Torsion spring detecting and positioning tool

Abstract

The utility model relates to the field of torsional spring detection, in particular to a torsional spring detection positioning tool. The torsion spring detecting and positioning tool comprises a positioning shaft, a first limiting part and a second limiting part. The positioning shaft is used for sleeving and positioning the torsion spring, and the first limiting part is convexly arranged relative to the peripheral surface of the positioning shaft and is used for limiting and fixing a group of torsion arms of the torsion spring sleeving the positioning shaft; the second limiting part is detachably arranged relative to the positioning shaft and used for abutting against the other set of torsion arms of the torsion spring, and the second limiting part is matched with the first limiting part and the positioning shaft to twist the torsion spring and keep the torsion spring at a preset torsion angle. According to the torsion spring detection positioning tool, the convenience of installation and fixation of the torsion spring is improved, the torsion spring can be kept at the torsion angle corresponding to the working state and is immersed in high-temperature oil, and the torsion spring detection efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of torsion spring detection, and in particular to a torsion spring detection and positioning tool. Background Art

[0002] The gearbox is an important part of the automobile transmission system. It is a mechanism used to change the speed and torque from the engine. The gearbox contains torsion springs. In order to ensure the reliability of the automobile gearbox, the performance of the torsion springs needs to be tested.

[0003] At present, the high temperature oil resistance test of torsion springs requires the torsion springs to be assembled into the automobile gearbox, and then the whole machine is tested or road tested together with other parts in the gearbox. Because the gearbox is used for testing, the assembly is carried out simultaneously. Once a failure occurs, it is difficult to determine whether the torsion spring or other parts in the gearbox have problems. Each time the torsion spring and a series of matching parts need to be assembled in the gearbox, the installation is difficult and the detection efficiency is low. Utility Model Content

[0004] The present application provides a torsion spring detection and positioning tool, which improves the convenience of torsion spring installation and fixation, and can simulate the operating environment and state of the torsion spring in a gearbox, thereby improving detection efficiency.

[0005] To achieve the above objectives, the present application provides a torsion spring detection and positioning tool, comprising:

[0006] Positioning shaft, for the torsion spring to be sleeved and positioned;

[0007] A first limiting portion is convexly arranged relative to the outer peripheral surface of the positioning shaft and is used to limit and fix a group of torsion arms of the torsion spring;

[0008] The second limiting portion is detachably arranged relative to the positioning shaft and is used to abut against another set of torsion arms of the torsion spring. The second limiting portion cooperates with the first limiting portion and the positioning shaft to twist the torsion spring and maintain it at a preset torsion angle.

[0009] In some embodiments, the second limiting portion includes a fixed plate vertically connected to the positioning axis, and a limiting pressure plate vertically connected to the fixed plate; when the limiting pressure plate is fixed to the fixed plate along an axial direction parallel to the positioning axis, the limiting pressure plate squeezes another set of torsion arms of the torsion spring and drives the torsion spring to twist to a preset torsion angle.

[0010] In some embodiments, the positioning shafts are arranged in multiple groups parallel to each other, and the minimum distance between the limiting surface of the limiting pressure plate used to abut against the torsion arm of the torsion spring and the outer peripheral surface of any positioning shaft is equal.

[0011] In some embodiments, one of the fixing plate and the limiting pressure plate is provided with a positioning boss, and the other is provided with a positioning groove adapted to the positioning boss.

[0012] In some embodiments, a first fastener is further included to fix the limiting pressure plate and the fixing plate.

[0013] In some embodiments, the fixing plates are provided in pair, and the pair of fixing plates are respectively provided at two ends of the positioning shaft.

[0014] In some embodiments, the fixing plate is provided with a waist-shaped hole, and the end of the positioning shaft is provided with a plug-in end adapted to the waist-shaped hole.

[0015] In some embodiments, the fixing plate is provided with a first fastening hole extending through the waist-shaped hole, and further comprises a first clamping member penetrating through the first fastening hole and abutting against the plug-in end.

[0016] In some embodiments, the positioning shaft has a pin hole along its radial direction, and the first limiting portion is a limiting pin that is inserted and fixed through the pin hole.

