Height-adjustable stretcher

Abstract

The utility model relates to the technical field of bolt tensioners, and discloses a height-adjustable tensioner which comprises a tensioner body, the tensioner body comprises a bridge frame, a hydraulic oil pipe joint is installed on the outer side of the bridge frame, and a tensioning column is inserted into one side of the top of the bridge frame; a base sleeves the outer side of the bridge, and a limiting assembly is arranged on one side of the base; annular sliding rails are fixed to the outer sides of the bridges, annular sliding blocks are slidably connected to the inner sides of rail grooves of the annular sliding rails, and baffles are fixed to the outer sides of the annular sliding blocks. The limiting assembly comprises two fixing frames, sliding grooves are formed in the inner sides of the fixing frames, the height of the tensioner body can be easily adjusted by pulling the handle, the tensioner body is automatically locked at the needed position under the action of the spring, and the height of the tensioner body is allowed to be adjusted according to different insertion positions of the bridge on the base. The stretcher body can adapt to stretching of bolts with different sizes and different intervals, stretcher bodies with different heights do not need to be prepared for each condition, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt stretcher technical field, specifically is a height adjustable stretcher. BACKGROUND

[0002] Bolt stretcher is the short name of bolt hydraulic stretcher, hydraulic stretcher, it is with the hydraulic source provided by hydraulic pressure booster pump, according to the tensile strength, yield coefficient and elongation of material determine the stretching force, utilize the stretching force generated by superhigh pressure oil pump, make the bolt under the elastic deformation zone of the force exerted be lengthened, bolt diameter slightly deformed, so that the nut is easy to loosen, in addition, it can also be used as the device of hydraulic interference connection and exert axial force, carries out top pressure installation.

[0003] Traditional stretcher often exists height not adjustable or inconvenient problem, this leads to in actual operation, when facing different size, different pitch bolt, often need to prepare multiple different height stretcher, reduce the working efficiency of stretcher, for this, propose a height adjustable stretcher. UTILITY MODEL CONTENTS

[0004] The utility model discloses a height adjustable stretcher to solve the problem in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a height adjustable stretcher, including stretcher body, the stretcher body includes bridge, the bridge outside is equipped with hydraulic oil pipe joint, and the bridge top side inserts the stretching column;

[0006] The bridge outside is sleeved with base, and the base one side is equipped with limit component;

[0007] The bridge outside is fixed with annular slide rail, the annular slide rail track groove inner side is slidably connected with annular slide block, and the annular slide block outside is fixed with baffle;

[0008] The limit component includes two fixed frames, the fixed frame inner side is equipped with sliding slot, the sliding slot inner side is slidably connected with sliding plate, the sliding plate one side is fixed with pull rod, and the sliding plate other side is fixed with lock plate.

[0009] As preferred, the base one side is equipped with first through hole, and the bridge one side is equipped with second through hole located first through hole one side.

[0010] As preferred, the bridge inner wall both sides are equipped with a plurality of lock slots, when the lock plate inserts in the lock slot inner side, the bridge is in fixed state, when the lock plate leaves the lock slot inner side, the bridge is in height adjustment state.

[0011] As preferred, a spring is sleeved on the outer side of the pull rod, and two ends of the spring are connected to the sliding groove and one side of the sliding plate respectively.

[0012] As preferred, the outer side of the pull rod is movably penetrated into one side of the fixed frame, and one end of the pull rod is fixed with a handle.

[0013] As preferred, one side of the two fixed frames is fixed to the outer side of the base.

[0014] As preferred, the outer side of the lock plate is movably penetrated into the inner side wall of the base, and the lock plate is in the shape of a cuboid.

[0015] Compared with the prior art, the above technical scheme has the following technical effects:

[0016] I. The height of the stretcher body can be easily adjusted by pulling the handle, and is automatically locked at the required position under the action of the spring, allowing the height of the stretcher body to be adjusted according to different insertion positions of the bridge on the base, so that the stretcher body can adapt to bolts of different sizes and different spacings, without the need to prepare different height stretcher bodies for each situation, thereby improving the working efficiency of the stretcher body.

[0017] II. The space between the stretcher body and the worker is shielded by rotating the baffle, and the introduction of the baffle provides an additional safety barrier for the worker. During the bolt stretching process, if the bolt is accidentally broken or flies out, the baffle can effectively block these splashes, thereby significantly reducing the risk of injury to the worker. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is a first perspective structural schematic view of the utility model;

[0020] Figure 2 It is a second perspective structural schematic view of the utility model;

[0021] Figure 3 It is a third perspective structural schematic view of the utility model;

[0022] Figure 4 It is a top view structural schematic view of the utility model;

[0023] Figure 5 It is a base main view structural schematic view of the utility model;

[0024] Figure 6 It is the main view cross section structure schematic diagram of the utility model's slide plate.

