EPS universal bench test tool

Abstract

The utility model discloses an EPS universal rack test tool, which solves the problem of poor universality of a test tool for connecting an EPS and a test rack in the prior art, and comprises a base, an upper mounting plate and a lower mounting plate which are parallelly mounted on the base, the upper mounting plate is provided with an adjusting plate, the adjusting plate is provided with a first chute, and the lower mounting plate is provided with a second chute. The first sliding groove is connected with two adjusting supports, and the adjusting supports slide along the first sliding groove. The test tool is suitable for most of EPS products and test benches, and the universality of the test tool is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile steering system testing, and specifically provides an EPS universal bench test tool. Background Art

[0002] The electric power steering system, referred to as EPS, is the actuator that realizes the steering function of the vehicle. According to the automotive industry standard QC / T1081-2017, when developing EPS, the product's size, performance, reliability, hazardous substances and other aspects must be systematically verified.

[0003] The current test fixtures connecting EPS and test benches can often only be adjusted in length, height and angle according to the EPS products. They cannot realize the assembly and fixation of EPS products of different widths, nor can they realize the installation of test benches of different installation sizes. The versatility is poor, resulting in different EPS products often requiring the design of multiple sets of different test fixtures, which has high manufacturing costs, difficult storage and switching, and thus a long EPS product development cycle. Therefore, there is a need for a test fixture that is suitable for most EPS products and test benches. Utility Model Content

[0004] In order to solve the problem of poor versatility of test fixtures connecting EPS and test benches in the prior art, the utility model provides an EPS universal bench test fixture, which is suitable for most EPS products and test benches, and improves the versatility of the test fixture.

[0005] The specific solutions of the present utility model are as follows.

[0006] An EPS universal bench test fixture includes a base, an upper mounting plate and a lower mounting plate installed parallel to the base, an adjustment plate is provided on the upper mounting plate, a first slide groove is opened on the adjustment plate, the first slide groove is connected to two adjustment brackets, and the adjustment bracket slides along the first slide groove.

[0007] The two adjustment brackets on the upper mounting plate are used to attach to the upper mounting points of the EPS product, while the lower mounting plate is used to attach to the lower mounting points of the EPS product. By sliding the two adjustment brackets along the first guide slot, the spacing between the two adjustment brackets can be adjusted to accommodate EPS product sizes of varying widths, enabling assembly and securing of EPS upper mounting points of varying widths. The width adjustment range is the length of the first guide slot.

[0008] Preferably, two second sliding grooves are provided on the base in parallel in a direction perpendicular to the upper mounting plate, the second sliding grooves are connected to the upper mounting plate, and the upper mounting plate slides along the second sliding grooves.

[0009] The second slide groove is perpendicular to the first slide groove. According to different sizes of EPS products, the distance between the upper mounting plate and the lower mounting plate can be adjusted by sliding the upper mounting plate along the second slide groove to achieve assembly and fixation of the mounting points of EPS of different lengths. The length adjustment range is determined by the position and length of the second slide groove.

[0010] Preferably, the upper mounting plate is two columns fixedly connected at the bottom, the two second sliding grooves are respectively located below the two columns, and the adjustment plate is located between the two columns.

[0011] The connecting portion of the two columns of the upper mounting plate is located above the base. The upper mounting plate has a symmetrical structure, so that the two second slide grooves are subjected to balanced forces, thereby reducing the risk of damage to the test fixture.

[0012] Preferably, two third sliding grooves are provided on both sides of the upper mounting plate in a direction perpendicular to the base, and first adjusting bolts are provided at both ends of the adjustment plate. The first adjusting bolts pass through the third sliding grooves to connect the adjustment plate, and the adjustment plate slides along the third sliding grooves. The upper mounting plate and the adjustment plate are connected and fixed by the first adjusting bolts.

[0013] The two third guide slots are located on either side of the upper mounting plate, and the adjustment plate is connected to the third guide slots via a first adjustment bolt. By sliding the adjustment plate along the third guide slots, the height of the adjustment plate, and therefore the height of the adjustment bracket, can be adjusted to accommodate EPS product sizes. This allows for the assembly and fixation of EPS upper mounting points of varying heights. The height adjustment range is determined by the position and length of the third guide slots.

[0014] Preferably, the adjustment plate is rotatably connected to the upper mounting plate via the first adjustment bolts, and the rotation axis is a line connecting the first adjustment bolts at both ends of the adjustment plate.

