Hydraulic inner supporting and outer clamping module clamp

Abstract

The utility model discloses a hydraulic inner-supporting outer-clamping module clamp which comprises a public base, a plurality of outer clamping modules and a plurality of inner-supporting modules. A plurality of mounting holes are formed in the public base, a main body pull rod capable of moving up and down is arranged in each mounting hole, and a hydraulic driving module for driving the main body pull rods to move up and down is arranged in the public base. A plurality of mounting holes are formed in the public base, a plurality of outer clamping modules and a plurality of inner supporting modules are matched, the multi-station function is achieved, a plurality of workpieces can be clamped at a time, the machining operation efficiency is improved, meanwhile, the inner supporting modules and the outer clamping modules share the public base and can be converted into an inner supporting clamp or an outer circle clamping clamp according to needs, and the machining efficiency is improved. In the machining process, the clamp does not need to be integrally replaced, replacement is easier and more convenient, convenience is brought to production operation, and the clamp is light in overall weight, adopts hydraulic clamping, is low in cost and is worthy of application and popularization.

Description

Technical Field

[0001] The utility model relates to the field of clamp technology, in particular to a hydraulic inner-support and outer-clamp module clamp. Background Art

[0002] CNC is an automated machine tool controlled by a program and is a frequently used device in workpiece processing. When processing a workpiece with CNC, the workpiece must first be fixed to a fixture, and then the workpiece is quickly milled or turned using a rotating multi-blade tool. The most commonly used tool for fixing the workpiece is the lathe fixture.

[0003] Lathe fixtures are mainly divided into two categories: internal support fixtures and external circle clamping fixtures. The internal support fixture mainly uses the expansion mechanism to tighten the inner diameter of the workpiece, thereby fixing the workpiece, while the external circle clamping fixture mainly uses the clamping claws to clamp the outer circle of the workpiece, thereby fixing the workpiece.

[0004] In existing technology, internal support fixtures and external clamping fixtures cannot be used together or converted into each other. Operators must select either the internal support fixture or the external clamping fixture based on the structural characteristics of the workpiece. When CNC machining requires internal support and external clamping, the entire fixture must be frequently replaced, which is troublesome and inconvenient for production operations. Furthermore, current internal support fixtures and external clamping fixtures each have only one station, meaning they can only hold one workpiece, which is not conducive to improving machining efficiency. Therefore, it is necessary to develop a solution to the above problems. Utility Model Content

[0005] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a hydraulic internal support and external clamping module fixture, which can effectively solve the problem that the existing internal support fixture and external clamping fixture cannot be shared and can only clamp one workpiece.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A hydraulic internal support and external clamping module clamp comprises a common base, multiple external clamping modules and multiple internal support modules; the common base is provided with multiple mounting holes, each mounting hole is provided with a main pull rod that can move up and down, and a hydraulic drive module for driving the main pull rod to move up and down is provided in the common base; the multiple external clamping modules and the multiple internal support modules are respectively and replaceably installed in the corresponding mounting holes and connected to the corresponding main pull rods, and the hydraulic drive module drives the main pull rod to move up and down to promote the opening and closing of the corresponding external clamping module or the corresponding internal support module.

[0008] As a preferred solution, a plurality of fixed bases are provided on the common base, and the plurality of mounting holes are respectively located on the plurality of fixed bases. The upper end of the main pull rod and the lower end of the fixed base are directly opposite each other, and a guide sleeve is fixed to the lower end of the fixed base. The guide sleeve is fitted on the outside of the upper end of the main pull rod, and the main pull rod moves up and down along the guide sleeve. The structure is simple and easy to replace.

[0009] As a preferred solution, the external clamping module includes an external clamping positioning base, a clamping nozzle and a dust cover; the external clamping positioning base is detachably fixed on the fixed base, and guide holes are formed through the upper and lower ends of the external clamping positioning base, and the inner wall of the upper opening of the guide hole is formed with a first inclined surface; the clamping nozzle can be movably installed in the guide hole up and down, and the lower end of the clamping nozzle is detachably fixedly connected to the upper end of the main body pull rod, and the upper end of the clamping nozzle has a clamping hole with an opening facing upward, and a second inclined surface is formed on the outer wall of the upper end of the clamping nozzle, and the second inclined surface is abutted and spliced with the first inclined surface; the dust cover is fitted and fixed on the upper end of the external clamping positioning base, and a through hole is opened on the top of the dust cover, which is located above the clamping hole and is connected to the clamping hole directly, and has good stability.

