 213 in a matching manner, so as to further limit the installation position for installing the relative installation between the guide block 21 and the extrusion block 22.

Further, the two ends of the guide block 21 are provided with limiting grooves 41, springs 42 are installed in the limiting grooves 41, and two sections of the springs 42 are respectively inserted into the limiting grooves 41 of the adjacent clamping blocks 2 and fixed by bolts so as to limit the gaps between the adjacent clamping blocks 2.

Further, the bolt is sleeved with a pressing block 43, the pressing block 43 is a bar-shaped block located between the head of the bolt and the clamping block 2, and one end of the bar-shaped block abuts against the lapping table 224 to further limit the separation of the pressing block 22 and the guiding block 21.

Further, the distance from the end of the pressing block 22 away from the mouth of the rail hole 12 to the mouth of the rail hole 12 is smaller than the distance from the end of the guide block 21 to the mouth of the rail hole 12, so that the abutment groove 44 is formed due to the height difference.

Specifically, the fixing base 1 is provided with a telescopic member 5, the telescopic member 5 is an oil cylinder, a telescopic section of the telescopic member is inserted into the track hole 12, and a push plate 51 is fixedly connected to the end of the telescopic section, and the push plate 51 abuts against a bottom of the abutting groove 44, that is, one side end of the extrusion block 22, so as to assist in limiting an abutting position of the push plate 51 and the clamping block 2 through the abutting groove 44.

When the cylinder sleeve is mounted on the fixing seat along with the auxiliary pressure cylinder 6, the output end of the telescopic piece 5 pushes the clamping block 2 to move towards the opening of the track hole 12 along the wall of the track hole 12, and the clamping blocks 2 are mutually close under the extrusion of the wall of the conical hole, so that the clamping space 3 is contracted to clamp the cylinder sleeve 61.

The above embodiments are merely examples of the present utility model, but the present utility model is not limited thereto, and the present utility model may be applied to similar products, and any person skilled in the art who is skilled in the field of the present utility model shall make changes or modifications within the scope of the present utility model.

Claims

1. The utility model provides a vice pressure cylinder liner of gearbox changes clamping tool which characterized in that: the clamping cylinder comprises a fixed seat (1), wherein a clamping cylinder (11) is arranged on the fixed seat (1), a track hole (12) is formed in the clamping cylinder (11), a plurality of clamping blocks (2) are arranged in the track hole (12), the clamping blocks (2) are uniformly arranged around the center of the track hole (12) at intervals, the clamping blocks (2) mutually surround to form a clamping space (3) for accommodating a clamping cylinder sleeve, and limiting pieces for limiting the relative positions between the clamping blocks (2) are arranged between adjacent clamping blocks (2); the track hole (12) is a taper hole with gradually reduced hole diameter in the direction pointing to the cylinder cover, the outer wall of the clamping block (2) is in butt contact with the wall of the taper hole, the telescopic piece (5) is installed on the fixing seat (1), the output end of the telescopic piece (5) can push the clamping block (2) to move towards the opening of the track hole (12) along the wall of the track hole (12), and the clamping block (2) can be mutually close under the extrusion of the wall of the taper hole, so that the clamping space (3) is contracted to clamp the cylinder sleeve.

2. The gearbox auxiliary pressure cylinder liner replacement clamping tool of claim 1, wherein: the clamping block (2) comprises a guide block (21) with one side attached to the wall of the track hole (12) and an extrusion block (22) with one side in extrusion contact with the cylinder sleeve, and the guide block (21) and the extrusion block (22) are detachably and fixedly connected through screw members.

3. A gearbox auxiliary pressure cylinder liner replacement clamping tool as claimed in claim 2, wherein: the guide block (21) is provided with a clamping groove (211), the extrusion block (22) is fixedly connected with a clamping strip, and the clamping strip can be matched and clamped in the clamping groove (211).

4. A gearbox auxiliary pressure cylinder liner replacement clamping tool according to claim 3, wherein: the guide block (21) is provided with an internal thread table (212), the extrusion block (22) is provided with a cover table (222) and a counter bore (221) is formed in the extrusion block, the cover table (222) can be matched and covered on the internal thread table (212), and the threaded piece is arranged in the counter bore (221) in a penetrating mode, and the bottom of the threaded piece is matched with the internal thread sleeve in a threaded mode.

5. The gearbox auxiliary pressure cylinder liner replacement clamping tool of claim 4, wherein: limiting grooves (41) are formed in the two ends of the clamping blocks (2), limiting pieces are arranged in the limiting grooves (41), the limiting pieces are springs (42), and two sections of the springs (42) are respectively inserted into the limiting grooves (41) of the adjacent clamping blocks (2) and are fixed through bolts.

6. The gearbox auxiliary pressure cylinder liner replacement clamping tool of claim 5, wherein: the extrusion block (22) is provided with a lap joint table (224) on the side wall of one end close to the opening of the track hole (12), the guide block (21) is provided with a lap joint groove (213), and the lap joint table (224) is in fit lap joint with the lap joint groove (213).

7. The gearbox auxiliary pressure cylinder liner replacement clamping tool of claim 6, wherein: the bolt is sleeved with a compression block (43), the compression block (43) is positioned between the head of the bolt and the clamping block (2), and one end of the compression block is propped against the lap joint table (224).

8. The gearbox auxiliary pressure cylinder liner replacement clamping tool of claim 1, wherein: an abutting groove (44) is formed in one end, deviating from the track groove, of the clamping block (2), and the end part of the output end of the telescopic piece (5) is inserted into the abutting groove (44) and abuts against the root of the abutting groove (44).

9. The gearbox auxiliary pressure cylinder liner replacement clamping tool of claim 1, wherein: the track hole (12) is a conical round hole.

10. The gearbox auxiliary pressure cylinder liner replacement clamping tool of claim 1, wherein: the clamping block (2) is an arc-shaped block.