[0015] When the upper and lower mounting planes of the EPS product are not parallel and have a certain angle, the angles of the two mounting surfaces can be adjusted by rotating the adjustment plate, thereby achieving assembly and fixation of the EPS product with two-way or four-way adjustment functions.

[0016] Preferably, the adjustment bracket is fixed with a positioning boss, and the adjustment plate is also provided with a guide groove parallel to the first slide groove. The positioning boss is connected to the guide groove through a second adjusting bolt, and the second adjusting bolt passes through the positioning boss and the guide groove in sequence. An adjusting nut is provided at the tail end, and the positioning boss slides along the guide groove. The adjustment bracket and the adjustment plate are connected and fixed by the second adjusting bolt.

[0017] The length of the guide groove is greater than or equal to the length of the first slide groove. When the adjustment bracket slides along the first slide groove, the positioning boss fixed on the adjustment bracket slides along the guide groove to prevent the adjustment bracket from rotating when sliding along the first slide groove.

[0018] Preferably, a groove is provided in the middle position above the lower mounting plate, and six threaded holes are evenly provided on the lower mounting plate in a direction parallel to the first slide groove, symmetrically distributed on the left and right sides of the groove, and two first assembly bolts are installed at the threaded holes.

[0019] According to EPS products of different sizes, the spacing between the two first assembly bolts can be adjusted by changing the installation position of the first assembly bolt to achieve assembly and fixation of EPS lower mounting points with different hole spacings. The groove is used to accommodate EPS products.

[0020] Preferably, a first scale having the same length as the first slide groove is provided on the adjustment plate in a direction parallel to the first slide groove, and a second scale is provided below the six threaded holes on the lower mounting plate.

[0021] According to EPS products of different sizes, combined with the first scale, the pre-installation position of the adjustment bracket can be determined in advance to facilitate alignment with the upper installation point. Combined with the second scale, the pre-installation position of the first adjustment bolt can be determined in advance to facilitate alignment with the lower installation point.

[0022] Preferably, the base is provided with a plurality of light holes, and the spacing between adjacent light holes is set in various ways. The plurality of light holes are used for mounting a test bench. By setting the spacing between the light holes in various ways, the test fixture is suitable for mounting test benches of various mounting sizes.

[0023] Preferably, the upper mounting plate and the lower mounting plate are respectively fixed to the base by bolts, and the two adjustment brackets are both installed with second assembly bolts. The adjustment brackets are assembled and fixed to the upper mounting point of the EPS product by the second assembly bolts.

[0024] Therefore, the utility model has the following beneficial effects.

[0025] By sliding the two adjustment brackets on the upper mounting plate along the first slide groove, the distance between the two adjustment brackets is adjusted to achieve assembly and fixation of the upper mounting points of EPS with different widths; by sliding the upper mounting plate along the second slide groove, the distance between the upper mounting plate and the lower mounting plate is adjusted to achieve assembly and fixation of the mounting points of EPS with different lengths; by sliding the adjustment plate along the third slide groove, the height of the adjustment plate is adjusted, that is, the height of the adjustment bracket is adjusted to achieve assembly and fixation of the upper mounting points of EPS with different heights; by rotating the adjustment plate, the angles of the two mounting surfaces are adjusted to achieve assembly and fixation of EPS products with two-way adjustment or four-way adjustment functions; by changing the installation position of the first assembly bolt and adjusting the distance between the two first assembly bolts, assembly and fixation of EPS lower mounting points with different hole spacings are achieved; by setting the distances of several light holes on the base to multiple types, installation of test benches with multiple mounting sizes can be achieved.

[0026] The test fixture of the utility model can be connected to EPS products of different sizes and test benches of different models, is suitable for most EPS products and test benches, and improves the versatility of the test fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work.

[0028] Figure 1 This is a schematic diagram of the structure of an EPS universal bench test tooling of the utility model Figure 1 .

[0029] Figure 2 This is a schematic diagram of the structure of an EPS universal bench test tooling of the utility model Figure 2 .

[0030] Figure 3 This is a schematic diagram of the structure of an EPS universal bench test tooling of the utility model Figure 3 .

[0031] Figure 4 This is a schematic diagram of the structure of an EPS universal bench test tooling of the utility model Figure 4 .

