Clamp for testing stress of rim

Abstract

The utility model discloses a clamp for testing the stress of a rim. The clamp comprises a frame, a clamping device and a connecting part, the framework is used for wrapping the periphery of the test equipment; the clamping device is assembled in the frame and is matched with the propelling component to fasten the test equipment in the frame; and the connecting part is assembled on the peripheral surface of the outer side of the frame and is used for assembling an integral structure formed by connecting the testing equipment, the frame and the clamping device on a rim, and the connecting parts in different shapes are replaced to be matched with a front wheel rim or a middle and rear axle rim. The rim stress testing device is simple in structure and convenient to operate, the rim stress testing device can be safely and firmly fixed on the hub, normal operation of the rim stress testing device in the running process of a mine car is guaranteed, and permanent damage of vibration in the running process of the mine car to electronic components and the like of the device is avoided.

Description

Technical Field

[0001] The utility model relates to a clamp for testing wheel rim stress and belongs to the technical field of wheel rim stress testing. Background Art

[0002] As an important component of mining dump trucks, the strength and durability of the wheel rim directly affect the safety and loading capacity of the mining truck. With the rapid development of society, low-loaded mining trucks are increasingly unable to meet the actual production efficiency, and the demand for mining trucks with larger tonnage is increasing. In order to make full use of the performance of the mining truck under the condition of safety, it is necessary to conduct dynamic stress testing on the wheel rim during the driving of the mining truck. However, due to the actual situation of the mining truck and the testing equipment, the stress testing equipment needs to be reliably fixed on the wheel hub. The existing fixing device of our company only uses adhesive tape for static (low-speed) testing, which has problems such as unstable fixing and poor adaptability during use, and there are safety issues for the expensive testing equipment. Summary of the invention

[0003] In view of the deficiencies in the prior art, the utility model provides a clamp for testing rim stress, which can safely and firmly fix the rim stress testing equipment on the wheel hub, ensuring the normal operation of the rim stress testing equipment during the movement of the mine car, and avoiding permanent damage to the electronic components of the equipment caused by vibration during the operation of the mine car.

[0004] The utility model is implemented according to the following technical solutions:

[0005] A fixture for testing rim stress, comprising:

[0006] A frame for wrapping the test equipment around;

[0007] A clamping device, assembled in the frame, cooperating with the pushing member to fasten the test device in the frame;

[0008] The connecting component is assembled on the outer peripheral surface of the frame and is used to assemble an integral structure formed by connecting the test equipment, the frame and the clamping device on the rim, and to match the front wheel rim or the middle and rear axle rims by replacing the connecting components of different shapes.

[0009] In some implementations, the framework includes:

[0010] A U-shaped positioning seat, wherein one clamping device is installed in each of the two opposite side plates;

[0011] A baffle is assembled at the opening of the U-shaped positioning seat and is used to limit the position of the test equipment located in the U-shaped positioning seat.

[0012] In some implementations, the U-shaped positioning seat includes:

[0013] The U-shaped positioning plate is composed of a bottom plate and two opposite side plates. The two parallel edges of each side plate are provided with 90-degree flanges facing inward. The cross section of each side plate is a C-shaped surface. The two opposite side plates are used as slideways. The test equipment wrapped by the two clamping devices from both sides is pushed from the opening of the U-shaped positioning plate between the two side plates until it touches the bottom plate.

[0014] Two first connecting plates, respectively fixed on the outer sides of the two side plates, are used to connect the propulsion components of the clamping device on the one hand, and are used to connect the baffle through fasteners on the other hand;

[0015] Two second connecting plates are respectively fixed on the two first connecting plates and are used to connect the connecting components through fasteners.

[0016] In some implementations, the baffle is a U-shaped structure as a whole, and the free ends on both sides are fixed to the two side plates of the U-shaped positioning seat by fasteners respectively; the baffle is provided with at least one circular hole for fixing the antenna of the test equipment, and the baffle is also provided with a notch for facilitating the passage of the test equipment wire.

[0017] In some implementations, the clamping device is composed of a flat plate and an annular side plate surrounding the entire periphery of the flat plate and extending vertically outward therefrom, and the contour shape of the annular side plate is adapted to the side contour shape of the test device, so that the clamping device can wrap the test device.

[0018] In some embodiments, the flat plate is provided with at least one protruding limit plate on the side facing the frame, and at least one of the propulsion components is adjacent to or close to the limit plate. When the propulsion component becomes loose but does not completely fall off, the limit plate can be against the propulsion component to limit the shaking of the clamping device in the frame.