[0017] In some embodiments, the pin holes are arranged in multiple groups along the axial direction of the positioning shaft.

[0018] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art: when it is necessary to test the high-temperature oil resistance performance of the torsion spring, the torsion spring to be tested can be sleeved on the positioning shaft for preliminary positioning, and a group of torsion arms of the torsion spring can be limited and fixed by means of the first limiting portion convexly arranged on the outer peripheral surface of the positioning shaft; then the second limiting portion is installed and fixed relative to the limiting shaft, and the other group of torsion arms of the torsion spring are squeezed by means of the second limiting portion, and the limiting effect of the positioning shaft and the first limiting portion is cooperated to drive the torsion spring to twist and maintain it at a preset torsion angle, such as the torsion angle when working in the engine gearbox, and finally the torsion spring is placed in the high-temperature oil tank together with the detection and positioning tool and immersed in the high-temperature oil. The torsion spring detection and positioning tool is convenient for the installation and positioning of the torsion spring, and multiple torsion springs can be twisted and fixed at one time as needed, which significantly improves the detection efficiency of the torsion spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0022] Figure 1 A working principle diagram of the torsion spring detection and positioning tooling provided in an embodiment of the present application;

[0023] Figure 2 It is a schematic diagram of twisting a torsion spring to a preset twist angle.

[0024] Description of reference numerals:

[0025] 10-positioning shaft; 11-limiting pin; 12-fixing plate; 13-limiting pressure plate; 14-first fastening member; 15-first clamping member. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0027] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0028] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0029] In order to solve the technical problem of low efficiency in high-temperature oil resistance testing of torsion springs in the prior art, the present application provides a torsion spring detection and positioning tool to improve the convenience of torsion spring installation and positioning, facilitate the torsion spring to be twisted and maintained at a preset angle and immersed in high-temperature oil for testing, thereby improving the torsion spring detection efficiency.

[0030] like Figure 1 As shown, the embodiment of the present application provides a torsion spring detection and positioning tool, which includes a positioning shaft 10, a first limiting part and a second limiting part. The first limiting part is arranged at a preset position in the axial direction of the positioning shaft 10, and is protruded relative to the outer peripheral surface of the positioning shaft 10; the second limiting part is detachably arranged relative to the positioning shaft 10. Among them, the positioning shaft 10 can be sleeved with the torsion spring to be detected, and the torsion spring slides along the positioning shaft 10 after being sleeved on the positioning shaft 10 until the torsion arm at the first end of the torsion spring hooks or abuts the first limiting part, and a group of torsion arms of the torsion spring are limited and fixed by means of the first limiting part. Then the second limiting part is installed and fixed relative to the positioning shaft 10, and the torsion arm at the second end of the torsion spring is squeezed during the installation of the second limiting part. Due to the limiting effect of the first limiting part and the positioning shaft 10, the torsion spring is twisted. After the second limiting part is installed in place, the torsion arms at both ends of the torsion spring are squeezed to maintain a preset torsion angle, and the preset torsion angle is equal to the torsion angle of the torsion spring when it works in the gearbox.

[0031] When installing and positioning the torsion spring, the above-mentioned torsion spring detection and positioning tool only needs to put the torsion spring on the positioning shaft 10 and slide it along the positioning shaft 10 until a group of torsion arms are fixed to the first limit part, and then the second limit part is fixed to the positioning shaft 10 and the other group of torsion arms of the torsion spring are squeezed, so that the installation and positioning of the torsion spring are convenient and the installation and positioning efficiency of the torsion spring is improved; and the torsion spring detection and positioning tool can be provided with multiple first limit parts and second limit parts as needed to cooperate to realize the installation and positioning of multiple torsion springs, thereby further improving the detection efficiency of the torsion spring.

[0032] The first limiting portion can generally present a columnar protrusion for the torsion arm of the torsion spring to hook, and the second limiting portion can present a columnar structure fixed relative to the positioning shaft 10, or can be set to include a plate-like extrusion structure parallel to and fixedly arranged relative to the positioning shaft 10, and the plate-like extrusion structure can be used to achieve synchronous abutment of the torsion arms of multiple torsion springs. This application does not limit this, and the working principle of the torsion spring detection and positioning tooling will be described below in combination with different embodiments.

