Hydraulic wrench for dismounting and mounting the motor foot bolts of a main pump

Abstract

The present application belongs to the technical field of hydraulic wrench, and particularly relates to a hydraulic wrench for disassembling foot bolts of a main pump motor. The hydraulic wrench comprises a shell, a working area matched with the shell inside the bottom of the shell, a working head matched with the working area, a power area matched with the working area at the top of the shell, an oil pipe rotary joint at the output end of the power area, a sleeve matched with the oil pipe rotary joint at the outside of the oil pipe rotary joint, and fastening screws at the top and bottom of the sleeve inside. The working head can be assembled with the hydraulic wrench for operation, can be inserted into the working area for use, can realize torque transfer, can provide sufficient operation space for the hydraulic wrench, and can realize torque verification of all foot bolts of the main pump motor, so as to expand the use range of the hydraulic wrench in the later period, and reduce the limitation of the hydraulic wrench caused by specific space.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic wrench technology, specifically relating to a hydraulic wrench for disassembling and assembling anchor bolts of a main pump motor. Background Technology

[0002] Most existing hydraulic wrenches lack internal working heads for proper operation. This leads to significant space limitations during use, with the smallest distance between the bolt center and side wall being only 65mm and the bolt top plane being 160mm. Consequently, the hydraulic wrench's reaction arm lacks sufficient workpiece to complete bolt assembly and disassembly operations. Furthermore, most hydraulic wrenches lack internal oil pipe interfaces with fastening mechanisms. When connecting to external oil pipes, accidental forceful pulling can cause the external oil pipe to loosen or detach from the hydraulic wrench's interface. This not only results in oil leakage but also affects the wrench's working efficiency and reduces the security of the connection between the hydraulic wrench and the external oil pipe. Summary of the Invention

[0003] The purpose of this invention is to provide a hydraulic wrench for disassembling and assembling anchor bolts of a main pump motor. This wrench addresses the problem mentioned in the background art: most existing hydraulic wrenches lack a working head for proper operation, resulting in limited space during use. For example, the distance between the bolt center and side wall is only 65mm at the smallest position, and the distance between the bolt top plane and the upper end plane is 160mm. This leaves insufficient workpiece in the hydraulic wrench's reaction arm, making bolt disassembly and assembly impossible. Furthermore, most hydraulic wrenches lack a connecting and fastening mechanism at the internal oil pipe interface, leading to loosening or detachment of the external oil pipe from the hydraulic wrench interface due to accidental strong pulling, thus reducing the stability of the connection between the hydraulic wrench and the external oil pipe.

[0004] The technical solution of the present invention is as follows: A hydraulic wrench for disassembling and assembling anchor bolts of a main pump motor includes a housing. The bottom of the housing has a working area that mates with it. The working area has a working head that mates with it. The top of the housing has a power area that mates with the working area. The output end of the power area has an oil pipe rotary joint. The outer side of the oil pipe rotary joint has a sleeve that mates with it. The top and bottom of the sleeve are both provided with fastening screws. The bottom of one set of fastening screws and the top of another set of fastening screws are both provided with clamping plates that mate with the oil pipe rotary joint. The top and bottom of the sleeve near the oil pipe rotary joint are both provided with guide rails. The inner side of both sets of guide rails near the oil pipe rotary joint is provided with a sealing limiting plate that mates with it. The top of one set of sealing limiting plates and the bottom of the other set of sealing limiting plates are both provided with hinge rods. The top side of one set of guide rails away from the oil pipe rotary joint and the bottom side of the other set of guide rails away from the oil pipe rotary joint are both provided with adjusting and fixing components.

[0005] The adjustment and fixing assembly includes a slot, a slider, a spring, a mounting groove, a locking rod, and a through groove. The slider and the through groove are provided in two sets. The two sets of through grooves are located on the front end of the two sets of guide rails away from the oil pipe rotary joint. The two sets of sliders are slidably located inside the two sets of guide rails away from the oil pipe rotary joint. The two sets of sliders are hinged to the ends of the two sets of hinge rods away from the sealing limit plate.

[0006] The bottom of one set of sliders and the top of the other set of sliders are provided with mounting grooves. The bottom of one set of mounting grooves and the top of the other set of mounting grooves are provided with locking rods extending into the guide rail. The top of one set of mounting grooves and the bottom of the other set of mounting grooves are provided with springs connected to the locking rods.