[0010] As a preferred solution, a first screw hole is provided at the upper end of the main pull rod, and the clamping nozzle is an interchangeable universal clamping nozzle, and the lower end of the clamping nozzle is screwed and fixed to the first screw hole, with a simple structure and easy disassembly and assembly.

[0011] As a preferred embodiment, the internal support module includes an internal support positioning base, a reference plane substrate, an internal support expansion sleeve, a lower pull rod and a plurality of push rods; the upper and lower end surfaces of the internal support positioning base are formed with a through hole and a plurality of guide holes, the through hole is located in the center, and the plurality of guide holes are located on the periphery of the through hole, the internal support positioning base includes a base and a frustum protruding upward on the base, the base is detachably connected to the fixed base, the frustum has a third inclined surface; the reference plane substrate is fixed to the surface of the base; the internal support expansion sleeve can be movably fitted on the frustum up and down, the internal support expansion sleeve is composed of a plurality of expansion blocks, the plurality of expansion blocks are arranged at intervals in a circle, the inner side surface of each expansion block is a fourth inclined surface, and the fourth inclined surface is slidably matched with the third inclined surface; The lower pull rod can be movably arranged in the through hole up and down, and the lower end of the lower pull rod can be detachably fixedly connected to the upper end of the main pull rod, and the upper end of the lower pull rod prompts the inner support expansion sleeve to move downward; the multiple push rods can be movably arranged in the multiple guide holes up and down, and the multiple push rods are respectively located directly below the multiple expansion blocks, and the multiple push rods move upward to push the multiple expansion blocks to move upward; and the lower end sleeve of the lower pull rod is provided with a gasket, a guide sleeve and a first return spring, the gasket is located below the multiple push rods and prompts the multiple push rods to move upward, the guide sleeve prompts the gasket to move upward, the two ends of the first return spring respectively abut against the guide sleeve and the main pull rod, and the first return spring prompts the guide sleeve to move upward, the structure is simple, stable and reliable.

[0012] As a preferred solution, the upper end of the main pull rod is provided with a second screw hole, and the lower end of the lower pull rod is screwed and fixed to the second screw hole, which has a simple structure and is easy to assemble and disassemble.

[0013] As a preferred solution, the hydraulic drive module includes a cylinder and a balance rod. The cylinder is fixed in a common base, the middle part of the balance rod is hinged to the piston rod of the cylinder, and the two ends of the balance rod are respectively hinged to the lower ends of the two adjacent main pull rods.

[0014] As a preferred solution, the oil cylinder is a rear-thrust gas-liquid dual-purpose oil cylinder, which can provide sufficient thrust.

[0015] As a preferred solution, the common base has a receiving cavity, the oil cylinder is fixed to the inner top of the receiving cavity, and the balance rod is suspended in the receiving cavity.

[0016] As a preferred solution, two second return springs are provided on the inner bottom surface of the accommodating cavity for the balance rod. The two second return springs are respectively located below the two ends of the balance rod. The two second return springs prompt the balance rod to move upward and return to its original position. The structure is simple and the stability is good.

[0017] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0018] By providing multiple mounting holes on the common base and cooperating with multiple external clamping modules and multiple internal support modules, a multi-station function is realized, and multiple workpieces can be clamped at one time, which is beneficial to improving the efficiency of processing operations. At the same time, the internal support module and the external clamping module share a common base and can be converted into an internal support fixture or an external circle clamping fixture as needed. During processing operations, there is no need to replace the fixture as a whole, and replacement is easier, which brings convenience to production operations. In addition, this product is lightweight as a whole, adopts hydraulic clamping, and has a relatively low cost, making it worthy of promotion and use.