[0033] Further reading Figure 1 The first limiting part adopts a pin structure protruding from the outer peripheral surface of the positioning shaft 10, which is convenient for a group of torsion arms of the torsion spring to be hooked and fixed. In particular, multiple groups of the first limiting parts can be provided, and in order to prevent the first limiting part from affecting the sliding sleeve connection of the torsion spring along the positioning shaft 10, the first limiting part can be provided as a detachable structure relative to the positioning shaft 10.

[0034] Exemplarily, the first limiting portion adopts a limiting pin 11, and the positioning shaft 10 has a pin hole along its radial direction, and the limiting pin 11 is plugged and fixed to the positioning shaft 10 through the pin hole. When installing the torsion spring, first sleeve the torsion spring on the positioning shaft 10 and slide along the positioning shaft 10. After sliding to the corresponding position, the limiting pin 11 is inserted into the pin hole to achieve a set of torsion arm limiting fixation of the torsion spring. Multiple groups of pin holes can be opened along the axial direction of the positioning shaft 10 at a set spacing. The set spacing meets the axial sleeve installation and positioning requirements of the torsion spring, so that a group of positioning shafts 10 can be sleeved by multiple torsion springs. The first limiting portion adopts a pluggable limiting pin 11 that does not affect the sliding sleeve of the torsion spring along the positioning shaft 10, so that multiple torsion springs can be sleeved and positioned on the positioning shaft 10.

[0035] In this embodiment, the second limiting portion includes a fixing plate 12 and a limiting pressure plate 13. The fixing plate 12 is vertically connected to the positioning shaft 10, and the limiting pressure plate 13 is vertically arranged on the fixing plate 12, that is, the limiting pressure plate 13 is parallel to the positioning shaft 10. After the second limiting portion is fixed to the positioning shaft 10, that is, after the limiting pressure plate 13 is fixed relative to the positioning shaft 10 through the fixing plate 12, the limiting pressure plate 13 is at a preset distance from the surface of the positioning shaft 10, so that the limiting pressure plate 13 squeezes another set of torsion arms of the torsion spring to keep the torsion spring at a preset torsion angle. The state of the torsion spring before and after being squeezed and twisted is shown in FIG. Figure 2As shown. During the installation of the limiting pressure plate 13, when the limiting pressure plate 13 just contacts the other set of torsion arms of the torsion spring, the limiting pressure plate 13 is still a certain distance away from the fixed plate 12, and the distance from the positioning shaft 10 is greater than the above-mentioned preset distance. The operator presses the limiting pressure plate 13 toward the fixed plate 12 and the positioning shaft 10, so that the limiting pressure plate 13 squeezes the other set of torsion arms of the torsion spring and drives the torsion spring to twist. After the limiting pressure plate 13 is installed in place relative to the fixed plate 12 and the positioning shaft 10, it cooperates with the first limiting portion and the positioning shaft 10 to twist the torsion spring and maintain it at the preset torsion angle.

[0036] Specifically, multiple groups of fixing plates 12 can be provided, and all the fixing plates 12 are parallel to each other and vertically connected to the positioning shaft 10. With the help of multiple groups of fixing plates 12, the reliability of fixing the limiting pressure plate 13 is improved, thereby keeping the limiting pressure plate 13 and the positioning shaft 10 parallel to each other, ensuring that the limiting surface of the limiting pressure plate 13 used to abut against the torsion arm of the torsion spring is at an equal distance from the positioning shaft 10. Figure 1 As shown, two sets of fixing plates 12 are vertically connected to the two ends of the positioning shaft 10 , and the limiting pressure plates 13 are respectively connected to the fixing plates 12 at the two ends of the positioning shaft 10 to achieve fixation relative to the positioning shaft 10 .