[0007] The card slots are provided in multiple sets, and the multiple sets of card slots are evenly located at the inner bottom of one set of guide rails and the inner top of another set of guide rails. The card slots are engaged with the outside of the card rod and cooperate with it.

[0008] An extension rod is provided at the top of one set of sealing limiting plates and at the bottom of another set of sealing limiting plates, and a hinge seat that cooperates with the hinge rod is provided at the top of one set of extension rods and at the bottom of the other set of extension rods.

[0009] Both sets of mounting slots have a limiting through slot at one end of their front side, and both sets of limiting through slots have a pull block inside that connects to the lever. The pull block extends to the outside of the guide rail through the limiting through slot.

[0010] The sleeve has internal threaded holes at both the top and bottom, and these internal threaded holes cooperate with the fastening screw.

[0011] The multiple sets of slots are provided with guide slopes on the side of the slots closest to the oil pipe rotary joint and on the side of the chuck closest to the oil pipe rotary joint, and the two sets of guide slopes cooperate with each other.

[0012] The beneficial effects of this invention are as follows: The design of the working head allows for assembly and use with a hydraulic wrench, enabling the working head to be inserted into the working area. This specific working head design allows for torque transfer, providing sufficient operating space for the hydraulic wrench, and facilitating torque verification of all bolts on the main pump motor. This expands the hydraulic wrench's usability and reduces limitations imposed by specific spatial constraints. The interplay of guide rails, slots, sliders, springs, mounting grooves, locking rods, and through slots ensures a secure connection between the oil pipe rotary joint and the external oil pipe, effectively preventing loosening or detachment of the external oil pipe due to accidental pulling. This improves connection tightness, reduces oil leakage, and ensures the hydraulic wrench's working efficiency. Furthermore, the interplay of the sleeve, clamping plate, and fastening screw allows for the assembly of this fastening structure with the oil pipe rotary joint, facilitating the assembly of the guide rails and related components with the oil pipe rotary joint according to actual operational needs. This significantly improves the flexibility and practicality of the design. Attached Figure Description

[0013] Figure 1 This is a front sectional view of a hydraulic wrench for disassembling and assembling anchor bolts of a main pump motor provided by the present invention.

[0014] Figure 2 This is an enlarged front sectional view of the rotary joint for the oil pipe of the present invention;

[0015] Figure 3 This is a front enlarged view of the rotary joint for the oil pipe of the present invention;

[0016] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A;

[0017] Figure 5 This is a top view of the working head of the present invention;

[0018] Figure 6 This is a front view of the working head of the present invention.

[0019] In the diagram: 1. Housing, 2. Working area, 3. Power area, 4. Clamping plate, 5. Sleeve, 6. Fastening screw, 7. Sealing limit plate, 8. Hinge rod, 9. Guide rail, 10. Slot, 11. Slider, 12. Spring, 13. Mounting slot, 14. Locking rod, 15. Through slot, 16. Oil pipe rotary joint, 17. Working head. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1-6 As shown, the embodiment provided by the present invention: a hydraulic wrench for disassembling and assembling anchor bolts of a main pump motor includes a housing 1. The bottom of the housing 1 has a working area 2 that mates with it. A working head 17 is inserted into the working area 2. The top of the housing 1 has a power area 3 that mates with the working area 2. The output end of the power area 3 has an oil pipe rotary joint 16. A sleeve 5 is fitted around the outside of the oil pipe rotary joint 16. Fastening screws 6 are threaded through the top and bottom of the sleeve 5. The bottom of one set of fastening screws 6 and the top of another set of fastening screws 6 are both provided with… The sleeve 5 has a clamping plate 4 that mates with the oil pipe rotary joint 16. The top and bottom of the sleeve 5 near the oil pipe rotary joint 16 are provided with guide rails 9. The inside of the two sets of guide rails 9 near the oil pipe rotary joint 16 is provided with a sealing limiting plate 7 that mates with it. The top of one set of sealing limiting plates 7 and the bottom of the other set of sealing limiting plates 7 are both hinged with a hinge rod 8. The top of one set of guide rails 9 away from the oil pipe rotary joint 16 and the bottom of the other set of guide rails 9 away from the oil pipe rotary joint 16 are both provided with an adjusting and fixing component, which facilitates the operator to perform limiting operations on the external oil pipe later.