[0019] In order to more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an exploded perspective diagram of a preferred embodiment of the present utility model;

[0021] Figure 2 It is a three-dimensional enlarged schematic diagram of the common base in the preferred embodiment of the present utility model;

[0022] Figure 3 It is a cross-sectional schematic diagram of the common base in the preferred embodiment of the present utility model;

[0023] Figure 4This is a three-dimensional schematic diagram of the outer and inner clamps in the preferred embodiment of the present invention in use;

[0024] Figure 5 This is a cross-sectional schematic diagram of the preferred embodiment of the present utility model in the state of use of the inner and outer clamps;

[0025] Figure 6 This is a three-dimensional schematic diagram of the inner support in use in a preferred embodiment of the present invention;

[0026] Figure 7 This is a cross-sectional schematic diagram of the preferred embodiment of the present invention showing the inner support in use;

[0027] Figure 8 This is a schematic 3D diagram of the assembly of the outer clamping module in a preferred embodiment of the present invention;

[0028] Figure 9 This is an exploded schematic diagram of the outer clamping module in a preferred embodiment of the present utility model;

[0029] Figure 10 This is a schematic three-dimensional diagram of the assembly of the inner support module in a preferred embodiment of the present invention;

[0030] Figure 11 It is an exploded schematic diagram of the inner support module in the preferred embodiment of the present utility model.

[0031] Description of the accompanying drawings:

[0032] 10. Common base 11. Fixture base

[0033] 12. Pallet 13. Support plate

[0034] 14. Fixed base 15. Guide sleeve

[0035] 16. Handle 17. Gas and oil circuit assembly block

[0036] 101, mounting hole 102, accommodating cavity

[0037] 20. External clamping module 21. External clamping positioning base

[0038] 211, first inclined surface 22, clamping nozzle

[0039] 221, second inclined surface 23, dust cover

[0040] 201, guide hole 202, clamping hole

[0041] 203, through hole 30, internal support module

[0042] 31. Internal support positioning base 311. Base

[0043] 312, frustum 32, reference plane substrate

[0044] 33. Internal support sleeve 331. Expansion block

[0045] 34. Pull-down rod 35. Push rod

[0046] 36. Gasket 37. Guide braces

[0047] 38. First return spring 301, through hole

[0048] 302, guide hole 303, third inclined surface

[0049] 304, fourth inclined surface 40, main body pull rod

[0050] 41. First screw hole 42. Second screw hole

[0051] 50. Hydraulic drive module 51. Cylinder

[0052] 52. Balance bar 53. Second return spring

[0053] 501. Piston rod. DETAILED DESCRIPTION

[0054] Please refer to Figures 1 to 11 As shown, it shows the specific structure of a preferred embodiment of the present utility model, including a common base 10, a plurality of outer clamping modules 20 and a plurality of inner support modules 30.

[0055] The common base 10 is provided with a plurality of mounting holes 101, and each mounting hole 101 is provided with a main pull rod 40 that can move up and down. In the present embodiment, the common base 10 has a receiving cavity 102 therein. Specifically, the common base 10 includes a fixture base plate 11, a support plate 12 and a plurality of support plates 13. The support plate 12 is located below the fixture base plate 11, and the plurality of support plates 13 are connected between the base plate 11 and the support plate 12 to enclose and form the aforementioned receiving cavity 102. In addition, the common base 10 is provided with a plurality of fixed bases 14, and the plurality of mounting holes 101 are respectively located on the plurality of fixed bases 14, and the plurality of fixed bases 14 are evenly spaced and fixed on the fixture base plate 11. In the present embodiment, there are four fixed bases 14, but this is not limited thereto. The upper end of the main pull rod 40 and the lower end of the fixed base 14 are vertically opposite to each other. A guide sleeve 15 is fixed to the lower end of the fixed base 14. The guide sleeve 15 is fitted onto the outside of the upper end of the main pull rod 40, and the main pull rod 40 moves up and down along the guide sleeve 15. A first screw hole 41 is provided at the upper end of the main pull rod 40, and a second screw hole 42 is provided at the upper end of the main pull rod 40. The second screw hole 42 is formed concavely on the bottom surface of the first screw hole 41, and the inner diameter of the second screw hole 42 is smaller than the inner diameter of the first screw hole 41. In addition, handles 16 are provided at both ends of the common base 10 for easy transportation, and an air and oil circuit assembly block 17 is provided on the side of the common base 10 for connecting external air and oil circuits.