[0037] When testing the torsion spring, the fixing plate 12 and the limiting pressure plate 13 are both in a state of being detached from the positioning shaft 10. The torsion spring is sleeved on the positioning shaft 10 and a group of torsion arms of the torsion spring are fixed by the limiting pin 11. The operation is repeated until multiple torsion springs are fixed to the positioning shaft 10 in the same direction, so that a group of torsion arms of multiple torsion springs that are not fixed by the limiting pin 11 are in the same extension direction; then a pair of fixing plates 12 are respectively fixed to the two ends of the positioning shaft 10, and then the limiting pressure plate 13 is installed and fixed through the fixing plate 12. In the process of the limiting pressure plate 13 being fitted toward the fixing plate 12, the torsion arms of the torsion spring that are not fixed by the limiting pin 11 are squeezed and driven to twist; when the limiting pressure plate 13 is fitted and fixed to the fixing plate 12, the torsion spring is twisted and maintained at a preset torsion angle by squeezing the torsion arms by the limiting pressure plate 13 and cooperating with the limiting effect of the limiting pin 11 and the positioning shaft 10 on the torsion spring.

[0038] The preset torsion angle can be adjusted according to the working state of different torsion springs, and the distance between the limit pressure plate 13 and the surface of the positioning shaft 10 can be changed by replacing the fixing plate 12 of different sizes. The preset torsion angle can also be adjusted by changing the pin hole, that is, the installation position of the limit pin 11 in the circumferential direction of the positioning shaft 10 to cooperate with the limit pressure plate 13.

[0039] In some embodiments, a plurality of positioning shafts 10 may be disposed between a pair of fixing plates 12, and the plurality of positioning shafts 10 are fixed parallel to each other between the pair of fixing plates 12. After the fixing plates 12 and the limiting pressure plates 13 are installed in place, the minimum distances from the outer circumferences of all positioning shafts 10 to the limiting surfaces of the limiting pressure plates 13 are equal. Figure 1In the embodiment shown, two groups of positioning shafts 10 are provided, and each group of positioning shafts 10 is provided with three limit pins 11. In this way, the detection and positioning tool can simultaneously realize the installation and positioning of six torsion springs. In specific implementation, the number of positioning shafts 10 and the number of limit pins 11 on each positioning shaft 10 can be adjusted as needed, so as to realize the installation and positioning of multiple torsion springs at one time, thereby improving the detection efficiency of torsion springs.

[0040] In order to facilitate the connection between the fixing plate 12 and the positioning shaft 10 and improve the efficiency of the installation, fixing and removal of the torsion spring, the fixing plate 12 and the positioning shaft 10 are preferably fixed by plugging. For example, a hole is opened at a corresponding position on the fixing plate 12, and the end of the positioning shaft 10 is vertically plugged into the opening of the fixing plate 12. In order to prevent the positioning shaft 10 from rotating relative to the fixing plate 12, resulting in a change in the torsion angle of the torsion spring, the opening on the fixing plate 12 can be set as a flat waist-shaped hole, and the plug-in end of the positioning shaft 10 presents a flat shape that matches the waist-shaped hole.

[0041] Furthermore, in order to prevent the plug-in end of the positioning shaft 10 from escaping from the waist-shaped hole of the fixing plate 12, the fixing plate 12 is also provided with a first fastening hole that passes through the waist-shaped hole, and a first clamping piece is connected to the first fastening hole. The first clamping piece is used to vertically abut the plug-in end of the positioning shaft 10, so that the plug-in end of the positioning shaft 10 is firmly fixed in the waist-shaped hole of the fixing plate 12.

[0042] It is understandable that the openings of the plug-in end and the fixing plate 12 may also be configured as other shapes that prevent rotation, such as a triangle, a regular polygon or other irregular shapes.

[0043] In order to facilitate the installation and alignment of the fixing plate 12 and the limiting pressing plate 13, the two are connected and positioned by mutually matching positioning bosses and positioning grooves. The positioning bosses can be arranged on the fixing plate 12 or on the limiting pressing plate 13. Figure 1 In the embodiment shown, the positioning boss is provided at the bottom of the fixed plate 12, and the two ends of the limiting pressure plate 13 are provided with positioning grooves adapted to the positioning boss, and the connection and positioning of the fixed plate 12 and the limiting pressure plate 13 are realized by the cooperation of the positioning boss and the positioning groove. At the same time, in order to improve the connection strength between the fixed plate 12 and the limiting pressure plate 13, the torsion spring detection and positioning tool also includes a first fastener 14, which plays the role of fixing and connecting the limiting pressure plate 13 and the fixed plate 12. The first fastener 14 can penetrate the limiting pressure plate 13 and be fixed and connected to the positioning boss of the fixed plate 12.

