A hydraulic bolt tensioner for large equipment
By designing a bolt hydraulic stretcher for large equipment, using structures such as plug rods, rotating rods and stress blocks to achieve rapid replacement of screw connections and protection of hydraulic connection pipes, the problems of difficulty in replacing screw connections and vulnerability of hydraulic connection pipes in the prior art are solved, and the efficiency and durability of the equipment are improved.
Patent Information
- Application Number
- CN202411962873.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2044-12-30
AI Technical Summary
Existing bolt hydraulic stretchers need to replace different screws when facing different screws, which makes it difficult to store multiple sets of screws, and the hydraulic connection pipe is exposed to the outside and is easily damaged.
A bolt hydraulic stretcher for large equipment is designed. The rotating rod can be rotated by inserting into the plug-in pipe through the plug-in pipe, so that the suitable screw pipe can be replaced quickly, and the protection of the hydraulic connecting pipe is achieved through the cooperation of the stress block, the rotating ring and the arc-shaped rod.
It realizes rapid replacement of screw connections and effective protection of hydraulic connection pipes, improving the efficiency and durability of the equipment.
Smart Images
Figure CN119388365B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of hydraulic bolt tensioners, in particular to a hydraulic bolt tensioner for large equipment. Background Art
[0002] Bolt tensioner is the abbreviation of bolt hydraulic tensioner, hydraulic tensioner. It uses the hydraulic source provided by the hydraulic booster pump (ultra-high pressure hydraulic pump) to determine the tension according to the tensile strength, yield coefficient and elongation of the material. The tension generated by the ultra-high pressure oil pump is used to stretch the bolts to which force is applied in their elastic deformation zone, and the bolt diameter is slightly deformed, so that the nut is easy to loosen. In addition, it can also be used as a device for applying axial force to hydraulic interference connection for top pressure installation. The biggest advantage of the tensioner is that it can tighten and remove multiple bolts at a fixed value at the same time, and the force is evenly distributed. It is a safe, efficient and fast tool and the best way to tighten and remove bolts of various specifications;
[0003] In the prior art, patent CN111408931B includes a support ring, a bolt, and a first nut. The first nut is threadedly sleeved on the bolt, and the first nut is threadedly sleeved. The top of the support ring is fixedly sleeved with a cylinder, and the cylinder is movably sleeved with a piston. The top of the piston is fixedly connected to the top ring, and the top of the top ring extends outside the top of the cylinder. The bottom of the side of the cylinder is fixedly sleeved with a cylinder, and the cylinder is connected to the annular cylinder. The hydraulic bolt tensioner, through the structural design of six limiting wedge blocks and pull rods in the pull ring sleeve, utilizes the force transmission of the limiting wedge blocks and the pull rod to facilitate the upward stretching of the bolt at the second nut, thereby reducing the length of the stretched bolt, so that the stretched portion of the bolt at the first nut is sufficiently large, and the effective utilization rate of the stretched bolt is improved, thereby improving work efficiency;
[0004] However, a bolt tensioner with a display screen on the surface can display the number of bolt tensioner constructions, the pressure during construction, and the leakage detection of hydraulic equipment. The existing bolt tensioner has a screw tube matching the screw rod on the top. When encountering different screw rods, different matching screw tubes need to be replaced. Multiple sets of screw tubes are not easy to store, and the hydraulic connecting pipe is exposed to the outside and is easily damaged. Summary of the invention
[0005] The purpose of the present invention is to provide a hydraulic bolt tensioner for large equipment to solve the problems raised in the above background technology.
[0006] To achieve the above object, the present invention provides the following technical solution: a hydraulic bolt tensioner for large equipment, comprising:
[0007] A sleeve pipe, a plug rod is arranged on the top of the sleeve pipe, and a first screw rod is arranged on the bottom of the sleeve pipe;
[0008] A lifting ring is arranged on the top of the sleeve pipe, a force-bearing block is arranged on the surface of the sleeve pipe, a plug-in tube is arranged on the top of the force-bearing block, a hydraulic connecting pipe is arranged on the surface of the sleeve pipe, a protective cover is arranged at the bottom of the hydraulic connecting pipe, an arc-shaped rod is arranged at the bottom of the protective cover; and an extension rod, a first hoop is arranged at the end of the extension rod, and a force-bearing ring is arranged inside the first hoop.