[0056] The common base 10 is provided with a hydraulic drive module 50 that drives the main pull rod 40 up and down. The multiple outer clamping modules 20 and the multiple inner support modules 30 are each removably mounted in corresponding mounting holes 101 and connected to the corresponding main pull rod 40. The hydraulic drive module 50 drives the main pull rod 40 up and down, thereby causing the corresponding outer clamping module 20 or corresponding inner support module 30 to open and close. Specifically:

[0057] There are four outer clamping modules 20, each of which includes an outer clamping positioning base 21, a clamping nozzle 22 and a dust cover 23; the outer clamping positioning base 21 is detachably fixed to the fixed base 14, and a guide hole 201 is formed through the upper and lower ends of the outer clamping positioning base 21, and the inner wall of the upper end opening of the guide hole 201 is formed with a first inclined surface 211; the clamping nozzle 22 is movably installed in the guide hole 201, and the lower end of the clamping nozzle 22 is detachable. The outer clamping base 21 is fixedly connected to the upper end of the main pull rod 40. The upper end of the clamping nozzle 22 has a clamping hole 202 with an upward opening. The outer wall of the upper end of the clamping nozzle 22 is formed with a second inclined surface 221, which abuts and mates with the first inclined surface 211. The dust cover 23 is fixedly mounted on the upper end of the outer clamping positioning base 21. The top of the dust cover 23 has a through hole 203, which is located above and directly connected to the clamping hole 202. In this embodiment, the clamping nozzle 22 is a universal clamping nozzle. The lower end of the clamping nozzle 22 is screwed into the first screw hole 41, making it easy to assemble and disassemble.

[0058] There are four inner support modules 30, each of which includes an inner support positioning base 31, a reference surface substrate 32, an inner support expansion sleeve 33, a lower pull rod 34 and a plurality of push rods 35; the upper and lower end surfaces of the inner support positioning base 31 are penetrated by a through hole 301 and a plurality of guide holes 302, the through hole 301 is located in the center, and the plurality of guide holes 302 are located on the periphery of the through hole 301, the inner support positioning base 31 includes a base 311 and a base 311 on the base 311. The frustum 312 protrudes upward, and the base 311 is detachably fixed to the fixed base 14. The frustum 312 has a third inclined surface 303. The reference plane substrate 32 is fixed to the surface of the base 311. The inner support sleeve 33 can be movably fitted on the frustum 312 up and down. The inner support sleeve 33 is composed of a plurality of expansion blocks 331. The plurality of expansion blocks 331 are arranged at intervals around the circumference. The inner side surface of each expansion block 331 is a fourth inclined surface 304. The fourth inclined surface 304 is aligned with the third inclined surface 303. The inclined surface 303 is slidably engaged; the lower pull rod 34 is movably arranged in the through hole 301, and the lower end of the lower pull rod 34 is detachably fixedly connected to the upper end of the main pull rod 40. The upper end of the lower pull rod 34 causes the inner support sleeve 33 to move downward, thereby causing the multiple expansion blocks 331 to expand radially outward; the multiple push rods 35 are respectively movably arranged in the multiple guide holes 302, and the multiple push rods 35 are respectively located directly below the multiple expansion blocks 331. 5 upward movement, respectively, pushing the multiple expansion blocks 331 upward. Furthermore, the lower end of the lower pull rod 34 is sleeved with a washer 36, a guide sleeve 37, and a first return spring 38. The washer 36 is located below the multiple push rods 35 and promotes the upward movement of the multiple push rods 35. The guide sleeve 37 promotes the upward movement of the washer 36. The two ends of the first return spring 38 respectively abut against the guide sleeve 37 and the main pull rod 40, forcing the guide sleeve 37 upward. Furthermore, in this embodiment, the lower end of the lower pull rod 34 is threadedly connected to the second screw hole 42, facilitating easy assembly and disassembly.

[0059] There are two hydraulic drive modules 50, each comprising a cylinder 51 and a balance bar 52. The cylinder 51 is fixed within the common base 10. The middle portion of the balance bar 52 is hingedly connected to the piston rod 501 of the cylinder 51, and the ends of the balance bar 52 are respectively hingedly connected to the lower ends of the two adjacent main pull rods 40. In this embodiment, the cylinder 51 is a dual-purpose gas-liquid push cylinder. The cylinder 51 is fixed to the inner top of the accommodating chamber 102, and the balance bar 52 is suspended within the accommodating chamber 102. Furthermore, two second return springs 53 are provided on the inner bottom surface of the accommodating chamber 102 for the balance bar 52. The two second return springs 53 are respectively located below the two ends of the balance bar 52. The two second return springs 53 urge the balance bar 52 to move upward and reset, resulting in a simple structure and good stability.