[0023] Furthermore, the adjusting and fixing assembly includes a slot 10, a slider 11, a spring 12, a mounting groove 13, a locking rod 14, and a through groove 15. Both the slider 11 and the through groove 15 are provided in two sets. The two sets of through grooves 15 are located on the front end of the two sets of guide rails 9, away from the oil pipe rotary joint 16. The two sets of sliders 11 slide inside the two sets of guide rails 9 on the side away from the oil pipe rotary joint 16. The two sets of sliders 11 are hinged to the ends of the two sets of hinge rods 8 away from the sealing limit plate 7. The bottom of one set of sliders 11 is connected to the top of the other set of sliders 11. Each set of mounting slots 13 is provided. The bottom of one set of mounting slots 13 and the top of the other set of mounting slots 13 are provided with locking rods 14 extending into the guide rail 9. The top of one set of mounting slots 13 and the bottom of the other set of mounting slots 13 are provided with springs 12 connected to the locking rods 14. Multiple sets of locking slots 10 are provided. The multiple sets of locking slots 10 are evenly located at the bottom of one set of guide rails 9 and the top of the other set of guide rails 9. The locking slots 10 are engaged with the outside of the locking rods 14 and cooperate with them, which facilitates the operator to perform limiting operations on the external oil pipes later.

[0024] Furthermore, both the top of one set of sealing limit plates 7 and the bottom of the other set of sealing limit plates 7 are provided with extension rods, and both the top of one set of extension rods and the bottom of the other set of extension rods are provided with hinge seats that cooperate with the hinge rod 8, so as to facilitate the hinge operation of the hinge rod 8.

[0025] Furthermore, each of the two sets of mounting slots 13 has a limiting through slot at one end of its front side, and each of the two sets of limiting through slots has a pull block connected to the locking rod 14 inside. The pull block extends to the outside of the guide rail 9 through the limiting through slot 15, which makes it convenient for the operator to release the fixed operation of the slider 11 by the cooperation of the pull block and the limiting through slot.

[0026] Furthermore, the top and bottom of the sleeve 5 are provided with internal threaded holes, and the internal threaded holes cooperate with the fastening screw 6 to facilitate the rotation and fastening operation of the fastening screw 6.

[0027] Furthermore, the sides of the multiple sets of slots 10 near the oil pipe rotary joint 16 and the sides of the clamp rod 14 near the oil pipe rotary joint 16 are provided with guide slopes, and the two sets of guide slopes cooperate with each other to facilitate the operator to quickly release the sealing expansion work of the sealing limit plate 7 later.