[0009] Preferably, a nut is threaded on the surface of the first screw rod, a rubber ring is provided on the surface of the plug-in rod, and the rubber ring is provided in multiple groups. A rotating rod is inserted at the top of the plug-in rod, and the rotating rod can rotate inside the plug-in rod. An extension rod is fixed on the surface of the rotating rod, and the extension rod is provided in multiple groups. The extension rod rotates with the rotating rod, and an air pipe is fixed to the top of the rotating rod. A second screw is threaded on the top of the air pipe, and the second screw can rotate at the top of the air pipe.
[0010] Preferably, a first ring groove is provided on the surface of the stress ring, a threaded tube is fixed to the bottom of the stress ring, the threaded tube is inserted into the interior of the sleeve tube, the stress ring is located at the top of the lifting ring, the hydraulic connecting pipe is connected to the hydraulic equipment, the lifting ring can be lifted and moved at the top of the sleeve tube, and after the lifting ring rises, it is supported on the bottom of the stress ring, so that the stress ring and the threaded tube are lifted.
[0011] Preferably, a second annular groove is provided on the surface of the sleeve tube, and an arc-shaped plate is arranged in the second annular groove. The arc-shaped plate can move in the second annular groove, and a cross bar is fixed to the end of the arc-shaped plate, and the cross bar moves with the arc-shaped plate, and a plug-in tube is fixed to the end of the cross bar, and a force-bearing block is plugged into the bottom of the plug-in tube, and the force-bearing block can be raised and lowered inside the plug-in tube, and a connecting plate is fixed on the surface of the force-bearing block, and the connecting plate is raised and lowered and moved with the force-bearing block, and a rotating ring is fixed to the end of the connecting plate.
[0012] Preferably, a third annular groove is provided on the surface of the sleeve tube, and a screwing ring is provided at the bottom of the sleeve tube. The screwing ring can rotate inside the sleeve tube, and the screwing ring is sleeved on the surface of the nut, and the rotation of the screwing ring can drive the nut to rotate, and a socket is provided on the surface of the screwing ring.
[0013] Preferably, the rotating ring is located in the third ring groove, and the rotating ring can be raised and lowered on the surface of the third ring groove. A fixed ring is fixed on the surface of the third ring groove, and a sleeve ring is provided on the outside of the fixed ring. The sleeve ring can rotate on the outside of the fixed ring. A spring is provided on the surface of the sleeve ring, and the spring is connected to the bottom of the rotating ring. The spring has a thrust on the rotating ring, so that the rotating ring moves away from the surface of the sleeve ring. A clamping block is provided on the surface of the rotating ring, and the clamping block can move on the surface of the rotating ring. The surface of the clamping block is connected to an arc rod, and the arc rod moves with the clamping block.
[0014] Preferably, an elastic rope is provided inside the first hoop, a hollow groove is provided inside the elastic rope, the end of the hollow groove is connected to the second hoop, the second hoop is inserted in the elastic rope, and the second hoop can move in the elastic rope, an insertion hole is provided at the end of the first hoop, and the second hoop can be inserted into the insertion hole after moving, the interior of the extension rod is empty, and the interior of the extension rod is communicated with the elastic rope inside the first hoop.
[0015] Preferably, an air groove is opened inside the air pipe, and a rubber pad is arranged in the air groove. After the second screw is screwed down, it is supported on the surface of the rubber pad, so that the rubber pad is deformed, and the space of the air groove is reduced. The air in the air groove enters into the interior of the extension rod, and the air inside the extension rod enters into the elastic rope inside the first hoop. The air squeezes the second hoop, so that the second hoop moves in the elastic rope, and the second hoop is inserted into the plug hole after moving.
[0016] Preferably, the plug-in rod is inserted into the plug-in tube, and the rubber ring on the surface of the plug-in rod is stuck in the inside of the plug-in tube. After the plug-in rod is inserted into the plug-in tube, the force block is pressed down, so that the force block moves downward as the plug-in rod is pressed down. The sleeve tube is sleeved on the outside of the first screw and the nut. After the screw tube is inserted into the inside of the sleeve tube, the screw tube is screwed on the surface of the first screw.