[0060] The working principle of this embodiment is described in detail as follows:

[0061] like Figure 4 and Figure 5 As shown, when multiple external clamping modules 20 are combined with the common base 10, a hydraulic four-station external clamping fixture can be formed, which can clamp the outer diameter of four workpieces at the same time. Specifically, first, the fixed end of the workpiece is inserted into the clamping hole 202 through the through hole 203. Then, the oil cylinder 51 is operated. The oil cylinder 51 drives the balance rod 52 to move downward. Then, the balance rod 52 drives the main pull rod 40 to move downward, so that the main pull rod 40 pulls the clamping nozzle 22 downward. Under the action of the first inclined surface 211 of the external clamp positioning base 21, the clamping hole 202 of the clamping nozzle 22 becomes smaller, thereby clamping the outer diameter of the fixed end of the workpiece. When the diameter of the workpiece is different, the clamping nozzle 22 of the corresponding diameter can be replaced. The clamping nozzle 22 and the main pull rod 40 are connected by internal and external teeth, and the guide sleeve 15 is used to reset the clamping nozzle 22 so that the clamping nozzle 22 can be quickly replaced and directly carried out. Furthermore, the center positioning of the outer clamping module 20 and the fixed base 14 of the common base 10 is achieved by fitting the inner taper of the fixed base 14 with the outer taper of the outer clamping positioning base 21 to form a self-centering, and is fixed and locked by screws (not shown).

[0062] like Figure 7 and Figure 8 As shown, when multiple inner support modules 30 are combined with the common base 10, a hydraulic four-station inner support fixture can be formed, which can support the inner diameter of four workpieces at the same time. Specifically, first, the workpiece is sleeved on the outer upper end of the inner support module 30, and then the oil cylinder 51 is put into positive action. The oil cylinder 51 works and drives the balance rod 52 to move downward. Then, the balance rod 52 drives the main pull rod 40 to move downward, so that the main pull rod 40 pulls the lower pull rod 34 downward. The lower pull rod 34 moves downward and presses the inner support expansion sleeve 33 to move downward. When the fourth inclined surface 304 of each expansion block 33 of the inner support expansion sleeve 33 and the third inclined surface 304 of the inner support positioning base 31 are aligned, the inner support expansion sleeve 33 is pressed downward. 03, the inner diameter of the inner support sleeve 33 expands and becomes larger, thereby tightening the workpiece to continue to move downward, and the bottom end face of the workpiece will fit with the end face of the reference surface substrate 32, thereby achieving the effect of tightening the bottom end face as the reference inner hole. When the cylinder 51 works in reaction, the balance rod 52 moves upward and drives the main pull rod 40 to move upward, thereby relaxing the first reset spring 38. Under the reaction force of the first reset spring 38, the guide sleeve 37 drives the gasket 36 to move upward, and the gasket 36 pushes the push rod 35 upward. Under the action of the push rod 35, the inner support sleeve 33 is pushed to reset upward, thereby realizing material removal, so that the workpiece can be easily taken out.

[0063] The design focus of the present invention is that by arranging multiple mounting holes on a common base, and cooperating with multiple external clamping modules and multiple internal support modules, a multi-station function is realized, and multiple workpieces can be clamped at one time, which is beneficial to improving the efficiency of processing operations. At the same time, the internal support module and the external clamping module share a common base and can be converted into an internal support clamp or an external circle clamp as needed. During processing operations, there is no need to replace the clamp as a whole, and replacement is simpler, which brings convenience to production operations. In addition, the overall weight of this product is light, it adopts hydraulic clamping, and the cost is relatively low, so it is worthy of promotion and use.

