Clamping and fixing device for bearing experiment

Abstract

The utility model discloses a clamping and fixing device for a bearing experiment, which comprises a telescopic cylinder, the telescopic cylinder comprises a cylinder body and a piston rod, the open end of the cylinder body and the outer end of the piston rod are respectively provided with a fixed ring and a movable ring, and the outer sides of the fixed ring and the movable ring are movably provided with supporting rods. The supporting rods located on the fixed ring are movably connected with the supporting rods on the movable ring, a supporting plate is installed at the connecting position, one end of the supporting plate is connected with a movable block through a threaded rod, and symmetrical limiting blocks are arranged on the outer surface of the movable block and the outer surface of the end, away from the movable block, of the supporting plate. The distance between the movable ring and the fixed ring is controlled by controlling stretching and retracting of the piston rod in the telescopic air cylinder, the supporting rod is jacked up through the movable connecting shaft, the supporting plate is jacked outwards, the supporting plate extrudes and supports an inner ring of the bearing outwards, and the effect of fixing the interior of the bearing is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing experiments, in particular to a clamping and fixing device for bearing experiments. Background Technique

[0002] A bearing is an important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. According to the different friction properties of the moving elements, bearings can be divided into two categories: rolling bearings and sliding bearings. Among them, rolling bearings have been standardized and serialized, but compared with sliding bearings, their radial dimensions, vibration, and noise are larger, and the price is also higher. A rolling bearing generally consists of an outer ring, an inner ring, rolling elements, and a cage. According to the shape of the rolling elements, rolling bearings are divided into two categories: ball bearings and roller bearings. At present, after the bearing is designed, it is necessary to calculate its continuous frictional loss during rotation, so that during the later use of the bearing, lubricating oil can be dripped or the balls can be maintained by disassembling at a certain time interval or working interval.

[0003] After retrieval, a precision bearing friction test bench with the patent publication number "CN219777079U" includes a tabletop, a frame is fixed on the tabletop, cylinders are fixed at both the upper and lower ends of the frame, an arc plate is fixed on the piston rod of the cylinder, an experimental bearing is clamped between the two arc plates, and a test shaft is press-fitted in the experimental bearing. The utility model can realize the normal progress of the bearing ball friction test through the cooperation of the experimental bearing and the test shaft, the clamping and positioning of the experimental bearing by the arc plate, and the docking installation of the test shaft and the motor part. By screwing the threaded cap and the threaded rod, it is convenient to quickly disassemble the test shaft and the mounting plate after the test is completed, facilitating the operation of the workers.

[0004] However, the above technical solution has the following problems: The above technical solution fixes the test shaft and the inner ring of the bearing through press-fitting installation. This fixing method is not only troublesome to operate, but also inconvenient for the disassembly and assembly of the bearing, wasting time. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a clamping and fixing device for bearing experiments to solve the problems that the above technical solution installs the bearing through press-fitting, which is not only troublesome to operate, but also inconvenient for the disassembly and assembly of the bearing, wasting time, etc.

[0006] To achieve the above object, the present utility model is realized through the following technical solutions: A clamping and fixing device for bearing experiments, including a horizontally arranged telescopic cylinder. The telescopic cylinder includes a cylinder body and a piston rod. A fixed ring and a movable ring are respectively installed at the open end of the cylinder body and the outer end of the piston rod. A support rod is movably installed on the outer sides of the fixed ring and the movable ring. The support rod on the fixed ring is movably connected to the support rod on the movable ring, and a support plate is installed at the connection. One end of the support plate is connected to a movable block through a threaded rod. Symmetrical limit blocks are provided on the outer surface of the movable block and the outer surface of the end of the support plate away from the movable block.

[0007] Preferably, the outer surfaces of the support plate and the movable block are both arc-shaped surfaces.

[0008] Preferably, the two ends of the support rod are provided with movable connecting shafts.

[0009] Preferably, there are at least four groups of support rods. Each group of support rods has two, and they are respectively movably connected to the fixed ring and the movable ring.