[0044] In some other embodiments, fixing bolts may be used instead of the fixing plate 12, and the limiting pressure plate 13 may be installed and fixed relative to the positioning shaft 10 by means of the fixing bolts. That is, the second limiting portion includes a fixing bolt and a limiting pressure plate 13. At this time, a fixing screw hole is radially penetrated through the corresponding position of the positioning shaft 10, and a hole is opened at the position corresponding to the fixing screw hole of the limiting pressure plate 13. After the torsion spring is sleeved on the positioning shaft 10 and a set of torsion arms are fixed by the limiting pin 11, the fixing bolt passes through the opening of the limiting pressure plate 13 and is tightened to the fixing screw hole of the positioning shaft 10. By adjusting the length of the fixing bolt screwed into the fixing screw hole, the distance between the limiting pressure plate 13 and the surface of the positioning shaft 10 is changed, thereby adjusting the preset torsion angle of the torsion spring.

[0045] After the torsion spring is twisted and fixed to a preset torsion angle by the torsion spring detection and positioning tool, it can be immersed in high-temperature oil for detection together with the torsion spring detection and positioning tool. The torsion spring detection and positioning tool is convenient for fixing and removing torsion springs, and can fix and position multiple torsion springs at one time, which significantly improves the detection efficiency of torsion springs.

[0046] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0047] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0048] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A torsion spring detection and positioning tool, characterized in that: include: Positioning shaft, for the torsion spring to be sleeved and positioned; A first limiting portion is convexly arranged relative to the outer peripheral surface of the positioning shaft and is used to limit and fix a group of torsion arms of the torsion spring; The second limiting portion is detachably arranged relative to the positioning shaft and is used to abut against another set of torsion arms of the torsion spring. The second limiting portion cooperates with the first limiting portion and the positioning shaft to twist the torsion spring and maintain it at a preset torsion angle.

2. The torsion spring detection and positioning tool according to claim 1, characterized in that: The second limiting portion includes a fixed plate vertically connected to the positioning shaft, and a limiting pressure plate vertically connected to the fixed plate; when the limiting pressure plate is fixed to the fixed plate along an axial direction parallel to the positioning shaft, the limiting pressure plate squeezes another group of torsion arms of the torsion spring and drives the torsion spring to twist to a preset torsion angle.

3. The torsion spring detection and positioning tool according to claim 2, characterized in that: The positioning shafts are arranged in multiple groups parallel to each other, and the minimum distance between the limiting surface of the limiting pressure plate used to abut against the torsion arm of the torsion spring and the outer peripheral surface of any positioning shaft is equal.

4. The torsion spring detection and positioning tool according to claim 2, characterized in that: One of the fixing plate and the limiting pressure plate is provided with a positioning boss, and the other is provided with a positioning groove matched with the positioning boss.

5. The torsion spring detection and positioning tool according to claim 4, characterized in that: It also includes a first fastener that fixedly connects the limiting pressure plate and the fixing plate.

6. The torsion spring detection and positioning tool according to claim 2, characterized in that: The fixing plates are provided in pair, and the pair of fixing plates are respectively arranged at two ends of the positioning shaft.

7. The torsion spring detection and positioning tool according to any one of claims 2 to 6, characterized in that: The fixing plate is provided with a waist-shaped hole, and the end of the positioning shaft is provided with a plug-in end adapted to the waist-shaped hole.

8. The torsion spring detection and positioning tool according to claim 7, characterized in that: The fixing plate is provided with a first fastening hole which passes through the waist-shaped hole, and also includes a first pressing member which passes through the first fastening hole and abuts against the plug-in end.

9. The torsion spring detection and positioning tool according to any one of claims 1 to 6, characterized in that: The positioning shaft is provided with a pin hole along its radial direction, and the first limiting portion is a limiting pin inserted and fixed through the pin hole.

10. The torsion spring detection and positioning tool according to claim 9, characterized in that: The pin holes are arranged in a plurality of groups along the axial direction of the positioning shaft.

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