Hydraulic fracturing wand

Abstract

The present application relates to rock mining technical field, provide a kind of hydraulic splitting rod, including rod shell, the rod shell is made of two identical first shell and second shell splicing, and the inner wall top and bottom of first shell and second shell are respectively attached with upper pad and lower pad, upper pad, vertically distributed cylinder is provided between the upper pad and lower pad at equal distance, and adjacent two cylinder are attached, the outer diameter of cylinder is consistent with the inner diameter of rod shell, the inside intermediate position of the cylinder is provided with central cavity.In the present application, the entire hydraulic splitting rod has the function of easy disassembly, so that the splitting head assembly inside the splitting rod exists in a separate structure. When a splitting head assembly is damaged, it is easy to disassemble and repair, ensuring that the entire splitting rod can be used continuously and achieve the performance of continuous use. There is no need to fill hydraulic oil into the entire splitting rod to provide power, and there is no need to ensure the sealing performance of the entire oil pipeline.

Description

Technical Field

[0001] This invention belongs to the field of rock mining technology, and particularly relates to a hydraulic rock splitter. Background Technology

[0002] Hydraulic rock splitters, also known as rock splitters, consist of two main parts: a hydraulic pump and a rock splitter (rod). The working principle of a rock splitter is based on its ability to release enormous splitting tension, generating immense energy comparable to methods like tunnel boring machines and emulsion explosive blasting. The high pressure generated by the hydraulic oil in the hydraulic pump station serves as the energy source, which is delivered through high-pressure oil pipes to the cylinders of each rock splitter (also known as the splitting head). This controls the extension and retraction of the piston rod within the rock splitter, causing the wedge blocks to expand outwards, generating a tensile force approaching 1000 tons. Since the rock's internal tensile strength is low, the rock splitter can easily split boulders within seconds, causing internal compression and further fracturing of the hard ore. Compared to cement-based methods, rock mining is too time-consuming, slow, and requires manual drilling, resulting in high workload but limited volume and the inability to reuse materials. Hydraulic rock splitters, on the other hand, offer fast rock mining speed, cost savings, and silent operation, producing no vibration, impact, noise, or dust during operation. Hydraulic rock splitters are suitable for breaking rocks over large areas. They are a current alternative to mechanized large-scale rock breaking tools. Using this method, the results are good, the speed is fast, and the cost is low.

[0003] A search revealed a splitting rod (patent publication number CN106150499B) comprising a rod shell, a sealed end cap, a connector assembly disposed on the sealed end cap, and a hydraulic system disposed within the rod shell for driving piston extension and retraction. The rod shell includes several hydraulic cylinders stacked end-to-end and several connecting parts. One end of each hydraulic cylinder has a boss, and the other end has a groove adapted to the shape of the boss. The boss of one hydraulic cylinder extends into the groove of the next hydraulic cylinder. The connecting parts have a connecting portion and a limiting portion. The connecting portion is threaded rod-shaped, and the limiting portion has a connecting blind hole, which is divided into a tightening hole at the head and a threaded hole at the tail. The connecting portion of the connecting part extends into the connecting blind hole of the next connecting part and is threadedly connected to the threaded hole. The purpose of this invention is to provide a splitting rod that can reduce usage costs.

[0004] Existing hydraulic splitting rods have the following shortcomings: Traditional hydraulic splitting rods are constructed as a single unit, and their splitting head components are not separate structures. When a splitting head component is damaged, disassembly is complex and repair is not effective, rendering that component unable to function properly. Secondly, the entire splitting rod is powered by hydraulic oil, requiring the entire oil pipeline to be sealed. When the seal is damaged, it cannot provide effective power. Therefore, there is an urgent need to design a hydraulic splitting rod to solve the above problems. Summary of the Invention

[0005] To address the technical issues that the splitting head assembly is not a separate structure, making repair difficult when one of the splitting head assemblies is damaged, and that the entire splitting bar is powered by hydraulic oil, it is necessary to ensure the sealing performance of the entire oil pipeline. When the sealing performance is damaged, it is also impossible to provide effective power.

