Fixing device for fatigue test of swing bridge

Abstract

The utility model provides a fixing device for a fatigue test of a swing bridge. The fixing device comprises a supporting seat; the limiting seat is detachably arranged above the supporting seat, and a limiting part used for abutting against the swing bridge is arranged on the limiting seat; the positioning assembly and the limiting seat are arranged on the supporting seat in a spaced mode, and the positioning assembly is detachably arranged; a positioning shaft of the positioning assembly is inserted into a pin hole of the swing bridge, the side, away from the pin hole, of the swing bridge abuts against the limiting part, and therefore the swing bridge is fixed between the limiting base and the positioning shaft. The fixing device for the swing bridge fatigue test solves the technical problems that a swing bridge fatigue test tool of a special structure cannot be accurately positioned and is not firmly fixed in the prior art.

Description

TECHNICAL FIELD

[0001] The utility model relates to fatigue test equipment technical field, concretely relates to a fixed device for swing bridge fatigue test. BACKGROUND

[0002] In the field of trailer vehicle manufacturing, as an important component connecting the tractor and the trailer, the performance of the swing bridge is directly related to the stability and safety of the vehicle in driving. Therefore, fatigue testing of the swing bridge is a necessary link to ensure product quality.

[0003] However, most of the fixtures on the market can only fix swing bridges with single structure, and for swing bridges with special structures of complex geometry, effective fixation is often not achieved. This leads to displacement or loosening of the swing bridge during testing, affecting the reliability of the test results, not only affecting the accuracy of the test, but also possibly causing safety hazards.

[0004] Therefore, the prior art needs to be further developed. INVENTION CONTENTS

[0005] The utility model aims at overcoming the above technical insufficiency, providing a fixed device for swing bridge fatigue test, to solve the technical problems of unable to accurately position and not firm fixation in the related art for swing bridge fatigue test fixture of special structure.

[0006] To achieve the above technical purpose, the utility model adopts the following technical scheme: a fixed device for swing bridge fatigue test is provided, comprising: a support seat; a limiting seat, which is detachably arranged above the support seat, and a limiting part for abutting against the swing bridge is arranged on the limiting seat; a positioning assembly, which is arranged on the support seat in a spaced manner with the limiting seat, and is detachably arranged; the positioning shaft of the positioning assembly is inserted into the pin hole of the swing bridge, and the side of the swing bridge away from the pin hole abuts against the limiting part, so that the swing bridge is fixed between the limiting seat and the positioning shaft.

[0007] Further, the limiting part forms an arc-shaped curved surface structure recessed inward relative to the outer contour of the limiting seat on the surface of the limiting seat, to adapt to the contact surface of the swing bridge.

[0008] Further, the positioning assembly further comprises a positioning plate, which is detachably arranged on the support seat, and the positioning shaft is vertically arranged on the positioning plate.

[0009] Further, the support seat is provided with two first key grooves arranged in cross, the bottom of the limiting seat and the positioning plate is provided with a plurality of first clamping grooves, and the first clamping grooves and the first key grooves are arranged in one-to-one correspondence; the fixed device further comprises a plurality of first flat keys, which are respectively inserted into the matching gaps of the first clamping grooves and the first key grooves, so as to clamp the limiting seat and the positioning plate on the support seat.

[0010] Further, the fixing device further comprises a plurality of first bolts, when the limiting seat and the positioning plate are clamped on the support seat, the plurality of first bolts are respectively screwed with the support seat through the limiting seat, and the plurality of first bolts are respectively screwed with the support seat through the positioning plate, so as to reinforce the limiting seat and the positioning plate.

[0011] Further, the fixing device further comprises a base, the support seat is detachably arranged above the base, and the base is used for improving the fixing height of the swing bridge.

[0012] Further, the base is provided with two second key grooves arranged in cross, the bottom of the support seat is provided with a plurality of second clamping grooves, the second clamping grooves and the second key grooves are arranged in one-to-one correspondence, and the fixing device further comprises a plurality of second flat keys, the plurality of second flat keys are respectively inserted into the matching gaps of the second clamping grooves and the second key grooves, so that the support seat is clamped on the base.