[0010] Preferably, one end of the threaded rod is inserted into the end of the support plate through a bearing, and a rotating handle is provided at the other end of the threaded rod.

[0011] Preferably, the threaded rod penetrates through the movable block, and corresponding threads are provided between the threaded rod and the movable block.

[0012] Preferably, a connecting flange is provided at one end of the telescopic cylinder away from the movable ring.

[0013] Preferably, a telescopic rod is provided between the support plate and the movable block.

[0014] The present utility model provides a clamping and fixing device for bearing experiments, having the following beneficial effects:

[0015] By controlling the telescopic movement of the piston rod in the telescopic cylinder, the present utility model controls the distance between the movable ring and the fixed ring, and then jacks up the support rod through the movable connecting shaft, and further jacks out the support plate. By using the support plate to extrude and support the inner ring of the bearing outward, the effect of fixing the inside of the bearing is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view of the present utility model;

[0017] Figure 2 is the schematic diagram of the internal structure of the front view of the present utility model;

[0018] Figure 3 is the side view of the present utility model;

[0019] Figure 4 This is a schematic diagram of the usage state of the present utility model.

[0020] In the figure:

[0021] 1. Telescopic cylinder; 2. Support plate; 3. Movable block; 4. Movable ring; 5. Fixed ring; 6. Movable connecting shaft; 7. Support rod; 8. Rotating handle; 9. Threaded rod; 10. Limit block; 11. Connecting flange. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4 , the present utility model provides a technical solution: a clamping and fixing device for bearing experiments, including a horizontally arranged telescopic cylinder 1. The telescopic cylinder 1 includes a cylinder body and a piston rod. A fixed ring 5 and a movable ring 4 are respectively installed at the open end of the cylinder body and the outer end of the piston rod. A support rod 7 is movably installed on the outer sides of the fixed ring 5 and the movable ring 4. The support rod 7 on the fixed ring 5 is movably connected to the support rod 7 on the movable ring 4, and a support plate 2 is installed at the connection. One end of the support plate 2 is connected to a movable block 3 through a threaded rod 9. Symmetrical limit blocks 10 are provided on the outer surface of the movable block 3 and the outer surface of the support plate 2 away from the movable block 3.

[0024] In this embodiment, the outer surfaces of the support plate 2 and the movable block 3 are both arc-shaped surfaces. With such a setting, the support plate 2 and the movable block 3 can fit more closely to the inner ring of the bearing, increasing the effective contact area between the support plate 2 and the movable block 3 and the inner ring of the bearing, increasing the friction coefficient, and making the fixation of the inner ring of the bearing more secure.

[0025] In this embodiment, movable connecting shafts 6 are provided at both ends of the support rod 7. The movable connecting shaft 6 mentioned in this specification is a common technique in the prior art, mainly composed of a support frame and a bearing. By providing the movable connecting shaft 6, the support rod 7 can rotate around the movable connecting shaft 6. There are at least four groups of support rods 7, and each group of support rods 7 has two rods, which are respectively movably connected to the fixed ring 5 and the movable ring 4. By providing the movable connecting shaft 6, the support rod 7 can rotate around the movable connecting shaft 6. With such a setting, when the distance between the fixed ring 5 and the movable ring 4 is reduced, since the length of the support rod 7 is fixed, the support rod 7 will be squeezed inward. After the support rod 7 is subjected to the squeezing force, the two ends of the support rod 7 rotate around the movable connecting shaft 6, causing the end where the two support rods 7 are connected to lift upward, and then pushing the support plate 2 outward.

[0026] In this embodiment, one end of the threaded rod 9 is inserted into the end of the support plate 2 through a bearing, and a rotating handle 8 is provided at the other end of the threaded rod 9. The threaded rod 9 passes through the movable block 3, and a corresponding thread is provided between the threaded rod 9 and the movable block 3. An expansion rod is provided between the support plate 2 and the movable block 3. The expansion rod in this specification includes an outer tube and an inner rod, and the inner rod can freely expand and contract within the outer tube. With such a setting, the bearing enables the threaded rod 9 to rotate. By rotating the rotating handle 8 to rotate the threaded rod 9, using the thread fit between the threaded rod 9 and the movable block 3, and through the limit and guidance of the expansion rod, the movable block 3 can move along the expansion rod, so that the limiting block 10 on the movable block 3 tightly clamps the edge of the bearing. As a preferred embodiment, the thickness dimension of the limiting block 10 is equal to the thickness dimension of the inner ring of the bearing. With such a setting, the outer ring and the inner ring of the bearing will not be clamped simultaneously, and it does not affect the detection of the bearing.