[0032] Figure 5 This is a schematic diagram of the structure of an EPS universal bench test tooling of the utility model Figure 5 .

[0033] In the figure: 1. Base, 101. Second slide groove, 102. Light hole, 2. Upper mounting plate, 2001. Third slide groove, 201. Adjustment plate, 2011. First slide groove, 2012. First adjusting bolt, 2013. Guide groove, 2014. First scale, 202. Adjustment bracket, 2021. Positioning boss, 2022. Second adjusting bolt, 2023. Adjustment nut, 2024. Second assembly bolt, 3. Lower mounting plate, 301. Groove, 302. Threaded hole, 303. First assembly bolt, 304. Second scale. DETAILED DESCRIPTION

[0034] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0035] like Figure 1 The figure shows the structure of an EPS universal bench test tool of the utility model. Figure 1 The EPS universal bench test fixture of this embodiment includes a base 1, an upper mounting plate 2, and a lower mounting plate 3. The upper mounting plate 2 and the lower mounting plate 3 are installed parallel to the base 1. The upper mounting plate 2 and the lower mounting plate 3 are respectively arranged perpendicular to the base 1 and fixed to the base 1 by bolts. The upper mounting plate 2 is used for assembling and fixing the upper mounting point of the EPS product, and the lower mounting plate 3 is used for assembling and fixing the lower mounting point of the EPS product.

[0036] Two second chutes 101 are provided on the base 1 in a direction perpendicular to the upper mounting plate 2. Specifically, the two second chutes 101 are perpendicular to the lower mounting plate 3. The length of the second chutes 101 is defined as the X direction. The second chutes 101 are connected to the upper mounting plate 2, and the upper mounting plate 2 slides along the second chutes 101, meaning that the upper mounting plate 2 slides in the X direction. The upper mounting plate 2 comprises two columns fixedly connected at the bottom. The connecting portion of the two columns is located above the base 1. The two second chutes 101 are located below the two columns, respectively. An adjustment plate 201 is also provided on the upper mounting plate 2, located between the two columns. The overall symmetrical structure of the upper mounting plate 2 ensures balanced force on the two second chutes 101, reducing the risk of damage to the test fixture.

[0037] In a preferred embodiment, the length of the second slide groove 101 is set to 200 mm, and the distance adjustment range between the upper mounting plate 2 and the lower mounting plate 3 is 76 mm-276 mm, that is, it is suitable for EPS products in which the distance between the upper mounting point and the lower mounting point in the X direction is 76 mm-276 mm.

[0038] Two third chutes 2001 are provided on either side of the upper mounting plate 2, perpendicular to the base 1. These chutes 2001 are perpendicular to the second chutes 101 and are located on two columns of the upper mounting plate 2. The length of the third chutes 2001 is oriented in the Z direction. First adjustment bolts 2012 are provided at both ends of the adjustment plate 201. These first adjustment bolts 2012 pass through the third chutes 2001 and connect to the adjustment plate 201. Specifically, the adjustment plate 201 is connected to the third chutes 2001 via the first adjustment bolts 2012. The adjustment plate 201 slides along the third chutes 2001, i.e., the adjustment plate 201 slides in the Z direction. The adjustment plate 201 is rotatably connected to the upper mounting plate 2 via the first adjustment bolts 2012. The axis of rotation is the line connecting the first adjustment bolts 2012 at both ends of the adjustment plate 201. After tightening the first adjustment bolts 2012, the upper mounting plate 2 and the adjustment plate 201 are securely connected via the first adjustment bolts 2012.

[0039] In a preferred embodiment, the length of the third slide groove 2001 is set to 45 mm, that is, the height adjustment range of the adjustment plate 201 in the third slide groove 2001 is 0 mm-45 mm, which is suitable for EPS products with a height difference between the upper and lower mounting surfaces ranging from 17 mm to 62 mm.

[0040] The adjustment plate 201 is provided with a first slot 2011, which is perpendicular to the second slot 101 and the third slot 2001. The length of the first slot 2011 is defined as the Y direction. Two adjustment brackets 202 are connected to the first slot 2011. The adjustment brackets 202 slide along the first slot 2011, i.e., they slide in the Y direction. Both adjustment brackets 202 are secured with second mounting bolts 2024, which are used to secure the upper mounting point of the EPS product to the upper mounting plate 2. A first scale mark 2014, parallel to the first slot 2011 and equal in length to the first slot 2011, is provided on the adjustment plate 201. This allows the pre-installed position of the adjustment brackets 202 to be determined based on the size of the EPS product, facilitating alignment with the upper mounting point.