[0013] Further, the bottom of the support seat is provided with a support plate, and the fixing device further comprises a plurality of second bolts, when the support seat is clamped on the base, the plurality of second bolts are respectively screwed with the base through the support plate, so as to reinforce the connection between the support seat and the base.

[0014] Further, the positioning shaft and the positioning plate are detachably connected.

[0015] Further, the fixing device further comprises a pressing gasket and a pressing nut, the pressing gasket and the pressing nut are detachably arranged, the positioning shaft passes through the pin hole, the pressing gasket is sleeved on the positioning shaft, the pressing nut is screwed with the end of the positioning shaft, the swing bridge is pressed and fixed on the positioning assembly by tightening the pressing nut and driving the pressing gasket to apply downward pressure.

[0016] Beneficial effects:

[0017] 1. The fixing device of the utility model, through the limiting part of the limiting seat and the positioning shaft of the positioning assembly, the swing bridge is clamped, so that the swing bridge can realize multi-point support fixing in the fatigue test process, and displacement or loosening phenomenon is avoided.

[0018] 2. The arc-shaped curved surface design of the limiting part can be closely combined with the contact surface of the swing bridge, even if the geometric shape is complex, accurate positioning and firm fixing can also be realized.

[0019] 3. The fixing device is multiple matched through the flat key, the clamping groove, the key groove and the bolt between the support seat and the base, the rigidity and stability of the whole device are ensured, so that the error caused by loosening in the test is eliminated, and the accuracy and repeatability of the test result are improved.

[0020] 4. By setting the detachable base between the support seat and the base, the fixed height of the swing bridge can be adjusted according to the actual test requirements, and the flexibility and practicality of the tooling are enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a perspective view of the fixed device for swing bridge fatigue test adopted by the embodiment of the utility model;

[0022] Figure 2 is another perspective view of the fixed device for swing bridge fatigue test adopted by the embodiment of the utility model;

[0023] Figure 3 is a use state view of the fixed device for swing bridge fatigue test from one perspective adopted by the embodiment of the utility model;

[0024] Figure 4 is a use state view of the fixed device for swing bridge fatigue test from another perspective adopted by the embodiment of the utility model;

[0025] Figure 5 is a partial sectional view of the positioning shaft of the fixed device for swing bridge fatigue test adopted by the embodiment of the utility model.

[0026] Among them, the above-mentioned drawings include the following drawing marks:

[0027] 1, support seat; 11, first key groove; 12, support plate; 2, limiting seat; 21, limiting part; 3, positioning assembly; 31, positioning shaft; 32, positioning plate; 33, fixed pin; 4, swing bridge; 41, pin hole; 51, first clamping groove; 52, second clamping groove; 61, first flat key; 62, second flat key; 71, first bolt; 72, second bolt; 8, base; 81, second key groove; 91, compression gasket; 92, compression nut. DETAILED DESCRIPTION

[0028] In order to make the personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0029] According to the embodiment of the utility model, a kind of fixed device for swing bridge fatigue test is provided, please refer to Figures 1 to 5, comprising: a support seat 1; a limiting seat 2, which is detachably arranged above the support seat 1, and is provided with a limiting portion 21 for abutting against the swing bridge 4; and a positioning assembly 3, which is arranged on the support seat 1 in a spaced manner with the limiting seat 2 and is detachably arranged. The positioning shaft 31 of the positioning assembly 3 is inserted into the pin hole 41 of the swing bridge 4, and the side of the swing bridge 4 away from the pin hole 41 abuts against the limiting portion 21, so that the swing bridge 4 is fixed between the limiting seat 2 and the positioning shaft 31. In use, the swing bridge 4 is hoisted into the limiting seat 2 and the positioning shaft 31 and is well butted, so that the positioning shaft 31 is inserted into the pin hole 41 on one side of the swing bridge 4 and abuts against the limiting portion 21 on the other side, thereby clamping the swing bridge 4 between the limiting seat 2 and the positioning shaft 31. Through the limiting portion 21 of the limiting seat 2 and the positioning shaft 31 of the positioning assembly 3, multi-point support and fixation of the swing bridge 4 are realized, which can effectively prevent the swing bridge 4 from being displaced or loosened during the test. The design of the limiting portion 21 can adapt to swing bridges 4 of different shapes and sizes, especially those with complex geometric shapes. The swing bridge fatigue test fixing device of the embodiment solves the technical problems of inaccurate positioning and insecure fixation of the fatigue test tool for swing bridges with special structures in the related art.