[0019] In some embodiments, the propulsion component is a set bolt and a locking nut, and the set bolt is screwed into a threaded hole on the frame. The set bolt is continuously screwed in, and the circumferential rotation of the set bolt is converted into axial linear motion under the action of the thread until the clamping device is tightened, and the set bolt is fixed by tightening the locking nut; the clamping device is tightened together by multiple set bolts symmetrically arranged on both sides of the frame, thereby fixing the test equipment in the frame.

[0020] In some embodiments, the connecting component is composed of a pair of symmetrically arranged bending plates, the middle portion of the bending plates is fixed to the frame by fasteners, an ear plate with a hole extends from each end of the bending plates, and the four ear plates on the two bending plates are respectively connected to the front axle rim bolts, thereby fixing the test equipment on the axial surface of the front axle rim.

[0021] In some embodiments, the connecting component includes a pair of symmetrically arranged connecting arms, the two connecting arms are tightly attached to the radial circumferential surface of the center and rear axle rims, a fixing plate with a hole is fixed to the middle and bottom of each connecting arm, and the four fixing plates on the two connecting arms are respectively connected to the center and rear axle rims with bolts, thereby fixing the test equipment on the radial circumferential surface of the center and rear axle rims.

[0022] In some embodiments, the connecting arm is an arched structure as a whole, which is composed of a plurality of rib plates arranged side by side and at intervals, and one end of the rib plate is connected to the frame by bolts; the middle and bottom of the transverse cross-section of the rib plate are both hollow step-shaped, and a through hole is provided in the step-shaped portion; one end of one of the fixing plates is located in the middle step of the connecting arm and is fixed thereto by bolts and nuts, and one end of the other fixing plate is located in the bottom step of the connecting arm and is fixed thereto by bolts and nuts.

[0023] Beneficial effects of the utility model:

[0024] The utility model has a simple structure and is easy to operate. The rim stress testing device can be safely and firmly fixed on the wheel hub, ensuring the normal operation of the rim stress testing device during the movement of the mine car, and preventing the vibration during the operation of the mine car from causing permanent damage to the electronic components of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0026] In the attached picture:

[0027] Figure 1 It is a schematic diagram of a preferred embodiment of a fixture for testing rim stress of the utility model;

[0028] Figure 2 This is a schematic diagram of the clamping device of the utility model (a is the front side, b is the back side);

[0029] Figure 3 It is a schematic diagram of the fixture for testing rim stress of the utility model being assembled on the rim of the front axle;

[0030] Figure 4 This is a schematic diagram of the cooperation between the propulsion component and the clamping device of the utility model (i.e. Figure 3 (a magnified view of part I in FIG);

[0031] Figure 5 It is a schematic diagram of the baffle of the utility model;

[0032] Figure 6 This is a schematic diagram of a U-shaped positioning seat of the utility model;

[0033] Figure 7 It is a schematic diagram of another preferred embodiment of the fixture for testing rim stress of the utility model;

[0034] Figure 8 The utility model is a schematic diagram of the fixture for testing rim stress of the present invention being assembled on the rim of the middle and rear axle.

[0035] Figure symbols: 1-clamping device, 2-U-shaped positioning seat, 3-fastening bolt, 4-baffle, 5-bending plate, 6-connecting arm, 7-fixing plate, 8-front axle rim, 9-middle and rear axle rims;

[0036] 1-1-annular side plate, 1-2-flat plate, 1-3-limiting plate, 2-1-U-shaped positioning plate, 2-2-first connecting plate, 2-3-second connecting plate, 2-4-round hole, 4-1-round hole, 4-2-notch.

[0037] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0039] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] like Figure 1 , Figure 3 , Figure 7 , Figure 8 As shown, a fixture for testing rim stress comprises a frame, a clamping device 1 and a connecting component; the frame is used to wrap the test equipment on all sides; the clamping device 1 is assembled in the frame, and cooperates with the pushing component to fasten the test equipment in the frame; the connecting component is assembled on the outer circumference of the frame, and is used to assemble an integral structure formed by connecting the test equipment, the frame and the clamping device 1 on the rim, and the front wheel rim 8 or the middle and rear axle rim 9 can be matched by replacing the connecting components of different shapes.