[0006] The technical solution of this invention is implemented as follows:

[0007] A hydraulic splitting rod includes a rod shell, which is composed of two identical first and second shells joined together. Upper and lower pads are respectively attached to the top and bottom of the inner walls of the first and second shells. Cylinders are arranged at equal intervals and vertically distributed between the upper and lower pads, with adjacent cylinders fitting together. The outer diameter of the cylinder matches the inner diameter of the rod shell. A central cavity is formed in the middle of the cylinder, and inlet / outlet holes are formed between the bottom of the inner walls at both ends of the central cavity and the outer wall of the cylinder. End holes are equally distributed on both the first and second shells, with the positions of the end holes corresponding to the positions of the inlet / outlet holes. Hydraulic push blocks are attached to the inner walls of the inlet / outlet holes and inserted into the end holes. A pushing assembly is arranged between adjacent hydraulic push blocks and the interior of the central cavity.

[0008] A power assembly is provided on the top of the rod housing.

[0009] Furthermore, both the upper and lower pads are semi-circular, and a through hole is provided in the middle of both the upper and lower pads.

[0010] Furthermore, limit holes are provided on the top of both sides of the outer wall of the cylinder body, and limit posts are fixed at equal intervals on the inner wall of the first housing and the inner wall of the second housing, and the limit posts are inserted into the limit holes.

[0011] Furthermore, the inner walls of the end holes are all fitted with end caps, and the cross-sections of the end caps and the end holes are both L-shaped, with the end caps fitted onto the outer circumferential wall of the hydraulic jack.

[0012] Furthermore, each of the hydraulic top blocks has an installation groove at one end, and the inner wall of the installation groove is fixedly installed with a splitting block by screws. The splitting block is located inside the end cover, and the longitudinal section of the splitting block is an isosceles trapezoidal shape.

[0013] Furthermore, the inner walls of both ends of the central cavity are fixed with fixing seats, and a guide rod is fixed on one side of each fixing seat. Guide holes are opened at the middle positions of both sides of the other end of the hydraulic top block. The two ends of the guide rod are respectively inserted into the interior of the guide holes, and a third spring is fixed between the two ends of the guide rod and the inner wall of one end of the guide hole.

[0014] Furthermore, the pushing assembly includes guide holes located at the middle of the top and bottom of the cylinder body, and connecting grooves are provided at the middle of the other ends of two adjacent hydraulic top blocks. A push rod is rotatably connected to the inner wall of each connecting groove. Connecting seats are rotatably connected to both sides of one end of the push rod. One end of each of the four adjacent connecting seats is fixed with the same threaded rod. The top of the threaded rod passes through the interior of the guide hole located at the top. An internal threaded cylinder is fixed to the bottom end of the threaded rod, and the bottom of the outer wall of the internal threaded cylinder is attached to the inner wall of the guide hole located at the bottom. A second spring is fixedly installed between one side of the push rod and the bottom of the outer wall of the threaded rod, and the top of the outer wall of the threaded rod is screwed and adapted to the inner wall of the internal threaded cylinder.

[0015] Furthermore, an upper limit ring is fixed to the top of the outer wall of the internally threaded cylinder, and a lower limit ring is fixed to the middle of the bottom inner wall of the central cavity. The specifications of the upper limit ring and the lower limit ring are the same, and the outer diameter of the upper limit ring is smaller than the distance between the two guide rods.

[0016] Furthermore, the power assembly includes a hydraulic cylinder fitted to the middle of the top of the rod shell, and an oil pipe connector is fixed to the middle of the top of the hydraulic cylinder. Insertion holes are provided at the middle of the bottom of the hydraulic cylinder, the top of the first shell, and the top of the second shell. A push rod is inserted into the inner wall of the insertion hole. A push plate is fixed to the top of the push rod, and a sealing piston fitted to the inner wall of the hydraulic cylinder is fixed to the outer wall of the push plate. A first spring is fixed between the bottom of the push plate and the bottom inner wall of the hydraulic cylinder. The bottom of the push rod contacts the top of the threaded rod, and a docking slot is provided at the middle of the top of the threaded rod. A docking plate is fixed to the middle of the bottom of the push rod and inserted into the inner wall of the docking slot.

[0017] Furthermore, upper mounting seats are fixed to the bottom of both sides of the hydraulic cylinder, and the upper mounting seats are fixed to the first housing and the second housing by screws. A handle is fixed to the top of each of the two upper mounting seats, and a guide ring is fixed between one end of the handle. A lower mounting seat is fixed to the bottom of the first housing and the bottom of the second housing by screws.