[0017] Preferably, the spring pushes the rotating ring so that the rotating ring moves away from the surface of the sleeve ring, and the rotating ring rises. The arc rod causes the protective cover to rise with the rotating ring. After the protective cover rises, the protective cover is wrapped around the outside of the hydraulic connecting pipe.
[0018] Compared with the prior art, the present invention has the following beneficial effects:
[0019] The present invention proposes that when the plug-in rod is plugged into the plug-in tube, the rotating rod can be rotated so that a suitable screw tube is plugged into the interior of the sleeve tube, and the screw tube can be quickly replaced. After the plug-in rod is plugged into the plug-in tube, the force block is pressed down, so that the force block moves downward, and the force block drives the rotating ring to move downward through the connecting plate, and the rotating ring drives the protective cover to move downward through the arc rod. The protective cover is located on the surface of the hydraulic connecting tube and plays a protective role. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.
[0021] Figure 2 It is a schematic diagram of the structure of the splice rod of the present invention.
[0022] Figure 3 This is a schematic diagram of the sleeve pipe structure of the present invention.
[0023] Figure 4 This is a schematic structural diagram of the sleeve pipe from another perspective of the present invention.
[0024] Figure 5 This is a schematic diagram of the top view of the sleeve pipe structure of the present invention.
[0025] Figure 6 It is a schematic diagram of the rotating ring structure of the present invention.
[0026] Figure 7 It is a schematic diagram of the cross-sectional structure of the clamping block of the present invention.
[0027] Figure 8 It is a schematic diagram of the cross-sectional structure of the first hoop of the present invention.
[0028] Fig. 9 It is a structural schematic diagram of the cross section of the clamping block of the present invention from another viewing angle.
[0029] Fig.10 for Fig. 9 A schematic diagram of the enlarged structure in the middle.
[0030] In the figure: a sleeve tube 1, a plug-in rod 2, a first screw rod 3, a nut 4, a rubber ring 5, a rotating rod 6, an extension rod 7, a second screw rod 8, an air pipe 9, a force ring 10, a first ring groove 11, a screw tube 12, a force block 13, a plug-in tube 14, a lifting ring 15, a hydraulic connecting pipe 16, a protective cover 17, a second ring groove 18, a third ring groove 19, a screwing ring 20, a plug hole 21, a cross bar 22, an arc plate 23, a connecting plate 24, a spring 25, a sleeve ring 26, a rotating ring 27, a fixed ring 28, a clamping block 29, a curved rod 30, an elastic rope 31, a hollow groove 32, a first hoop 33, a plug hole 34, a second hoop 35, an air groove 36, a rubber pad 37, and a display screen 38. DETAILED DESCRIPTION
[0031] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0032] See also Figures 1 to 10 , the present invention provides a technical solution:
[0033] Embodiment 1: A hydraulic bolt tensioner for large equipment, comprising: a sleeve tube 1, a plug rod 2 is arranged on the top of the sleeve tube 1, a first screw rod 3 is arranged on the bottom of the sleeve tube 1; a lifting ring 15 is arranged on the top of the sleeve tube 1, a force block 13 is arranged on the surface of the sleeve tube 1, a plug tube 14 is arranged on the top of the force block 13, a hydraulic connecting tube 16 is arranged on the surface of the sleeve tube 1, a protective cover 17 is arranged on the bottom of the hydraulic connecting tube 16, and an arc rod 30 is arranged on the bottom of the protective cover 17; and an extension rod 7, an extension rod 14, an extension rod 15, an extension rod 16, an extension rod 16, an extension rod 17 ...5, an extension rod 15, an extension rod 15, an extension rod 15, an extension rod 15, an extension rod 15, an extension rod 15, an extension rod 15, an extension rod 15, an extension rod 15, an extension rod 15, an extension rod 15, an extension rod 15, an extension rod 15, an extension rod 15, an extension rod 15, an extension rod 15, an extension rod 15, an extension rod 15, an extension rod 1 A first hoop ring 33 is provided at the end of the rod 7, and a stress ring 10 is provided inside the first hoop ring 33. The end of the rotating rod 6 is connected to the first hoop ring 33 through the extension rod 7. The second hoop ring 35 is inserted into the first hoop ring 33. A hollow groove 32 is provided inside the first hoop ring 33. There is gas inside the hollow groove 32. After the elastic rope 31 is pushed out of the outside of the hollow groove 32 and the second hoop ring 35 is pushed into the hollow groove 32, the first hoop ring 33 and the second hoop ring 35 can be clamped in the first ring groove 11 on the surface of the stress ring 10.