[0042] From the above, it can be seen that the clamping device 1 is used to wrap and fix a partial area of ​​the test equipment, and then the pushing component is used to tighten the clamping device 1. In this way, the purpose of fastening the test equipment is achieved, and the pushing device is prevented from directly contacting the test equipment and damaging the surface of the equipment.

[0043] The above framework is further explained below.

[0044] like Figure 5 , Figure 6 As shown, the frame includes a U-shaped positioning seat 2 and a baffle 4; the U-shaped positioning seat 2 has a clamping device 1 installed in each of its two opposite side plates; the baffle 4 is assembled at the opening of the U-shaped positioning seat 2 and is used to limit the test equipment located in the U-shaped positioning seat 2.

[0045] Further solutions, such as Figure 6As shown, the U-shaped positioning seat 2 includes a U-shaped positioning plate 2-1, two first connecting plates 2-2 and two second connecting plates 2-3; the U-shaped positioning plate 2-1 is composed of a bottom plate and two opposite side plates, and the two parallel edges of each side plate are provided with an inward 90-degree flange, and the cross-section of each side plate is a C-shaped surface. The two opposite side plates are used as slides, and the test equipment wrapped by the two clamping devices 1 from both sides is pushed into between the two side plates from the opening of the U-shaped positioning plate 2-1 until it touches the bottom plate; the two first connecting plates 2-2 are respectively fixed on the outer sides of the two side plates, on the one hand, they are used to connect the propulsion components of the top clamping device 1, and on the other hand, they are used to connect the baffle 4 through fasteners; the two second connecting plates 2-3 are respectively fixed on the two first connecting plates 2-2, and are used to connect the connecting components through fasteners.

[0046] It should be noted that the U-shaped positioning plate 2-1 is provided with a circular hole 2-4 for fixing the antenna of the test equipment.

[0047] Further solutions, such as Figure 5 As shown, the baffle 4 is a U-shaped structure as a whole, and the free ends on both sides are fixed to the two side plates of the U-shaped positioning seat 2 by fasteners respectively; the baffle 4 is provided with at least one circular hole 4-1 for fixing the antenna of the test equipment, and the baffle 4 is also provided with a notch 4-2 for facilitating the passage of the wire of the test equipment.

[0048] As can be seen from the above, the baffle 4 is provided with a circular hole 4-1 for fixing the antenna of the test equipment. Of course, the U-shaped positioning plate 2-1 is also provided with a circular hole 2-4 for fixing the antenna of the test equipment. The antenna is fixed with a cable tie to prevent the test equipment from being broken due to the high speed and complex road conditions of the mine car.

[0049] The above-mentioned clamping device is further described below.

[0050] like Figure 2 As shown, the clamping device 1 consists of a flat plate 1-2 and an annular side plate 1-1 which surrounds the entire periphery of the flat plate 1-2 and extends vertically outward therefrom. The contour shape of the annular side plate 1-1 is adapted to the side contour shape of the test equipment, so that the clamping device 1 can wrap around the test equipment.

[0051] Further solutions, such as Figure 2 , Figure 4 As shown, the flat plate 1-2 is provided with at least one protruding limit plate 1-3 on the side facing the frame, and at least one propulsion component is adjacent to or close to the limit plate 1-3. When the propulsion component becomes loose but not completely fallen off, the limit plate 1-3 can be against the propulsion component to limit the shaking of the clamping device 1 in the frame.

[0052] As can be seen from the above, the limiting plate 1-3 is used to prevent the test equipment from moving in the U-shaped positioning plate 2-1 due to the loosening of the propulsion component during use, thereby avoiding damage to the test equipment, forming a first protection. The baffle 4 is used to prevent the test equipment from being thrown out of the U-shaped positioning seat 2 due to the falling off of the propulsion component, forming a second protection.

[0053] The above-mentioned propulsion component is further described below.

[0054] like Figure 4 As shown, the propulsion components are a set bolt 3 and a locking nut. The set bolt 3 is screwed into the threaded hole on the frame. The set bolt 3 is continuously screwed in, and the circumferential rotation of the set bolt 3 is converted into axial linear motion under the action of the thread until the clamping device 1 is pressed against the set bolt 3, and the set bolt 3 is fixed by tightening the locking nut; the clamping device 1 is pressed against the set bolts 3 symmetrically arranged on both sides of the frame, thereby fixing the test equipment in the frame.

[0055] The above-mentioned connecting components are further described below.