[0027] In this embodiment, a connecting flange 11 is provided at the end of the telescopic cylinder 1 away from the movable ring 4. By providing the connecting flange 11, it is convenient to connect the telescopic cylinder 1 to the output end of the motor, so that the motor can drive the telescopic cylinder 1 to rotate.

[0028] Working principle:

[0029] During specific use, the telescopic cylinder 1 is connected to the output end of the motor through the connecting flange 11. The bearing to be tested is sleeved on the outer side of the support plate 2. When the telescopic cylinder 1 is started and the piston rod of the telescopic cylinder 1 drives the movable ring 4 to contract, when the distance between the fixed ring 5 and the movable ring 4 is reduced, since the length of the support rod 7 is fixed, the support rod 7 is squeezed inward. After the support rod 7 is subjected to the squeezing force, both ends of the support rod 7 rotate around the movable connecting shaft 6, so that one end where the two support rods 7 are connected is jacked upward, and then the support plate 2 is jacked outward until the support plate 2 closely abuts against the inner side of the inner ring of the bearing to be tested. At the same time, the threaded rod 9 is rotated by turning the rotating handle 8. By using the threaded fit between the threaded rod 9 and the movable block 3 and through the limit guiding of the telescopic rod, the movable block 3 can move along the telescopic rod, so that the limiting block 10 on the movable block 3 tightly clamps the edge of the bearing. Then, the outer ring of the bearing is fixed by the upper and lower cylinders, and the bearing detection can be carried out.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping and fixing device for bearing testing, comprising a horizontally arranged telescopic cylinder (1), wherein the telescopic cylinder (1) comprises a cylinder body and a piston rod, and is characterized in that: A fixed ring (5) and a movable ring (4) are respectively installed at the open end of the cylinder body and the outer end of the piston rod; a support rod (7) is movably installed on the outer sides of the fixed ring (5) and the movable ring (4); the support rod (7) on the fixed ring (5) and the support rod (7) on the movable ring (4) are movably connected, and a support plate (2) is installed at the connection; one end of the support plate (2) is connected to a movable block (3) via a threaded rod (9); and symmetrical limit blocks (10) are provided on the outer surface of the movable block (3) and the outer surface of one end of the support plate (2) away from the movable block (3).

2. A clamping and fixing device for bearing experiment according to claim 1, characterized in that: The outer surfaces of the support plate (2) and the movable block (3) are both arc-shaped surfaces.

3. A clamping and fixing device for bearing experiment according to claim 1, characterized in that: Both ends of the support rod (7) are provided with movable connection shafts (6).

4. A clamping and fixing device for bearing testing according to claim 1, characterized in that: There are at least four groups of support rods (7), each group of support rods (7) has two support rods, and they are movably connected to the fixed ring (5) and the movable ring (4) respectively.

5. The clamping and fixing device for bearing experiment according to claim 1 is characterized in that: One end of the threaded rod (9) is inserted into the end of the support plate (2) through a bearing, and the other end of the threaded rod (9) is provided with a rotating handle (8).

6. The clamping and fixing device for bearing testing according to claim 1 is characterized in that: The threaded rod (9) passes through the movable block (3), and corresponding threads are provided between the threaded rod (9) and the movable block (3).

7. The clamping and fixing device for bearing testing according to claim 1 is characterized in that: A connecting flange (11) is provided at one end of the telescopic cylinder (1) away from the movable ring (4).

8. The clamping and fixing device for bearing testing according to claim 1 is characterized in that: A telescopic rod is provided between the support plate (2) and the movable block (3).

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