[0030] Referring to Figure 1 and Figure 2 , the swing bridge fatigue test fixing device of the embodiment, the limiting portion 21 forms an arc-shaped curved surface structure that is recessed inward relative to the outer contour of the limiting seat 2 on the surface of the limiting seat 2, so as to adapt to the contact surface of the swing bridge 4. Most of the brake systems of the swing bridge 4 are cylindrical structures, and the arc-shaped curved surface structure can better fit on the contact surface of the swing bridge 4, thereby providing effective support and fixation.

[0031] Referring to Figure 1 and Figure 2 , the swing bridge fatigue test fixing device of the embodiment, the positioning assembly 3 further comprises a positioning plate 32, which is detachably arranged on the support seat 1, and the positioning shaft 31 is vertically arranged on the positioning plate 32. The positioning plate 32 provides a stable support surface for the positioning shaft 31, so that the positioning shaft 31 can be kept vertical and accurately inserted into the pin hole 41 of the swing bridge 4. This design helps to improve the positioning accuracy and ensure the accurate position of the swing bridge during the test. The positioning plate 32 is designed to be detachable, so that the positioning assembly 3 can be conveniently installed and detached.

[0032] Referring to Figure 1 and Figure 2The fixing device for swing bridge fatigue test of the embodiment is provided with two first key grooves 11 arranged in cross on the support base 1, the bottom of the limiting seat 2 and the positioning plate 32 is provided with a plurality of first clamping grooves 51, the first clamping grooves 51 and the first key grooves 11 are correspondingly arranged, and the fixing device further comprises a plurality of first flat keys 61, the plurality of first flat keys 61 are respectively inserted into the matching gaps of the first clamping grooves 51 and the first key grooves 11, so that the limiting seat 2 and the positioning plate 32 are clamped on the support base 1. The limiting seat 2 and the positioning plate 32 are clamped on the support base 1 through the first flat keys 61, and a stable mechanical connection is formed. This connection mode can effectively prevent the limiting seat 2 and the positioning plate 32 from slipping or loosening during the test, thereby improving the connection stability and reliability of the whole fixing device. In addition, the matching design of the first flat keys 61 and the first clamping grooves 51 and the first key grooves 11 makes the installation and disassembly of the limiting seat 2 and the positioning plate 32 simple and fast. Test personnel can easily insert or pull out the first flat keys 61, so as to realize the quick installation and disassembly of the limiting seat 2 and the positioning plate 32. This design not only improves the test efficiency, but also facilitates the maintenance and replacement of the fixing device.

[0033] Referring to Figure 1 The fixing device for swing bridge fatigue test of the embodiment further comprises a plurality of first bolts 71, when the limiting seat 2 and the positioning plate 32 are clamped on the support base 1, the plurality of first bolts 71 are respectively screwed through the limiting seat 2 and the support base 1, and the plurality of first bolts 71 are respectively screwed through the positioning plate 32 and the support base 1, so as to reinforce the limiting seat 2 and the positioning plate 32. After the limiting seat 2 and the positioning plate 32 are clamped on the support base 1, the first bolts 71 are screwed through the limiting seat 2, the positioning plate 32 and the support base 1, and the reinforced limiting seat 2 and the positioning plate 32 can more reliably fix the swing bridge 4, preventing accidental movement or falling of the swing bridge 4 during the test.