[0041] A positioning boss 2021 is fixedly mounted on the adjustment bracket 202. The adjustment plate 201 is also provided with a guide groove 2013 parallel to the first slide groove 2011. The length of the guide groove 2013 is greater than or equal to that of the first slide groove 2011. The positioning boss 2021 is connected to the guide groove 2013 via a second adjusting bolt 2022. The second adjusting bolt 2022 passes through the positioning boss 2021 and the guide groove 2013 in sequence. An adjusting nut 2023 is sleeved on the end of the second adjusting bolt 2022, allowing the positioning boss 2021 to slide along the guide groove 2013. After tightening the adjusting nuts 2023 at the ends of the two second adjusting bolts 2022, the adjustment bracket 202 is fixedly mounted to the adjustment plate 201 via the second adjusting bolts 2022. When the adjustment bracket 202 slides along the first slide groove 2011, the positioning boss 2021 fixedly mounted on the adjustment bracket 202 slides along the guide groove 2013, preventing the adjustment bracket 202 from rotating while sliding along the first slide groove 2011.

[0042] In a preferred embodiment, the length of the first slide groove 2011 is set to 160 mm, that is, the spacing adjustment range between the two adjustment brackets 202 is 0 mm-160 mm, which is suitable for EPS products with an upper mounting point width adjustment range of 0 mm-160 mm.

[0043] A recess 301 is located in the center of the upper portion of the lower mounting plate 3 to accommodate the EPS product. Six threaded holes 302 are evenly spaced parallel to the first guide slot 2011 on the lower mounting plate 3, i.e., six threaded holes 302 are evenly spaced in the Y direction, symmetrically distributed on either side of the recess 301. Two first assembly bolts 303 are installed in these threaded holes 302, which secure the lower mounting plate 3 to the EPS product's lower mounting point. A second scale 304 is located below the six threaded holes 302 on the lower mounting plate 3. This allows for pre-determining the pre-installed position of the first adjustment bolts 2012 based on the size of the EPS product, facilitating alignment with the lower mounting point.

[0044] In a preferred embodiment, the distance between the two outermost threaded holes 302, that is, the two threaded holes 302 farthest apart, is 160 mm, the distance between the two middle threaded holes 302, that is, the threaded holes 302 on both sides of the groove 301, is 100 mm, and the distance between the remaining two threaded holes 302 and the threaded holes 302 on both sides thereof is 15 mm. The second scale 304 below the six threaded holes 302 is marked as -80, -65, -50, 50, 65, and 80 respectively, which is suitable for EPS products with a lower mounting point spacing of 100 mm, 130 mm, 145 mm or 160 mm.

[0045] The base 1 is also provided with a plurality of light holes 102, with various spacings between adjacent light holes 102. The light holes 102 are used for mounting a test bench. By setting the spacings between the light holes 102 in various ways, the test fixture is suitable for mounting test benches of various mounting sizes.

[0046] In a preferred embodiment, there are thirty-five light holes 102 with a diameter of 8.5 mm on the base 1, which are arranged in a rectangular array, wherein five pairs of light holes 102 are arranged with a spacing of 30 mm, and several pairs are arranged with a spacing of 40 mm and multiples thereof, which is suitable for test benches of various installation sizes.

[0047] In a preferred embodiment, the base 1 is fixed to the upper mounting plate 2 and the lower mounting plate 3 via M8 bolts, the upper mounting plate 2 is fixed to the adjustment plate 201 via M8 bolts, and the adjustment plate 201 is fixed to the two adjustment brackets 202 via M6 bolts.

[0048] When assembling and fixing EPS products of different sizes, the adjustment process of the test tooling is as follows.

[0049] According to the different sizes of EPS products, the upper mounting plate 2 is slid along the second slide groove 101 to adjust the distance between the upper mounting plate 2 and the lower mounting plate 3 to achieve the assembly and fixation of the mounting points of EPS of different lengths. The length adjustment range is determined by the position and length of the second slide groove 101.