[0056] Embodiment 1: Figure 1 , Figure 3 As shown, the connecting component consists of a pair of symmetrically arranged bending plates 5, the middle part of the bending plate 5 is fixed to the frame by fasteners, an ear plate with a hole extends from each end of the bending plate 5, and the four ear plates on the two bending plates 5 are respectively connected to the front axle rim bolts, thereby fixing the test equipment on the axial surface of the front axle rim 8.

[0057] Embodiment 2: Figure 7 , Figure 8 As shown, the connecting component includes a pair of symmetrically arranged connecting arms 6, the two connecting arms 6 are tightly embraced on the radial circumferential surface of the center and rear axle rim 9, a fixing plate 7 with a hole is fixed to the middle and bottom of the connecting arm 6, and the four fixing plates 7 on the two connecting arms 6 are respectively connected to the center and rear axle rim bolts, so as to fix the test equipment on the radial circumferential surface of the center and rear axle rim 9.

[0058] Further solutions, such as Figure 7 , Figure 8 As shown, the connecting arm 6 is an arched structure as a whole, which is composed of a plurality of rib plates arranged side by side and at intervals, one end of the rib plate is connected to the frame by bolts; the middle and bottom of the transverse cross-section of the rib plate are both hollow step-shaped, and a through hole is provided in the step-shaped portion; one end of one of the fixing plates 7 is located in the middle step of the connecting arm 6 and is fixed thereto by bolts and nuts, and one end of the other fixing plate 7 is located in the bottom step of the connecting arm 6 and is fixed thereto by bolts and nuts.

[0059] It can be seen from the above that embodiment 2 is an extended structure of the utility model, in which only the connecting components are improved to adapt to its installation on the center and rear axle rim 9, and is connected to the center and rear axle rim by bolts through the holes reserved in the fixing plate 7. The connecting arm 6 adopts an arched structure, which not only meets actual needs, but also reserves a position for workers to remove the bolts, making disassembly easier.

[0060] The following is the use process of the above-mentioned fixture for testing rim stress:

[0061] When using this clamp, first place the two clamping devices 1 (see Figure 1 ) Wrap the test equipment from both sides, and then when the baffle 4 is not installed on the U-shaped positioning seat 2, the test equipment wrapped by the two clamping devices 1 is removed from the U-shaped positioning seat 2 (see Figure 6 ) and then rotate the fixing bolts 3 to tighten the clamping device 1 from both sides to fix the test equipment. Then install the baffle 4 and connect the bending plate 5 and the U-shaped positioning seat 2 with bolts. Finally, it can be connected to the rim bolts through the holes reserved in the bending plate 5.

[0062] The clamping device 1 protects the surface of the test equipment and increases the friction between the fastening bolt 3 and the test equipment. The limit plate 1-3 on the back of the clamping device 1 also serves to limit the fastening bolt 3 when it is loose due to road conditions or other reasons but has not completely fallen off. Figure 4 ), preventing the clamping device 1 from shaking in the U-shaped positioning seat 2 and damaging the internal components of the test equipment. In extreme cases, the fixing bolts 3 may fall off, and the baffle 4 can effectively prevent the test equipment from being thrown out during the rotation of the rim, causing irreparable losses; in terms of structural form, it can prevent the U-shaped positioning plate 2-1 from falling off from both sides of the U-shaped opening (see Figure 6 ) deforms outward.

[0063] The bending plate 5 is connected to the U-shaped positioning seat 2 by bolts, which has a simple structure and is convenient for workers to load and unload. After unloading, it can be connected to the connecting arm 6 by bolts (see Figure 7 , Figure 8 ), to realize the front, middle and rear axles, only one set of fixtures is needed, and the fixtures can be reused and the cost can be reduced by simply changing the connection parts with the rim.

[0064] In summary, the utility model can stably and firmly fix the test equipment on the end face of the wheel hub without damaging the surface of the test equipment; the antenna of the test equipment is firmly fixed with a cable tie to prevent the test equipment from breaking due to the high speed and complex road conditions of the mine car. The limit plate is used to prevent the test equipment from moving in the U-shaped positioning plate due to the loosening of the propulsion component during use, thereby avoiding damage to the test equipment, forming a first guarantee. The baffle is used to prevent the test equipment from being thrown out of the U-shaped positioning seat due to the falling of the propulsion component, forming a second guarantee.

[0065] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0066] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present utility model and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by the present application.

[0067] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.