[0018] The beneficial effects of this invention are:

[0019] 1. This hydraulic splitting rod consists of a cylinder body, a hydraulic top block, a splitting block, and a pushing component, forming a separate splitting head assembly structure. The upper and lower mounting seats, which are screwed onto the first and second housings, allow the outer shell of the rod to be separated from the cylinder body. The screw connection between the threaded rod and the internal threaded cylinder facilitates disassembly and assembly between the cylinder bodies, thus giving the entire hydraulic splitting rod a disassembly function. This allows the splitting head assembly inside the splitting rod to exist as an independent structure. When a splitting head assembly is damaged, it achieves the effect of easy disassembly and maintenance, ensuring that the entire splitting rod can continue to be used.

[0020] 2. The hydraulic splitting rod, through the action of the upper and lower pads, keeps the entire cylinder structure stable in the rod shell, and with the positioning action of the limiting post and limiting hole, fully maintains the stability of the cylinder structure and ensures the stability of the entire splitting rod.

[0021] 3. This hydraulic rock splitter connects to a hydraulic system via a power assembly located at the top of the outer shell. The hydraulic system supplies oil to the power assembly, which in turn pushes the push plate and the threaded rod in the push assembly downwards, pushing the hydraulic top block out from inside the end cap. This enables rock splitting and mining operations. The splitting block reduces the contact area with the rock, accelerating the splitting speed. After splitting is complete, the power assembly is depressurized, causing the hydraulic top block to reset under the action of the first, second, and third springs. This allows for continuous use without requiring the entire interior of the splitter to be filled with hydraulic oil for power, or ensuring the sealing performance of the entire oil pipeline, making it convenient to use. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of a hydraulic splitting rod.

[0025] Figure 2 This is a front cross-sectional view of a hydraulic splitting rod.

[0026] Figure 3 This is an exploded view of a hydraulic splitting rod.

[0027] Figure 4 This is a schematic diagram of the first shell and limiting post structure of a hydraulic splitting rod.

[0028] Figure 5 This is a schematic diagram of the power component structure of a hydraulic splitting bar.

[0029] Figure 6 This is a schematic diagram of the cylinder structure of a hydraulic splitting rod.

[0030] Figure 7 This is a cross-sectional view of the cylinder of a hydraulic splitting rod.

[0031] Figure 8This is a schematic diagram of the inlet / outlet holes and guide rod structure of a hydraulic splitting rod.

[0032] Figure 9 This is a schematic diagram of the pushing component structure of a hydraulic splitting bar.

[0033] Figure label:

[0034] 1. Rod housing; 101. First housing; 102. Second housing; 2. Upper mounting base; 3. Power assembly; 301. Hydraulic cylinder; 302. Oil pipe connector; 303. Sealing piston; 304. Push plate; 305. First spring; 306. Push rod; 307. Connecting plate; 4. Handle lever; 5. Guide ring; 6. End cap; 7. Hydraulic top block; 8. Splitting block; 9. Upper pad block; 10. Cylinder body; 11. Limiting post; 12. Lower pad block; 13. Lower mounting base; 14. Push... Moving component; 1401, guide hole; 1402, threaded rod; 1403, internal threaded cylinder; 1404, connecting seat; 1405, push rod; 1406, second spring; 1407, connecting groove; 15, central cavity; 16, end hole; 17, insertion hole; 18, through hole; 19, limiting hole; 20, mating slot; 21, fixing seat; 22, upper limit ring; 23, lower limit ring; 24, inlet / outlet hole; 25, third spring; 26, guide rod; 27, guide hole; 28, mounting groove. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0036] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] Example 1