[0064] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A hydraulic internal support and external clamping module fixture, characterized by: The utility model comprises a common base, a plurality of outer clamping modules and a plurality of inner supporting modules; a plurality of mounting holes are provided on the common base, a main pull rod which can move up and down is provided in each mounting hole, and a hydraulic drive module which drives the main pull rod to move up and down is provided in the common base; the plurality of outer clamping modules and the plurality of inner supporting modules are respectively and replaceably installed in the corresponding mounting holes and connected to the corresponding main pull rods, and the hydraulic drive module drives the main pull rod to move up and down to prompt the corresponding outer clamping module or the corresponding inner supporting module to open and close; a plurality of fixed bases are provided on the common base, and the plurality of mounting holes are respectively located on the plurality of fixed bases, and the upper end of the main pull rod and the lower end of the fixed base are vertically opposite to each other, and a guide sleeve is fixed to the lower end of the fixed base. It is sleeved on the outside of the upper end of the main pull rod, and the main pull rod moves up and down along the guide sleeve; the outer clamp module includes an outer clamp positioning base, a clamping nozzle and a dust cover; the outer clamp positioning base is detachably fixed on the fixed base, and the upper and lower ends of the outer clamp positioning base are penetrated to form a guide hole, and the inner wall of the upper end opening of the guide hole is formed with a first inclined surface; the clamping nozzle can be movably installed in the guide hole up and down, and the lower end of the clamping nozzle is detachably fixedly connected to the upper end of the main pull rod, and the upper end of the clamping nozzle has a clamping hole with an opening facing upward, and the outer wall of the upper end of the clamping nozzle is formed with a second inclined surface, and the second inclined surface is abutted and spliced with the first inclined surface; the dust cover is sleeved and fixed on the upper end of the outer clamp positioning base, and a through hole is provided on the top of the dust cover, which is located above the clamping hole and is connected directly with the clamping hole.

2. The hydraulic inner support and outer clamp module fixture according to claim 1, characterized in that: The upper end of the main body pull rod is provided with a first screw hole, the clamping nozzle is an interchangeable universal clamping nozzle, and the lower end of the clamping nozzle is screwed and fixed to the first screw hole.

3. The hydraulic inner-support and outer-clamp module fixture according to claim 1, characterized in that: The inner support module includes an inner support positioning base, a reference plane substrate, an inner support expansion sleeve, a lower pull rod and multiple push rods; the upper and lower end surfaces of the inner support positioning base are formed with a through hole and multiple guide holes, the through hole is located in the center position, and the multiple guide holes are located on the periphery of the through hole, the inner support positioning base includes a base and a frustum protruding upward on the base, the base is detachably connected to the fixed base, and the frustum has a third inclined surface; the reference plane substrate is fixed to the surface of the base; the inner support expansion sleeve can be movably fitted on the frustum up and down, and the inner support expansion sleeve is composed of multiple expansion blocks, and the multiple expansion blocks are arranged at intervals in a circle, and the inner side surface of each expansion block is a fourth inclined surface, and the fourth inclined surface slides with the third inclined surface; The lower pull rod can be movably inserted into the through hole up and down, and the lower end of the lower pull rod can be detachably fixedly connected to the upper end of the main pull rod, and the upper end of the lower pull rod prompts the inner support expansion sleeve to move downward; the multiple push rods can be movably arranged in the multiple guide holes up and down, and the multiple push rods are respectively located directly below the multiple expansion blocks, and the multiple push rods move upward to push the multiple expansion blocks to move upward; and the lower end sleeve of the lower pull rod is provided with a gasket, a guide sleeve and a first return spring, the gasket is located below the multiple push rods and prompts the multiple push rods to move upward, the guide sleeve prompts the gasket to move upward, and the two ends of the first return spring respectively abut against the guide sleeve and the main pull rod, and the first return spring prompts the guide sleeve to move upward.

4. The hydraulic inner-support and outer-clamp module fixture according to claim 3, characterized in that: The upper end of the main pull rod is provided with a second screw hole, and the lower end of the lower pull rod is screwed and fixed to the second screw hole.

5. The hydraulic inner-support and outer-clamp module fixture according to claim 1, characterized in that: The hydraulic drive module includes an oil cylinder and a balance rod. The oil cylinder is fixed in a common base. The middle part of the balance rod is hinged to the piston rod of the oil cylinder. The two ends of the balance rod are respectively hinged to the lower ends of the two adjacent main pull rods.

6. The hydraulic inner-support and outer-clamp module fixture according to claim 5, characterized in that: The oil cylinder is a dual-purpose oil cylinder for backward push and gas and liquid.

7. The hydraulic inner-support and outer-clamp module fixture according to claim 5, characterized in that: The public base is provided with a receiving cavity, the oil cylinder is fixed to the inner top of the receiving cavity, and the balancing rod is suspended in the receiving cavity.

8. The hydraulic inner-support and outer-clamp module fixture according to claim 7, characterized in that: Two second return springs are provided on the inner bottom surface of the accommodating cavity of the balance bar. The two second return springs are respectively located below the two ends of the balance bar. The two second return springs force the balance bar to move upward and return to its original position.

Images