[0050] To accommodate EPS product sizes, the height of the adjustment plate 201 (and, consequently, the height of the two adjustment brackets 202) can be adjusted by sliding the adjustment plate 201 along the third guide slot 2001. This allows for the assembly and fixation of EPS upper mounting points of varying heights. The height adjustment range is determined by the position and length of the third guide slot 2001. If the upper and lower mounting surfaces of an EPS product are not parallel but at an angle, the adjustment plate 201 can be rotated to adjust the angle between the mounting surfaces, achieving the assembly and fixation of an EPS product with two-way or four-way adjustment. After adjusting the position of the adjustment plate 201, tighten the two first adjustment bolts 2012 to secure the adjustment plate 201 to the upper mounting plate 2.

[0051] To accommodate EPS product sizes of varying widths, the two adjustment brackets 202 are slid along the first guide groove 2011, adjusting the spacing between them to achieve assembly and fixation of EPS mounting points of varying widths. The width adjustment range is the length of the first guide groove 2011. Before adjusting the positions of the two adjustment brackets 202, the first scale 2014 can be used to determine the pre-installed positions of the two adjustment brackets 202, facilitating alignment of the mounting points. After adjusting the positions of the adjustment brackets 202, tighten the adjustment nuts 2023 at the ends of the two second adjustment bolts 2022 to secure the two adjustment brackets 202 to the adjustment plate 201.

[0052] By varying the installation position of the two first assembly bolts 303 and adjusting the spacing between them to accommodate EPS product sizes, the assembly and fixation of EPS lower mounting points with varying hole spacing can be achieved. Before adjusting the installation positions of the two first assembly bolts 303, the second scale 304 can be used to determine the pre-installed positions of the two first adjustment bolts 2012 in advance, facilitating alignment of the lower mounting points.

[0053] In addition, according to the test bench of different installation sizes, the light holes 102 with appropriate spacing are selected on the base 1 to install the test bench. By setting the spacing of several light holes 102 on the base 1 to multiple types, the installation of test benches of different installation sizes can be achieved.

[0054] Figure 1 The structure diagram of an EPS universal bench test tool of the utility model is shown as follows Figure 1 In the figure, the upper mounting plate 2 is adjusted to the lower limit in the X direction, that is, the end of the second slide 101 that is closest to the lower mounting plate 3; the adjustment plate 201 is adjusted to the middle position in the Z direction, that is, the middle position of the third slide 2001; the two adjustment brackets 202 are adjusted to the upper limit in the Y direction, that is, the two ends of the first slide 2011; the two first assembly bolts 303 are installed in the threaded holes 302 with a hole pitch of 130mm, that is, located at the threaded holes 302 with scales of -65mm and 65mm respectively; the upper and lower mounting surfaces are parallel.

[0055] like Figure 2 The figure shows the structure of an EPS universal bench test tool of the utility model. Figure 2 The upper mounting plate 2 is adjusted to the upper limit in the X direction, that is, the end of the second chute 101 that is farthest from the lower mounting plate 3; the adjustment position of the rest of the parts is the same as Figure 1 Same as shown.

[0056] like Figure 3 The figure shows the structure of an EPS universal bench test tool of the utility model. Figure 3The upper mounting plate 2 is adjusted to the upper limit in the X direction; the adjustment plate 201 is adjusted to the lower limit in the Z direction, that is, the lower end of the third slide 2001; the two adjustment brackets 202 are adjusted to the lower limit in the Y direction, that is, the middle position of the first slide 2011; the adjustment positions of the remaining parts are the same as Figure 1 Same as shown.

[0057] like Figure 4 The figure shows the structure of an EPS universal bench test tool of the utility model. Figure 4 The upper mounting plate 2 is adjusted to the upper limit in the X direction; the adjustment plate 201 is adjusted to the upper limit in the Z direction, that is, the uppermost end of the third slide 2001; the two adjustment brackets 202 are adjusted to the lower limit in the Y direction; the two first assembly bolts 303 are installed in the threaded holes 302 with a hole pitch of 160mm, that is, in the threaded holes 302 with scales of -80mm and 80mm respectively; the adjustment positions of the rest of the parts are the same as Figure 1 Same as shown.

[0058] like Figure 5 The figure shows the structure of an EPS universal bench test tool of the utility model. Figure 5 Adjust the upper mounting plate 2 to the upper limit in the X direction; adjust the adjustment plate 201 to the upper limit in the Z direction; adjust the two adjustment brackets 202 to the lower limit in the Y direction; install the two first assembly bolts 303 into the threaded holes 302 with a hole pitch of 160mm; rotate the upper mounting surface 45 degrees, that is, rotate the adjustment plate 201 45 degrees.