[0034] Referring to Figure 3 and Figure 4 The fixing device for swing bridge fatigue test of the embodiment further comprises a base 8, the support base 1 is detachably arranged above the base 8, and the base 8 is used to improve the fixing height of the swing bridge 4. The main function of the base 8 is to improve the fixing height of the swing bridge 4, so that it reaches the required position for the test. This helps to ensure that the swing bridge can be in the correct position and height during the test, thereby meeting the test standards and requirements.

[0035] In the embodiment, the positioning assembly 3 and the limiting seat 2 are detachable, or the positioning assembly 3 and the limiting seat 2 are fixed on the base 8, and the support base 1 is used to adjust the fixing height of the swing bridge 4, which is flexible and variable.

[0036] Referring to Figure 1The fixed device for swing bridge fatigue test of the embodiment is provided with two second key grooves 81 arranged in cross on the base 8, the bottom of the support seat 1 is provided with a plurality of second clamping grooves 52, and the second clamping grooves 52 and the second key grooves 81 are arranged in one-to-one correspondence; the fixed device further comprises a plurality of second flat keys 62, the plurality of second flat keys 62 are respectively inserted into the matching gaps of the second clamping grooves 52 and the second key grooves 81, so that the support seat 1 is clamped on the base 8. The matching design of the second flat keys 62, the second clamping grooves 52 and the second key grooves 81 makes the installation and dismounting of the support seat 1 simple and fast.

[0037] Referring to Figure 1 The fixed device for swing bridge fatigue test of the embodiment is provided with two second key grooves 81 arranged in cross on the base 8, the bottom of the support seat 1 is provided with a plurality of second clamping grooves 52, and the second clamping grooves 52 and the second key grooves 81 are arranged in one-to-one correspondence; the fixed device further comprises a plurality of second flat keys 62, the plurality of second flat keys 62 are respectively inserted into the matching gaps of the second clamping grooves 52 and the second key grooves 81, so that the support seat 1 is clamped on the base 8. The matching design of the second flat keys 62, the second clamping grooves 52 and the second key grooves 81 makes the installation and dismounting of the support seat 1 simple and fast.

[0038] Referring to Figure 1 The fixed device for swing bridge fatigue test of the embodiment is provided with two second key grooves 81 arranged in cross on the base 8, the bottom of the support seat 1 is provided with a plurality of second clamping grooves 52, and the second clamping grooves 52 and the second key grooves 81 are arranged in one-to-one correspondence; the fixed device further comprises a plurality of second flat keys 62, the plurality of second flat keys 62 are respectively inserted into the matching gaps of the second clamping grooves 52 and the second key grooves 81, so that the support seat 1 is clamped on the base 8. The matching design of the second flat keys 62, the second clamping grooves 52 and the second key grooves 81 makes the installation and dismounting of the support seat 1 simple and fast.

[0039] Referring to Figure 5 The fixed device for swing bridge fatigue test of the embodiment is provided with two second key grooves 81 arranged in cross on the base 8, the bottom of the support seat 1 is provided with a plurality of second clamping grooves 52, and the second clamping grooves 52 and the second key grooves 81 are arranged in one-to-one correspondence; the fixed device further comprises a plurality of second flat keys 62, the plurality of second flat keys 62 are respectively inserted into the matching gaps of the second clamping grooves 52 and the second key grooves 81, so that the support seat 1 is clamped on the base 8. The matching design of the second flat keys 62, the second clamping grooves 52 and the second key grooves 81 makes the installation and dismounting of the support seat 1 simple and fast.

[0040] It should be noted that the terms "first", "second" and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a specific sequential or chronological order. It is to be understood that the data used in the description and the claims of the present application is presented by way of example only and that the application can be implemented in any other form without departing from the spirit or the scope of the application. Furthermore, the terms "comprise", "comprising", "include", "including", and the like used in the present description are preferably intended to cover a non-exclusive inclusion, such that processes, methods, articles, or apparatuses that comprise, include, or the like, a list of elements, do not include only those elements but can include other elements not expressly listed or inherent to such processes, methods, articles, or apparatuses.

[0041] Optionally, the specific examples in the embodiments can refer to the examples described in the above embodiments, and the embodiments will not be described here again.