[0034] Embodiment 2: On the basis of embodiment 1, the surface of the first screw rod 3 is screwed with the nut 4, the surface of the plug-in rod 2 is provided with a rubber ring 5, and the rubber ring 5 is provided in multiple groups. A rotating rod 6 is inserted at the top of the plug-in rod 2, and the rotating rod 6 can rotate inside the plug-in rod 2. An extension rod 7 is fixed on the surface of the rotating rod 6, and the extension rod 7 is provided in multiple groups. The extension rod 7 rotates with the rotating rod 6. An air pipe 9 is fixed to the top of the rotating rod 6. A second screw rod 8 is screwed on the top of the air pipe 9, and the second screw 8 can rotate on the top of the air pipe 9. An air groove 36 is opened inside the air pipe 9, and a rubber pad 37 is provided in the air groove 36. After the second screw rod 8 is screwed down, it is held on the surface of the rubber pad 37, so that the rubber pad 37 is deformed, the space of the air groove 36 is reduced, and the air in the air groove 36 enters the interior of the extension rod 7. The air inside the extension rod 7 enters the elastic rope 31 inside the first hoop 33, and the air squeezes the second screw rod 8. The second hoop ring 35 allows the second hoop ring 35 to move in the elastic rope 31. After the second hoop ring 35 moves, it is inserted into the plug hole 34. The plug rod 2 is inserted into the plug tube 14. The rubber ring 5 on the surface of the plug rod 2 is stuck in the inside of the plug tube 14. After the plug rod 2 is inserted into the plug tube 14, the force block 13 is pressed down, so that the force block 13 moves downward with the downward pressure of the plug rod 2. The sleeve tube 1 is sleeved on the outside of the first screw rod 3 and the nut 4. After the screw tube 12 is inserted into the inside of the sleeve tube 1, the screw tube 12 is screwed on the surface of the first screw 3. The rotating rod 6 can rotate in the plug rod 2. When the plug rod 2 is inserted into the plug tube 14, the rotating rod 6 can rotate, so that a suitable screw tube 12 is inserted into the inside of the sleeve tube 1, and the screw tube 12 can be quickly replaced. After the plug rod 2 is inserted into the plug tube 14, the force block 13 is pressed down, so that the force block 13 moves downward. A display screen 38 is provided on the surface of the sleeve tube 1.
[0035] A first annular groove 11 is provided on the surface of the stress ring 10, and a screw tube 12 is fixed to the bottom of the stress ring 10. The screw tube 12 is inserted into the inside of the sleeve pipe 1. The stress ring 10 is located at the top of the lifting ring 15. The hydraulic connecting pipe 16 is connected to the hydraulic equipment. The lifting ring 15 can be lifted and lowered at the top of the sleeve pipe 1. After the lifting ring 15 rises, it is supported on the bottom of the stress ring 10, so that the stress ring 10 and the screw tube 12 are lifted. After the second hoop ring 35 is pushed into the hollow groove 32, the first hoop ring 33 and the second hoop ring 35 can be clamped in the first annular groove 11 on the surface of the stress ring 10, so that multiple groups of screw tubes 12 are provided on the top of the plug-in rod 2, and the second screw rod 8 is screwed. After the second screw rod 8 moves down, it is supported on the surface of the rubber pad 37, so that the volume of the air groove 36 is compressed.