[0025] Mark explanation: 1, stretcher body, 2, limiting component, 21, fixed frame, 22, handle, 23, sliding slot, 24, slide plate, 25, lock plate, 26, lock slot, 27, pull rod, 28, spring, 3, base, 4, first through hole, 5, second through hole, 6, bridge, 7, annular slide rail, 8, baffle, 9, stretching column, 10, hydraulic oil pipe joint, 11, annular slide block. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] It should be understood that the structure, proportion, size and the like shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification for understanding and reading by those skilled in the art, and are not used to limit the limiting conditions of the embodiments of the application, so they do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that can be achieved by the application, should still fall within the scope of the technical content disclosed by the application.

[0028] EMBODIMENT

[0029] Please refer to Figures 1-6 The utility model provides a kind of technical scheme: a height-adjustable stretcher, including stretcher body 1, stretcher body 1 includes bridge 6, hydraulic oil pipe joint 10 is installed on the outside of bridge 6, connect hydraulic oil pipe joint 10 with hydraulic pump by high-pressure hose, at this time, according to corresponding bolt tensile force, so that hydraulic oil enters inside stretcher body 1, bridge 6 top side inserts stretching column 9;Bridge 6 outside is sleeved with base 3, one side of base 3 is equipped with limiting component 2, first through hole 4 is provided in one side of base 3, second through hole 5 is provided in one side of bridge 6, located in the side of first through hole 4;

[0030] The bridge 6 is fixed with an annular slide rail 7 outside, the annular slide rail 7 is slidably connected with an annular slide block 11 inside the track groove, the rotating baffle 8 drives the annular slide block 11 to slide in the track groove of the annular slide rail 7, so that the baffle 8 blocks between the stretcher body 1 and the worker, the annular slide block 11 is fixed with the baffle 8 outside, the baffle 8 is rotated to block the space between the stretcher body 1 and the worker, the introduction of the baffle 8 provides an additional safety barrier for the worker;

[0031] The limiting assembly 2 includes two fixed frames 21, the fixed frame 21 is provided with a sliding groove 23 inside, the sliding groove 23 is slidably connected with a sliding plate 24 inside, the sliding plate 24 is fixed with a pull rod 27 on one side, the sliding plate 24 is fixed with a lock plate 25 on the other side, the material of the sliding plate 24 and the lock plate 25 can be high-strength steel or copper alloy, so that the lock plate 25 has high yield strength and tensile strength, and can withstand large tensile force, the inner wall of the bridge 6 is provided with a plurality of lock grooves 26 on both sides, when the lock plate 25 is inserted into the lock groove 26, the bridge 6 is in a fixed state, when the lock plate 25 is away from the inside of the lock groove 26, the bridge 6 is in a height adjustment state.

[0032] The pull rod 27 is sleeved with a spring 28 outside, the two ends of the spring 28 are respectively connected to the sliding groove 23 and one side of the sliding plate 24, respectively pulling the handle 22 to one side, so that the handle 22 drives the pull rod 27, the sliding plate 24 and the lock plate 25 to move to one side, at this time the sliding plate 24 slides in the sliding groove 23, the outer side of the pull rod 27 movably penetrates one side of the fixed frame 21, the pull rod 27 is fixed with the handle 22 on one end, one side of the two fixed frames 21 is fixed to the outside of the base 3, the outer side of the lock plate 25 movably penetrates the inner wall of the base 3, the shape of the lock plate 25 is a cuboid, the sliding plate 24 compresses the spring 28, according to the different positions of the bridge 6 inserted into the base 3, at this time the pulling force of the pull rod 27 is released, at this time the lock plate 25 is inserted into the lock groove 26 under the elastic force of the spring 28, according to this method, the lock plate 25 can be inserted into different lock grooves 26, at this time the height of the stretcher body 1 can be adjusted.

[0033] The stretcher body 1 is a bolt stretcher, the model of the stretcher body 1 is HTB4, since the internal structure and operation principle of the stretcher body 1 of this model are prior art, they will not be described here.

[0034] Working principle: when the stretcher body 1 is needed to stretch the bolt, at this time the hydraulic oil pipe joint 10 is connected with the hydraulic pump through the high-pressure hose, at this time according to the corresponding bolt stretching force, the hydraulic oil enters the inside of the stretcher body 1, at this time the piston in the inside of the stretcher body 1 pushes the stretching column 9 connected with the bolt screw to move upwards, when the set pressure is reached, the hydraulic pump stops delivering hydraulic oil, at this time the nut outside the bolt is rotated through the second through hole 5, the stretching of the bolt is completed.