[0038] Reference Figures 1-9A hydraulic splitting rod includes a rod shell 1, which is composed of two identical first shells 101 and second shells 102 joined together. Upper pads 9 and lower pads 12 are respectively attached to the top and bottom of the inner walls of the first shells 101 and second shells 102. Cylinders 10 are arranged at equal intervals and vertically distributed between the upper pads 9 and lower pads 12, with adjacent cylinders 10 fitting together. The outer diameter of the cylinder 10 matches the inner diameter of the rod shell 1. A central cavity 15 is formed in the middle of the interior of each cylinder 10, and inlet / outlet holes 24 are formed between the bottom of the inner walls at both ends of the central cavity 15 and the outer wall of the cylinder 10. End holes 16 are equally distributed on both the first shell 101 and the second shell 102. The position corresponds to the position of the inlet / outlet hole 24. The inner wall of the inlet / outlet hole 24 is fitted with a hydraulic push block 7 inserted into the end hole 16. The inner wall of the end hole 16 is fitted with an end cap 6, and the cross-section of the end cap 6 and the cross-section of the end hole 16 are both L-shaped. The end cap 6 is fitted on the outer circumferential wall of the hydraulic push block 7. A push assembly 14 is provided between two adjacent hydraulic push blocks 7 and the interior of the central cavity 15. The push assembly 14 includes a guide hole 1401 opened at the middle position of the top and bottom of the cylinder body 10. A connecting groove 1407 is opened at the middle position of the other end of two adjacent hydraulic push blocks 7. A push rod 1405 is rotatably connected to the inner wall of the connecting groove 1407. A connecting seat 1404 is rotatably connected to both sides of one end of the push rod 1405. One end of each connecting seat 1404 is fixed with a threaded rod 1402. The top of the threaded rod 1402 passes through the interior of the guide hole 1401 located at the top. The bottom end of the threaded rod 1402 is fixed with an internal threaded cylinder 1403, and the bottom of the outer wall of the internal threaded cylinder 1403 is fitted against the inner wall of the guide hole 1401 located at the bottom. A second spring 1406 is fixedly installed between one side of the push rod 1405 and the bottom of the outer wall of the threaded rod 1402, and the top of the outer wall of the threaded rod 1402 is screwed and adapted to the inner wall of the internal threaded cylinder 1403. The inner walls of the other two ends of the central cavity 15 are fixed with fixing seats 21, and a guide rod 26 is fixed on one side of each fixing seat 21. Guide holes 27 are opened at the middle positions of both sides of the other end of the hydraulic push block 7. Both ends of guide rod 26 are inserted into the guide hole 27. A third spring 25 is fixed between both ends of guide rod 26 and the inner wall of one end of guide hole 27. The guiding action of guide rod 26 and guide hole 27 ensures the stability of hydraulic push block 7 within inlet / outlet hole 24. The third spring 25, in conjunction with the hydraulic push block 7, allows it to reset after movement. An upper limit ring 22 is fixed to the top of the outer wall of internal thread cylinder 1403, and a lower limit ring 23 is fixed to the middle of the bottom inner wall of central cavity 15. The specifications of upper limit ring 22 and lower limit ring 23 are the same. The outer diameter of upper limit ring 22 is smaller than the distance between the two guide rods 26. When a single internal splitting head assembly is damaged, the rod outer shell 1 can be detached from cylinder 10.The threaded connection between the threaded rod 1402 and the internal threaded cylinder 1403 facilitates easy assembly and disassembly of the cylinder body 10, giving the entire hydraulic splitting rod a convenient disassembly function.

[0039] A power assembly 3 is provided on the top of the rod housing 1. The power assembly 3 includes a hydraulic cylinder 301 attached to the middle of the top of the rod housing 1, and an oil pipe connector 302 is fixed at the middle of the top of the hydraulic cylinder 301. An insertion hole 17 is provided at the middle of the bottom of the hydraulic cylinder 301, the top of the first housing 101, and the top of the second housing 102. A push rod 306 is inserted into the inner wall of the insertion hole 17. A push plate 304 is fixed to the top of the push rod 306, and a sealing piston 303 attached to the inner wall of the hydraulic cylinder 301 is fixed to the outer wall of the push plate 304. The bottom of the push plate 304 is fixed to the inner wall of the bottom of the hydraulic cylinder 301. There is a first spring 305, the bottom of the push rod 306 contacts the top of the threaded rod 1402, and the top of the threaded rod 1402 is provided with a docking slot 20. The bottom of the push rod 306 is fixed with a docking plate 307 that is inserted into the inner wall of the docking slot 20. The oil pipe joint 302 on the power assembly 3 is connected to the hydraulic system. The hydraulic system supplies oil to the power assembly 3, which squeezes the sealing piston 303, the push plate 304 and the threaded rod 1402 in the push assembly 14 to move down, changing the inclination of the top rod 1405, thereby pushing the hydraulic top block 7 out from the inside of the end cover 6 to realize the rock splitting and mining operation.

[0040] In this invention, both the upper pad 9 and the lower pad 12 are semi-circular, and both the upper pad 9 and the lower pad 12 have through holes 18 in the middle. The upper pad 9 and the lower pad 12 fill the gaps between the cylinder body 10 and the top and bottom of the rod shell 1, thus ensuring the stability of the cylinder body 10.