[0036] A second annular groove 18 is provided on the surface of the sleeve tube 1, and an arc plate 23 is provided in the second annular groove 18. The arc plate 23 can move in the second annular groove 18. A cross bar 22 is fixed to the end of the arc plate 23, and the cross bar 22 moves with the arc plate 23. A plug-in tube 14 is fixed to the end of the cross bar 22. A force block 13 is plugged into the bottom of the plug-in tube 14. The force block 13 can be lifted and lowered inside the plug-in tube 14. A connecting plate 24 is fixed to the surface of the force block 13. The connecting plate 24 moves up and down with the force block 13. A rotating ring 27 is fixed to the end of the connecting plate 24. A third annular groove 19 is provided on the surface of the sleeve tube 1, and a screwing ring 20 is provided at the bottom of the sleeve tube 1. The screwing ring 20 can rotate inside the sleeve tube 1, and the screwing ring 20 is sleeved on the surface of the nut 4, and the rotation of the screwing ring 20 can drive the nut 4 to rotate. The surface of the screwing ring 20 is provided with a plug hole 21, and the rotating ring 27 is located in the third ring groove 19. The rotating ring 27 can rise and fall on the surface of the third ring groove 19. The surface of the third ring groove 19 is fixed with a fixed ring 28, and a sleeve ring 26 is arranged outside the fixed ring 28. The sleeve ring 26 can rotate outside the fixed ring 28. A spring 25 is arranged on the surface of the sleeve ring 26, and the spring 25 is connected to the bottom of the rotating ring 27. The spring 25 has a thrust on the rotating ring 27, so that the rotating ring 27 is away from the sleeve ring 2 6, a clamping block 29 is provided on the surface of the rotating ring 27, and the clamping block 29 can move on the surface of the rotating ring 27. The surface of the clamping block 29 is connected to an arc rod 30, and the arc rod 30 moves with the clamping block 29. An elastic rope 31 is provided inside the first hoop 33, and a hollow groove 32 is provided inside the elastic rope 31. The end of the hollow groove 32 is connected to a second hoop 35, and the second hoop 35 is inserted in the elastic rope 31, and the second hoop 35 can move in the elastic rope 31. An insertion hole 34 is provided at the end of the first hoop 33, and the second hoop 35 can be inserted into the insertion hole 34 after moving. The interior of the extension rod 7 is empty, and the interior of the extension rod 7 is connected to the The elastic rope 31 inside the first hoop 33 is connected, and the spring 25 pushes the rotating ring 27, so that the rotating ring 27 moves away from the surface of the sleeve ring 26, and the rotating ring 27 rises. The arc rod 30 makes the protective cover 17 rise with the rotating ring 27. After the protective cover 17 rises, the protective cover 17 is wrapped around the outside of the hydraulic connecting pipe 16. The rotating ring 27 drives the protective cover 17 to move downward through the arc rod 30. The protective cover 17 is located on the surface of the hydraulic connecting pipe 16 and plays a protective role. When the protective cover 17 moves downward, the hydraulic equipment can be connected to the end of the hydraulic connecting pipe 16, and the arc plate 23 can move in the second ring groove 18, and the sleeve ring 26 can move outside the fixed ring 28.
[0037] Insert the screw tube 12 into the interior of the sleeve tube 1, and screw the screw tube 12 on the surface of the first screw rod 3, connect the hydraulic connecting tube 16 to the hydraulic equipment, so that the pressure inside the sleeve tube 1 increases, push up the lifting ring 15, and the lifting ring 15 is supported on the surface of the force ring 10 at the top of the screw tube 12, so that the force ring 10 and the screw tube 12 drive the first screw rod 3 and the nut 4 to rise, and the screwing ring 20 inside the sleeve tube 1 is sleeved on the surface of the nut 4, the rod is inserted into the insertion hole 21, and the screwing ring 20 is rotated, so that the nut 4 can be easily screwed down on the surface of the first screw rod 3, and the top of the plug-in rod 2 The rotating rod 6 can rotate inside the plug-in rod 2, and the end of the rotating rod 6 is connected to the first hoop 33 through the extension rod 7. The second hoop 35 is inserted into the first hoop 33. The first hoop 33 is provided with a hollow groove 32. There is gas inside the hollow groove 32. The elastic rope 31 is pushed out of the outside of the hollow groove 32. After the second hoop 35 is pushed into the hollow groove 32, the first hoop 33 and the second hoop 35 can be clamped in the first ring groove 11 on the surface of the force ring 10, so that multiple groups of screw tubes 12 are provided on the top of the plug-in rod 2, and the second screw rod 8 is screwed. After the second