[0035] When a plurality of bolts need to be stretched using a stretcher body 1, only need to insert the bridge 6 into the base 3, so that the first through hole 4 is located on one side of the second through hole 5, then pull the handle 22 to one side respectively, so that the handle 22 drives the pull rod 27, the sliding plate 24 and the lock plate 25 to move to one side, at this time the sliding plate 24 slides in the sliding groove 23, and the spring 28 is compressed by the sliding plate 24, according to the different positions of the bridge 6 inserted into the base 3, at this time the pulling force of the handle 22 is released, at this time the lock plate 25 is pushed into the lock slot 26 under the elastic force of the spring 28, according to this method, the lock plate 25 can be inserted into different lock slots 26, at this time the height of the stretcher body 1 can be adjusted;

[0036] When the bolt is used with the stretcher body 1, only need to rotate the baffle 8, so that the baffle 8 drives the annular sliding block 11 to slide in the track groove of the annular sliding rail 7, so that the baffle 8 blocks between the stretcher body 1 and the worker, avoiding the bolt from flying out and causing the worker to be injured when the bolt is stretched.

[0037] In summary, the height of the stretcher body 1 can be easily adjusted by pulling the handle 22, and is automatically locked in the required position under the action of the spring 28, allowing the height of the stretcher body 1 to be adjusted according to the different insertion positions of the bridge 6 on the base 3, so that the stretcher body 1 can adapt to the stretching of bolts of different sizes and different spacings, without the need to prepare different height stretcher bodies 1 for each situation, improving the work efficiency.

[0038] The space between the stretcher body 1 and the worker is blocked by rotating the baffle 8, which provides an additional safety barrier for the worker, and if the bolt is accidentally broken or flies out during the bolt stretching process, the baffle 8 can effectively block these splashes, thereby significantly reducing the risk of injury to the worker.

[0039] Those skilled in the art can understand that the features described in various embodiments and / or claims of the present application can be combined or / and combined, even if such combinations or combinations are not explicitly described in the present application. In particular, the features described in various embodiments and / or claims of the present application can be combined and / or combined without departing from the spirit and teachings of the present application. All these combinations and / or combinations fall within the scope of the present application.

Claims

1. A height-adjustable tensioner, comprising a tensioner body (1), characterized in that: The tensioner body (1) includes a bridge (6), a hydraulic oil pipe joint (10) is installed on the outside of the bridge (6), and a tensioning column (9) is inserted into one side of the top of the bridge (6). The cable tray (6) is fitted with a base (3) on the outside, and a limiting component (2) is provided on one side of the base (3); The cable tray (6) is fixed with an annular slide rail (7) on the outside. An annular slider (11) is slidably connected to the inner side of the track groove of the annular slide rail (7). A baffle (8) is fixed to the outside of the annular slider (11). The limiting component (2) includes two fixing frames (21). The fixing frame (21) has a sliding groove (23) on its inner side. A sliding plate (24) is slidably connected to the inner side of the sliding groove (23). A pull rod (27) is fixed on one side of the sliding plate (24), and a locking plate (25) is fixed on the other side of the sliding plate (24).

2. The height-adjustable tensioner according to claim 1, characterized in that: The base (3) has a first through hole (4) on one side, and the bridge (6) has a second through hole (5) on one side of the first through hole (4).

3. The height-adjustable tensioner according to claim 1, characterized in that: The cable tray (6) has several locking slots (26) on both sides of its inner wall. When the locking plate (25) is inserted into the inner side of the locking slot (26), the cable tray (6) is in a fixed state. When the locking plate (25) leaves the inner side of the locking slot (26), the cable tray (6) is in a height adjustment state.

4. The height-adjustable tensioner according to claim 3, characterized in that: A spring (28) is sleeved on the outside of the pull rod (27), and the two ends of the spring (28) are respectively connected to one side of the slide groove (23) and the slide plate (24).

5. The height-adjustable tensioner according to claim 4, characterized in that: The outer side of the pull rod (27) extends through one side of the fixing frame (21), and a handle (22) is fixed to one end of the pull rod (27).

6. The height-adjustable tensioner according to claim 5, characterized in that: One side of each of the two mounting brackets (21) is fixed to the outside of the base (3).

7. A height-adjustable tensioner according to claim 6, characterized in that: The outer side of the locking plate (25) extends through the inner wall of the base (3), and the locking plate (25) is rectangular.

Images