[0028] Working Principle: A hydraulic wrench is a professional bolt tightening tool that uses hydraulic power to provide high torque output for the installation and removal of bolts. It is often used to tighten and loosen bolts larger than one inch. The output torque of a hydraulic wrench is no less than 2500 Nm, which not only improves work efficiency and reduces labor intensity, but also greatly improves installation quality and facilitates on-site safety management. The working head of a hydraulic torque wrench mainly consists of three parts: a frame, a cylinder, and a transmission component. The cylinder outputs force, and the cylinder piston rod and the transmission component form a kinematic pair. The distance from the center of the cylinder to the center of the transmission component is the amplification arm of the hydraulic wrench. The cylinder output force multiplied by the amplification arm is the theoretical output torque of the hydraulic torque wrench. Due to the existence of frictional resistance, the actual output torque of the hydraulic wrench is less than the theoretical output torque. Before operation, the guide slope design of the slot 10 and the lever 14 allows the operator to directly push the slider 1. 1. The hydraulic wrench moves closer to the rotary joint 16 inside the guide rail 9. At this time, the guide slope design of the slot 10 and the lever 14 allows the slot 10 to push the lever 14 to move within the mounting groove 13, compressing the spring 12. Then, the movement of the slider 11 drives the hinge rod 8 to perform a hinge expansion operation, allowing the hinge rod 8 to pull the sealing limit plate 7 away from the guide rail 9. This releases the seal of the sealing limit plate 7 on the rotary joint 16, allowing the external oil pipe to be inserted into the rotary joint 16 for later hydraulic wrench operation. When not in use, the seal between the sealing limit plate 7 and the rotary joint 16 effectively blocks external forces. Dust enters the interior of the oil pipe rotary joint 16, reducing the impact of dust on some internal parts of the hydraulic wrench. After the sealing limit plate 7 completes its expansion, the elastic restoring force of the spring 12 can drive the locking rod 14 to return to its original position inside the locking groove 10. At this time, by pulling the pull block to move it inside the through groove 15, the locking rod 14 is disengaged from the locking groove 10, thus compressing the spring 12. This allows the slider 11 to move in the opposite direction inside the guide rail 9, and then drives the two sets of sealing limit plates 7 to move closer to each other, thereby limiting the external oil pipe and improving the sealing performance of its connection with the oil pipe rotary joint 16. This reduces the loosening or detachment caused by accidental pulling later. When the sealing limit plate 7... After the movement is completed, the pull block is released, and the elastic restoring force of the spring 12 can drive the locking rod 14 to return to its original position and insert into the slot 10. Finally, when disassembling or assembling bolts within a limited space, the operator can take the working head 17, as shown in Figure 6 (one side of the working head 17 has an internal hexagonal through slot, and the top of the other side of the working head 17 has a hexagonal insert, which is inserted into and cooperates with the interior of the working area 2). The protruding part of the working head 17 is inserted into the interior of the working area 2 to complete the assembly of the working head 17 and the working area 2. Finally, the working head 17 is rotated by the operation of the hydraulic wrench to achieve torque transfer and provide sufficient operating space for the hydraulic wrench.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. A hydraulic wrench for disassembling and assembling anchor bolts of a main pump motor, characterized in that: The device includes a housing. The bottom of the housing has a working area that mates with it. The working area contains a working head that mates with it. The top of the housing has a power area that mates with the working area. The output end of the power area has an oil pipe rotary joint. The outer side of the oil pipe rotary joint has a sleeve that mates with it. The top and bottom of the sleeve have fastening screws. The bottom of one set of fastening screws and the top of another set of fastening screws each have clamping plates that mate with the oil pipe rotary joint. The top and bottom of the sleeve near the oil pipe rotary joint have guide rails. The inside of both sets of guide rails near the oil pipe rotary joint have sealing and limiting plates that mate with it. The top of one set of sealing and limiting plates and the bottom of another set of sealing and limiting plates each have hinge rods. The top of one set of guide rails away from the oil pipe rotary joint and the bottom of the other set of guide rails away from the oil pipe rotary joint each have adjusting and fixing components. The adjustment and fixing assembly includes a slot, a slider, a spring, a mounting slot, a locking rod, and a through slot. The slider and the through slot are provided in two sets. The two sets of through slots are located on the front end of the two sets of guide rails away from the oil pipe rotary joint. The two sets of sliders are slidably located inside the two sets of guide rails away from the oil pipe rotary joint. The two sets of sliders are hinged to the ends of the two sets of hinge rods away from the sealing limit plate. The bottom of one set of sliders and the top of the other set of sliders are provided with mounting grooves. The bottom of one set of mounting grooves and the top of the other set of mounting grooves are provided with locking rods extending into the guide rail. The top of one set of mounting grooves and the bottom of the other set of mounting grooves are provided with springs connected to the locking rods. The card slots are provided in multiple sets, and the multiple sets of card slots are evenly located at the inner bottom of one set of guide rails and the inner top of another set of guide rails. The card slots are engaged with the outside of the card rod and cooperate with it.

2. The hydraulic wrench for disassembling and assembling anchor bolts of a main pump motor as described in claim 1, characterized in that: An extension rod is provided at the top of one set of sealing limiting plates and at the bottom of another set of sealing limiting plates, and a hinge seat that cooperates with the hinge rod is provided at the top of one set of extension rods and at the bottom of the other set of extension rods.

3. The hydraulic wrench for disassembling and assembling anchor bolts of a main pump motor as described in claim 1, characterized in that: Both sets of mounting slots have a limiting through slot at one end of their front side, and both sets of limiting through slots have a pull block inside that connects to the locking rod. The pull block extends to the outside of the guide rail through the limiting through slot.

4. The hydraulic wrench for disassembling and assembling anchor bolts of a main pump motor as described in claim 1, characterized in that: The sleeve has internal threaded holes at both the top and bottom, and these internal threaded holes cooperate with the fastening screw.

5. A hydraulic wrench for disassembling and assembling anchor bolts of a main pump motor as described in claim 1, characterized in that: The multiple sets of slots are provided with guide slopes on the side of the slots closest to the oil pipe rotary joint and on the side of the chuck closest to the oil pipe rotary joint, and the two sets of guide slopes cooperate with each other.

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