[0042] The serial numbers of the above embodiments of the present application are only for description, not representing the advantages and disadvantages of the embodiments.

[0043] In the above embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0044] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A fixture for fatigue testing of a swing bridge, characterized in that The utility model relates to a fixing device for swing bridge, including: Support seat (1); Limiting seat (2) detachably set up in the upper of support seat (1), be provided with limiting portion (21) for abutting swing bridge (4) on limiting seat (2); Positioning assembly (3) interval setting with limiting seat (2) on support seat (1), positioning assembly (3) detachably set up;The positioning shaft (31) of positioning assembly (3) inserts the pin hole (41) of swing bridge (4), the side of swing bridge (4) away from pin hole (41) abuts on limiting portion (21), thereby with swing bridge (4) is fixed between limiting seat (2) and positioning shaft (31).

2. The swing bridge fatigue test fixture of claim 1, wherein, The limiting portion (21) is recessed inwardly relative to the outer contour of the limiting seat (2) on the surface of the limiting seat (2) to form an arc-shaped curved surface structure, so as to adapt to the contact surface of the swing bridge (4).

3. The swing bridge fatigue test fixture of claim 2, wherein, The positioning assembly (3) further comprises a positioning plate (32), the positioning plate (32) is detachably arranged on the support seat (1), and the positioning shaft (31) is vertically arranged on the positioning plate (32).

4. The swing bridge fatigue test fixture of claim 3, wherein, The support seat (1) is provided with two first key grooves (11) arranged in cross, the bottom of the limiting seat (2) and the positioning plate (32) is provided with a plurality of first clamping grooves (51), and the first clamping grooves (51) and the first key grooves (11) are arranged one by one. The fixing device further comprises a plurality of first flat keys (61), and the first flat keys (61) are respectively inserted into the matching gaps of the first clamping grooves (51) and the first key grooves (11), so that the limiting seat (2) and the positioning plate (32) are clamped on the support seat (1).

5. The swing bridge fatigue test fixture of claim 4, wherein, The fixing device further comprises a plurality of first bolts (71), when the limiting seat (2) and the positioning plate (32) are clamped on the support seat (1), the first bolts (71) are respectively screwed with the support seat (1) through the limiting seat (2), and the first bolts (71) are respectively screwed with the support seat (1) through the positioning plate (32), so as to reinforce the limiting seat (2) and the positioning plate (32).

6. The swing bridge fatigue testing fixture of claim 1, wherein, The fixing device further comprises a base (8), and the support seat (1) is detachably arranged above the base (8), and the base (8) is used for increasing the fixing height of the swing bridge (4).

7. The swing bridge fatigue test fixture of claim 6, wherein, The base (8) is provided with two second key grooves (81) arranged in cross, and the bottom of the support seat (1) is provided with a plurality of second clamping grooves (52), and the second clamping grooves (52) and the second key grooves (81) are arranged one by one. The fixing device further comprises a plurality of second flat keys (62), and the second flat keys (62) are respectively inserted into the matching gaps of the second clamping grooves (52) and the second key grooves (81), so that the support seat (1) is clamped on the base (8).

8. The swing bridge fatigue testing fixture of claim 7, wherein, The bottom of the support seat (1) is provided with a support plate (12), and the fixing device further comprises a plurality of second bolts (72), which are respectively screwed with the base (8) through the support plate (12) when the support seat (1) is clamped on the base (8), so as to reinforce the connection between the support seat (1) and the base (8).

9. The swing bridge fatigue testing fixture of claim 3, wherein, The positioning shaft (31) is detachably connected with the positioning plate (32).

10. The swing bridge fatigue testing fixture of claim 1, wherein, The fixing device further comprises a pressing gasket (91) and a pressing nut (92), which are detachably arranged, the positioning shaft (31) passes through the pin hole (41), the pressing gasket (91) is sleeved on the positioning shaft (31), and the pressing nut (92) is screwed with the end of the positioning shaft (31); by tightening the pressing nut (92), the pressing gasket (91) is driven to apply pressure downward, so that the swing bridge (4) is pressed and fixed on the positioning assembly (3).

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