[0041] In this invention, upper mounting seats 2 are fixed to the bottom of both sides of the hydraulic cylinder 301, and the upper mounting seats 2 are fixed to the first housing 101 and the second housing 102 by screws. A handle 4 is fixed to the top of each of the two upper mounting seats 2, and a guide ring 5 is fixed between one end of the handle 4. A lower mounting seat 13 is fixed to the bottom of the first housing 101 and the bottom of the second housing 102 by screws. The upper mounting seats 2 and the lower mounting seats 13 ensure the stability between the first housing 101 and the second housing 102, so that the entire splitting rod has the performance of easy disassembly and assembly.

[0042] Example 2

[0043] Reference Figure 2 , Figure 3 , Figure 4 and Figure 6Limiting holes 19 are provided on the top of both sides of the outer circumference of the cylinder body 10, and limiting posts 11 are fixed at equal intervals on the inner wall of the first housing 101 and the inner wall of the second housing 102. The limiting posts 11 are inserted into the limiting holes 19. When assembling the entire splitting rod, the limiting posts 11 on the first housing 101 and the second housing 102 are inserted into the limiting holes 19 on the cylinder body 10, ensuring that the multiple cylinder bodies 10 can be stably placed inside the rod shell 1, thus ensuring the stability of the entire splitting rod.

[0044] Example 3

[0045] Reference Figure 1 and Figure 9 Each end of the hydraulic jack 7 is provided with an installation groove 28, and the inner wall of the installation groove 28 is fixed with a splitting block 8 by screws. The splitting block 8 is located inside the end cover 6. The longitudinal section of the splitting block 8 is an isosceles trapezoid shape. By reducing the contact area between the entire splitting rod and the rock through the end face of the splitting block 8, the splitting speed at the splitting point is faster, and the work efficiency is improved.

[0046] The implementation principle of a hydraulic rock splitter in this embodiment is as follows: During use, the user connects the oil pipe connector 302 on the power assembly 3 to the hydraulic system, using the hydraulic system to supply oil to the power assembly 3. This causes the sealing piston 303, the push plate 304, and the threaded rod 1402 in the push assembly 14 to move downwards, changing the inclination of the push rod 1405. This pushes the hydraulic push block 7 out from inside the end cover 6, achieving rock splitting and mining operations. Furthermore, the end face of the splitting block 8 reduces the contact area with the rock, accelerating the splitting speed. After splitting is complete, the user depressurizes the power assembly 3. At this time, the first spring 305 and the second spring... Under the action of spring 1406 and third spring 25, the hydraulic top block 7 is reset, achieving continuous use. The user can form a separate splitting head assembly structure by using cylinder 10, hydraulic top block 7, splitting block 8, and pushing component 14. When the internal single splitting head assembly is damaged, the upper mounting seat 2 and lower mounting seat 13 can be installed on the first housing 101 and the second housing 102 by screws, so that the rod shell 1 can be separated from the cylinder 10. The screw connection between the threaded rod 1402 and the internal threaded cylinder 1403 makes it easy to disassemble and assemble the cylinder 10, so that the entire hydraulic splitting rod has a disassembly function.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydraulic splitting rod, comprising a rod shell (1), characterized in that, The rod shell (1) is composed of two identical first shells (101) and second shells (102) joined together. Upper pads (9) and lower pads (12) are respectively fitted to the top and bottom of the inner walls of the first shell (101) and second shell (102). Cylinders (10) are arranged at equal intervals and vertically distributed between the upper pads (9) and lower pads (12), with adjacent cylinders (10) fitting together. The outer diameter of the cylinder (10) matches the inner diameter of the rod shell (1). A central cavity (15) is formed in the middle of the interior of each cylinder (10). Both ends of the inner wall of the central cavity (15) are provided with inlet and outlet holes (24) between the bottom of the inner wall and the outer wall of the cylinder (10). The first housing (101) and the second housing (102) are provided with end holes (16) distributed at equal intervals. The position of the end holes (16) corresponds to the position of the inlet and outlet holes (24). The inner wall of the inlet and outlet holes (24) is fitted with hydraulic push blocks (7) inserted into the end holes (16). A push assembly (14) is provided between two adjacent hydraulic push blocks (7) and the interior of the central cavity (15). A power assembly (3) is provided on the top of the rod shell (1). The pushing assembly (14) includes guide holes (1401) at the middle of the top and bottom of the cylinder body (10), and connecting grooves (1407) are provided at the middle of the other ends of two adjacent hydraulic top blocks (7). A push rod (1405) is rotatably connected to the inner wall of each connecting groove (1407). Connecting seats (1404) are rotatably connected to both sides of one end of each push rod (1405). One end of each of the four adjacent connecting seats (1404) is fixed with the same threaded rod (1402). 02) The top of the threaded rod (1402) passes through the interior of the guide hole (1401) located at the top. The bottom end of the threaded rod (1402) is fixed with an internal threaded cylinder (1403), and the bottom of the outer wall of the internal threaded cylinder (1403) is attached to the inner wall of the guide hole (1401) located at the bottom. A second spring (1406) is fixedly installed between one side of the top rod (1405) and the bottom of the outer wall of the threaded rod (1402), and the top of the outer wall of the threaded rod (1402) is screwed and adapted to the inner wall of the internal threaded cylinder (1403). The power assembly (3) includes a hydraulic cylinder (301) fitted to the middle of the top of the rod shell (1), and an oil pipe connector (302) is fixed at the middle of the top of the hydraulic cylinder (301). Insertion holes (17) are provided at the middle of the bottom of the hydraulic cylinder (301), the top of the first shell (101), and the top of the second shell (102). A push rod (306) is inserted into the inner wall of the insertion hole (17). A push plate (304) is fixed to the top of the push rod (306), and the push plate (304)... The outer wall of the hydraulic cylinder (301) is fixed with a sealing piston (303) that fits against the inner wall of the hydraulic cylinder (301). A first spring (305) is fixed between the bottom of the push plate (304) and the bottom inner wall of the hydraulic cylinder (301). The bottom of the push rod (306) is in contact with the top of the threaded rod (1402), and a docking slot (20) is provided at the middle position of the top of the threaded rod (1402). A docking plate (307) is fixed at the middle position of the bottom of the push rod (306) and inserted into the inner wall of the docking slot (20).