screw rod 8 moves down, it is supported on the rubber pad. The surface of 37 compresses the volume of the air groove 36, and the air in the air groove 36 enters the hollow groove 32 through the extension rod 7. The second hoop 35 is pushed and inserted into the insertion hole 34, so that the force ring 10 and the screw tube 12 are stabilized at the bottom of the plug rod 2. The rotating rod 6 can rotate in the plug rod 2. When the plug rod 2 is inserted into the plug tube 14, the rotating rod 6 can rotate, so that the appropriate screw tube 12 is inserted into the inside of the sleeve tube 1, and the screw tube 12 can be quickly replaced. After the plug rod 2 is inserted into the plug tube 14, the force block 13 is pressed down, so that the force block 13 moves downward, and the force block 1 The rotating ring 27 is driven downward by the connecting plate 24, and the rotating ring 27 drives the protective cover 17 downward through the arc rod 30. The protective cover 17 is located on the surface of the hydraulic connecting pipe 16 and plays a protective role. When the protective cover 17 moves downward, the hydraulic device can be connected to the end of the hydraulic connecting pipe 16, and the arc plate 23 can move in the second ring groove 18, the sleeve ring 26 can move outside the fixed ring 28, and the clamping block 29 can move outside the rotating ring 27, so that the positions of the plug-in pipe 14 and the force-bearing block 13 can be adjusted to prevent the plug-in pipe 14 and the force-bearing block 13 from being inconvenient to place when they are located in a narrow position.
[0038] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.
Claims
1. A hydraulic bolt tensioner for large equipment, characterized in that: include: A sleeve tube (1), wherein a plug-in rod (2) is arranged at the top of the sleeve tube (1), and a first screw rod (3) is arranged at the bottom of the sleeve tube (1); A lifting ring (15) is arranged at the top of the sleeve tube (1), a force-bearing block (13) is arranged on the surface of the sleeve tube (1), a plug-in tube (14) is arranged on the top of the force-bearing block (13), a hydraulic connecting tube (16) is arranged on the surface of the sleeve tube (1), a protective cover (17) is arranged at the bottom of the hydraulic connecting tube (16), and an arc-shaped rod (30) is arranged at the bottom of the protective cover (17); and an extension rod (7), a first hoop (33) is arranged at the end of the extension rod (7), a force-bearing ring (10) is arranged inside the first hoop (33), and the surface of the first screw rod (3) is provided with a first hoop (33). A surface screw nut (4) is provided on the surface of the plug-in rod (2), and the rubber ring (5) is provided in multiple groups. A rotating rod (6) is inserted into the top of the plug-in rod (2), and the rotating rod (6) can rotate inside the plug-in rod (2). An extension rod (7) is fixed to the surface of the rotating rod (6), and the extension rod (7) is provided in multiple groups. The extension rod (7) rotates along with the rotating rod (6). An air pipe (9) is fixed to the top of the rotating rod (6), and a second screw rod (8) is screwed to the top of the air pipe (9), and the second screw rod (8) can rotate on the top of the air pipe (9).
2. The hydraulic bolt tensioner for large equipment according to claim 1, characterized in that: The surface of the stress ring (10) is provided with a first annular groove (11), and a screw pipe (12) is fixed to the bottom of the stress ring (10). The screw pipe (12) is inserted into the interior of the sleeve pipe (1). The stress ring (10) is located at the top of the lifting ring (15), and the hydraulic connecting pipe (16) is connected to the hydraulic equipment. The lifting ring (15) can be lifted and lowered at the top of the sleeve pipe (1). After the lifting ring (15) rises, it is supported on the bottom of the stress ring (10), so that the stress ring (10) and the screw pipe (12) are lifted.
3. The hydraulic bolt tensioner for large equipment according to claim 2 is characterized in that: A second annular groove (18) is formed on the surface of the sleeve tube (1). An arc plate (23) is arranged in the second annular groove (18). The arc plate (23) can move in the second annular groove (18). A cross bar (22) is fixed to the end of the arc plate (23). The cross bar (22) moves along with the arc plate (23). A plug-in tube (14) is fixed to the end of the cross bar (22). A force bearing block (13) is plugged into the bottom of the plug-in tube (14). The force bearing block (13) can be lifted and lowered inside the plug-in tube (14). A connecting plate (24) is fixed to the surface of the force bearing block (13). The connecting plate (24) moves and rises and falls along with the force bearing block (13). A rotating ring (27) is fixed to the end of the connecting plate (24).