[0059] The utility model realizes the assembly and fixation of the upper mounting points of EPS of different widths by sliding the two adjustment brackets 202 on the upper mounting plate along the first slide groove 2011; the assembly and fixation of the mounting points of EPS of different lengths is realized by sliding the upper mounting plate 2 along the second slide groove 101; the height of the adjustment plate 201 is adjusted by sliding the adjustment plate 201 along the third slide groove 2001, that is, the height of the adjustment bracket 202 is adjusted to realize the assembly and fixation of the upper mounting points of EPS of different heights; the angle of the two mounting surfaces is adjusted by rotating the adjustment plate 201, so as to realize the assembly and fixation of EPS products with two-way adjustment or four-way adjustment functions; the assembly and fixation of the lower mounting points of EPS with different hole pitches is realized by changing the installation position of the first assembly bolt 303 and adjusting the spacing of the two first assembly bolts 303; the installation of test benches of various mounting sizes is realized by setting the spacing of the plurality of light holes 102 on the base 1 to multiple sizes.

[0060] The test fixture of the utility model can be connected to EPS products of different sizes and test benches of different models, is suitable for most EPS products and test benches, and improves the versatility of the test fixture.

[0061] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural transformation made to the above embodiment based on the technical essence of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An EPS universal bench test fixture, including a base, characterized in that: It also includes an upper mounting plate and a lower mounting plate installed in parallel on the base, the upper mounting plate is provided with an adjustment plate, the adjustment plate is provided with a first slide groove, the first slide groove is connected to two adjustment brackets, and the adjustment bracket slides along the first slide groove.

2. The EPS universal bench test fixture according to claim 1, characterized in that: Two second sliding grooves are provided on the base in parallel in a direction perpendicular to the upper mounting plate. The second sliding grooves are connected to the upper mounting plate, and the upper mounting plate slides along the second sliding grooves.

3. The EPS universal bench test fixture according to claim 2, characterized in that: The upper mounting plate is composed of two columns fixedly connected at the bottom, the two second sliding grooves are respectively located below the two columns, and the adjustment plate is located between the two columns.

4. The EPS universal bench test fixture according to claim 1, characterized in that: Two third sliding grooves are provided on both sides of the upper mounting plate in a direction perpendicular to the base, and first adjusting bolts are provided at both ends of the adjustment plate. The first adjusting bolts pass through the third sliding grooves to connect the adjustment plate, and the adjustment plate slides along the third sliding grooves. The upper mounting plate and the adjustment plate are connected and fixed by the first adjusting bolts.

5. The EPS universal bench test fixture according to claim 4, characterized in that: The adjustment plate is rotatably connected to the upper mounting plate via the first adjustment bolts, and the rotation axis is a line connecting the first adjustment bolts at both ends of the adjustment plate.

6. The EPS universal bench test fixture according to claim 1, characterized in that: The adjustment bracket is fixed with a positioning boss, and the adjustment plate is also provided with a guide groove parallel to the first slide groove. The positioning boss is connected to the guide groove through a second adjusting bolt. The second adjusting bolt passes through the positioning boss and the guide groove in sequence, and an adjusting nut is provided at the tail end. The positioning boss slides along the guide groove, and the adjustment bracket and the adjustment plate are connected and fixed by the second adjusting bolt.

7. The EPS universal bench test fixture according to claim 1, characterized in that: A groove is provided in the middle position above the lower mounting plate, and six threaded holes are evenly provided on the lower mounting plate in a direction parallel to the first slide groove, symmetrically distributed on the left and right sides of the groove, and two first assembly bolts are installed at the threaded holes.

8. The EPS universal bench test fixture according to claim 7, characterized in that: A first scale having the same length as the first sliding groove is provided on the adjustment plate in a direction parallel to the first sliding groove, and a second scale is provided below the six threaded holes on the lower mounting plate.

9. The EPS universal bench test fixture according to claim 1, characterized in that: The base is provided with a plurality of light holes, and the distances between adjacent light holes are arranged in various ways.

10. An EPS universal bench test fixture according to any one of claims 1 to 9, characterized in that: The upper mounting plate and the lower mounting plate are respectively fixed to the base through bolt connection, and the two adjustment brackets are both equipped with second assembly bolts.

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