2. A hydraulic splitting rod as described in claim 1, characterized in that, The upper pad (9) and the lower pad (12) are both set in a semi-circle, and a through hole (18) is opened in the middle position of the upper pad (9) and the lower pad (12).

3. A hydraulic splitting rod as described in claim 1, characterized in that, Limiting holes (19) are provided on the top of both sides of the outer circumference of the cylinder body (10), and the inner walls of the first housing (101) and the inner walls of the second housing (102) are fixed with equally spaced limiting posts (11), which are inserted into the limiting holes (19).

4. A hydraulic splitting rod as described in claim 1, characterized in that, The inner wall of the end hole (16) is fitted with an end cap (6), and the cross-section of the end cap (6) and the cross-section of the end hole (16) are both L-shaped. The end cap (6) is fitted on the outer circumferential wall of the hydraulic top block (7).

5. A hydraulic splitting rod as described in claim 1, characterized in that, One end of each hydraulic top block (7) is provided with an installation groove (28), and the inner wall of the installation groove (28) is fixedly installed with a splitting block (8) by screws. The splitting block (8) is located inside the end cover (6), and the longitudinal section of the splitting block (8) is an isosceles trapezoid shape.

6. A hydraulic splitting rod as described in claim 5, characterized in that, The inner walls of the other two ends of the central cavity (15) are fixed with a fixed seat (21), and a guide rod (26) is fixed on one side of the fixed seat (21). The middle positions of the two sides of the other end of the hydraulic top block (7) are provided with guide holes (27). The two ends of the guide rod (26) are respectively inserted into the inside of the guide hole (27). A third spring (25) is fixed between the two ends of the guide rod (26) and the inner wall of one end of the guide hole (27).

7. A hydraulic splitting rod as described in claim 1, characterized in that, The upper limit ring (22) is fixed at the top of the outer wall of the internal threaded cylinder (1403), and the lower limit ring (23) is fixed at the middle position of the bottom inner wall of the central cavity (15). The specifications of the upper limit ring (22) are the same as those of the lower limit ring (23), and the outer diameter of the upper limit ring (22) is smaller than the distance between the two guide rods (26).

8. A hydraulic splitting rod as described in claim 1, characterized in that, The hydraulic cylinder (301) has upper mounting seats (2) fixed on both sides of the bottom. The upper mounting seats (2) are fixed to the first housing (101) and the second housing (102) by screws. The top of the two upper mounting seats (2) is fixed with handles (4). A guide ring (5) is fixed between one end of the handles (4). The bottom of the first housing (101) and the bottom of the second housing (102) are fixed with lower mounting seats (13) by screws.

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