4. The hydraulic bolt tensioner for large equipment according to claim 3 is characterized in that: The surface of the sleeve tube (1) is provided with a third annular groove (19), and the bottom of the sleeve tube (1) is provided with a screwing ring (20), which can rotate inside the sleeve tube (1). The screwing ring (20) is sleeved on the surface of the nut (4), and the rotation of the screwing ring (20) can drive the nut (4) to rotate. The surface of the screwing ring (20) is provided with an insertion hole (21).
5. The hydraulic bolt tensioner for large equipment according to claim 4 is characterized in that: The rotating ring (27) is located in the third ring groove (19). The rotating ring (27) can be raised and lowered on the surface of the third ring groove (19). A fixed ring (28) is fixed on the surface of the third ring groove (19). A sleeve ring (26) is arranged outside the fixed ring (28). The sleeve ring (26) can rotate outside the fixed ring (28). A spring (25) is arranged on the surface of the sleeve ring (26). The spring (25) is connected to the bottom of the rotating ring (27). The spring (25) has a thrust on the rotating ring (27) so that the rotating ring (27) moves away from the surface of the sleeve ring (26). A clamping block (29) is arranged on the surface of the rotating ring (27). The clamping block (29) can move on the surface of the rotating ring (27). The surface of the clamping block (29) is connected to an arc rod (30). The arc rod (30) moves along with the clamping block (29).
6. The hydraulic bolt tensioner for large equipment according to claim 5, characterized in that: An elastic rope (31) is provided inside the first hoop (33), a hollow groove (32) is provided inside the elastic rope (31), an end of the hollow groove (32) is connected to a second hoop (35), the second hoop (35) is inserted into the elastic rope (31), and the second hoop (35) can move in the elastic rope (31), an insertion hole (34) is provided at the end of the first hoop (33), and the second hoop (35) can be inserted into the insertion hole (34) after moving, and the interior of the extension rod (7) is hollow, and the interior of the extension rod (7) is in communication with the elastic rope (31) inside the first hoop (33).
7. The hydraulic bolt tensioner for large equipment according to claim 6, characterized in that: An air groove (36) is provided inside the air pipe (9), and a rubber pad (37) is provided in the air groove (36). After the second screw rod (8) is screwed down, it is supported on the surface of the rubber pad (37), so that the rubber pad (37) is deformed, and the space of the air groove (36) is reduced. The air in the air groove (36) enters the interior of the extension rod (7), and the air in the extension rod (7) enters the elastic rope (31) inside the first hoop (33). The air squeezes the second hoop (35), so that the second hoop (35) moves in the elastic rope (31), and the second hoop (35) is inserted into the insertion hole (34) after moving.
8. The hydraulic bolt tensioner for large equipment according to claim 7, characterized in that: The plug-in rod (2) is plugged into the plug-in tube (14), and the rubber ring (5) on the surface of the plug-in rod (2) is stuck in the plug-in tube (14). After the plug-in rod (2) is plugged into the plug-in tube (14), the force block (13) is pressed downward, so that the force block (13) moves downward as the plug-in rod (2) is pressed downward. The sleeve tube (1) is sleeved on the outside of the first screw rod (3) and the nut (4). After the screw tube (12) is plugged into the inside of the sleeve tube (1), the screw tube (12) is screwed onto the surface of the first screw rod (3).
9. The hydraulic bolt tensioner for large equipment according to claim 8, characterized in that: The spring (25) pushes the rotating ring (27) so that the rotating ring (27) moves away from the surface of the sleeve ring (26), the rotating ring (27) rises, and the arc-shaped rod (30) causes the protective cover (17) to rise along with the rotating ring (27). After the protective cover (17) rises, the protective cover (17) wraps around the outside of the hydraulic connection pipe (16).
Citation Information
Patent Citations
Hydraulic bolt tensioning jack
CN111408931A
Cylinder cover valve guide pipe device for quickly replacing Cummins generator set
CN210282150U