Spring self-resetting two-stage hydraulic stretcher with counting function

A hydraulic tensioner and self-reset technology, applied in the direction of instruments, manufacturing tools, counting mechanisms/items, etc., can solve the problems of easy jamming, inaccurate counting, etc., and achieve increased tensile force, accurate counting, and avoidance of The effect of security incidents

Active Publication Date: 2020-11-13
马鞍山市罗泰特机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages that the existing hydraulic tensioner adopts manual counting or counting is inaccurate when using a counting device, and is prone to jamming during use, and provides a Secondary function spring self-resetting two-stage hydraulic tensioner

Method used

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  • Spring self-resetting two-stage hydraulic stretcher with counting function
  • Spring self-resetting two-stage hydraulic stretcher with counting function
  • Spring self-resetting two-stage hydraulic stretcher with counting function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of spring self-resetting two-stage hydraulic stretching with counting function in this embodiment, such as figure 1 and figure 2 As shown, it includes a stretcher main body and a counting device 11 installed on the side wall of the stretcher main body. The stretcher main body includes a pull rod 4 and a first oil cylinder 3 and a second oil cylinder 14 connected up and down. The pull rod 4 is set In the two oil cylinders, the first piston 5 and the second piston 15 are respectively arranged between the pull rod 4 and the two oil cylinders, the bottom of the first piston 5 is against the top of the second piston 15, and the upper end of the pull rod 4 is fixedly installed Threaded cover 17 is arranged. The present invention greatly improves the working tension by designing two oil cylinders, can effectively reduce the diameter of the stretcher, and is more suitable for use in working conditions with narrow spaces.

[0040] The counting device 11 is installed on...

Embodiment 2

[0046] A spring self-resetting two-stage hydraulic tensioner with counting function in this embodiment is basically the same in structure as in Embodiment 1, the main difference being: figure 2 and Figure 6 As shown, the main body of the tensioner includes an end cover 1, a first oil cylinder 3, a second oil cylinder 14, a support sleeve 8, a pull rod 4, a high-pressure joint 12 and a threaded sleeve 17 connected successively from top to bottom. 1 is a cylindrical shell with a through hole processed at the center of its top. The diameter of the through hole matches the top of the pull rod 4. The top of the pull rod 4 is installed in the through hole, and its upper end is fixed with a threaded sleeve 17 by bolts. The first disc spring 2 can be placed in the inner cavity of the end cover 1 , and the first disc spring 2 is sleeved on the threaded sleeve 17 . Such as Figure 7 As shown, the lower part of the threaded sleeve 17 protrudes outward to form a boss, the bottom of th...

Embodiment 3

[0054] A spring self-resetting two-stage hydraulic tensioner with counting function in this embodiment is basically the same in structure as in Embodiment 2, the difference mainly lies in: Figure 8-10 As shown, the shifting gear assembly 10 includes a gear case, a first gear 1002, a second gear 1003 and an inner hexagonal ring gear 9, the first gear 1002 and the second gear 1003 are installed in the gear case, and the first The second gear 1003 is externally meshed with the first gear 1002 and the inner hexagonal ring gear 9 respectively. The gear box body has an integrally formed structure. Improve the overall strength and sealing of the gearbox, and it is not easy to crack in frequent use occasions.

[0055] Such as Figure 9 As shown, a positioning block 1008 is provided on the side of the gear box close to the hydraulic stretcher, and a positioning slot is provided at the corresponding position where the gear box is installed on the stretcher, and the positioning block 1...

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Abstract

The invention discloses a spring self-resetting two-stage hydraulic stretcher with a counting function, and belongs to the technical field of stretching equipment. The spring self-resetting two-stagehydraulic stretcher comprises a stretcher body and a counting device arranged on the side wall of the stretcher body, wherein the counting device comprises an oil separation block and a digital counter; the oil separation block is of a hollow structure, and the digital counter is vertically arranged above the interior of the oil separation block; a rotating head is fixedly arranged on a driving shaft of the digital counter; a pushing mechanism rotatably matched with the rotating head is arranged below the rotating head; the pushing mechanism is supported and arranged in the oil separation block and can move up and down through oil pressure driving; and a second disc spring further sleeves the pushing mechanism. Through the adoption of the technical scheme, the problem can be effectively solved, the performance state of a product can be conveniently monitored, the inaccurate counting due to manual error operation is prevented, the occurrence of safety accidents in the operation is effectively avoided, meanwhile, the use is more stable, and the installation efficiency of wind power equipment is further improved.

Description

technical field [0001] The invention belongs to the technical field of stretching equipment, and more specifically relates to a spring self-resetting two-stage hydraulic stretcher with a counting function. Background technique [0002] Bolts and nuts are indispensable parts for assembly in the mechanical field. The fixing method of bolts and nuts is stronger and more reliable than other fixing methods, so it has become the most commonly used method for fixing two or more parts together. Since the bolts used in some large-scale equipment are relatively thick, the pre-tightening force is very large, if the fastening and dismounting of the bolts are done manually, the labor intensity is very high. The hydraulic bolt tensioner is referred to as the hydraulic tensioner. It has the functions of bolt fastening and disassembly. By using the hydraulic power provided by the ultra-high pressure pump, the bolt is stretched in its elastic deformation zone by using the elastic range allow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P19/06B23P19/00G06M1/12
CPCB23P19/06B23P19/00G06M1/126
Inventor 瞿彬
Owner 马鞍山市罗泰特机械制造有限公司
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