Claims

1. A fixture for testing rim stress, characterized in that: include: A frame for wrapping the test equipment around; A clamping device, assembled in the frame, cooperating with the pushing member to fasten the test device in the frame; The connecting component is assembled on the outer peripheral surface of the frame and is used to assemble an integral structure formed by connecting the test equipment, the frame and the clamping device on the rim, and to match the front wheel rim or the middle and rear axle rims by replacing the connecting components of different shapes.

2. A fixture for testing rim stress according to claim 1, characterized in that: The framework includes: A U-shaped positioning seat, wherein one clamping device is installed in each of the two opposite side plates; A baffle is assembled at the opening of the U-shaped positioning seat and is used to limit the position of the test equipment located in the U-shaped positioning seat.

3. A fixture for testing rim stress according to claim 2, characterized in that: The U-shaped positioning seat comprises: The U-shaped positioning plate is composed of a bottom plate and two opposite side plates. The two parallel edges of each side plate are provided with 90-degree flanges facing inward. The cross section of each side plate is a C-shaped surface. The two opposite side plates are used as slideways. The test equipment wrapped by the two clamping devices from both sides is pushed from the opening of the U-shaped positioning plate between the two side plates until it touches the bottom plate. Two first connecting plates, respectively fixed on the outer sides of the two side plates, are used to connect the propulsion components of the clamping device on the one hand, and are used to connect the baffle through fasteners on the other hand; Two second connecting plates are respectively fixed on the two first connecting plates and are used to connect the connecting components through fasteners.

4. A fixture for testing rim stress according to claim 2, characterized in that: The baffle is a U-shaped structure as a whole, and the free ends on both sides are fixed to the two side plates of the U-shaped positioning seat by fasteners respectively; The baffle plate is provided with at least one circular hole for fixing the antenna of the testing device, and the baffle plate is also provided with a notch for facilitating the wire of the testing device to pass through.

5. A fixture for testing rim stress according to claim 1, characterized in that: The clamping device consists of a flat plate and an annular side plate surrounding the entire periphery of the flat plate and extending vertically outward therefrom. The contour shape of the annular side plate is adapted to the side contour shape of the test device, so that the clamping device can wrap the test device.

6. A fixture for testing rim stress according to claim 5, characterized in that: The flat plate is provided with at least one protruding limiting plate on the side facing the frame, and at least one of the propulsion components is adjacent to or close to the limiting plate. When the propulsion component becomes loose but not completely fallen off, the limiting plate can abut against the propulsion component to limit the shaking of the clamping device in the frame.

7. A fixture for testing rim stress according to claim 1, characterized in that: The propulsion component is a set bolt and a locking nut. The set bolt is screwed into the threaded hole on the frame. The set bolt is screwed in continuously, and the circumferential rotation of the set bolt is converted into axial linear motion under the action of the thread until the clamping device is tightened, and the set bolt is fixed by tightening the locking nut. The test equipment is fixed in the frame by tightening the clamping device together with a plurality of fixing bolts symmetrically arranged on both sides of the frame.

8. A fixture for testing rim stress according to claim 1, characterized in that: The connecting component is composed of a pair of symmetrically arranged bending plates, the middle part of the bending plate is fixed to the frame by fasteners, an ear plate with a hole extends from each end of the bending plate, and the four ear plates on the two bending plates are respectively connected to the front axle rim bolts, so as to fix the test equipment on the axial surface of the front axle rim.

9. A fixture for testing rim stress according to claim 1, characterized in that: The connecting component includes a pair of symmetrically arranged connecting arms, the two connecting arms are tightly embraced on the radial circumferential surface of the center and rear axle rims, a fixing plate with a hole is fixed to the middle and bottom of each connecting arm, and the four fixing plates on the two connecting arms are respectively connected to the center and rear axle rims by bolts, thereby fixing the test equipment on the radial circumferential surface of the center and rear axle rims.

10. A fixture for testing rim stress according to claim 9, characterized in that: The connecting arm is an arched structure as a whole, which is composed of a plurality of rib plates arranged side by side and at intervals, one end of the rib plate is connected to the frame by bolts; the middle and bottom of the transverse cross section of the rib plate are both hollow step-shaped, and a through hole is provided in the step-shaped portion; One end of one of the fixing plates is located in the middle step of the connecting arm and is fixed thereto by bolts and nuts, and one end of the other fixing plate is located in the bottom step of the connecting arm and is fixed thereto by bolts and nuts.

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