Low-temperature test box

Abstract

The utility model discloses a low-temperature test box, which relates to the technical field of test boxes and comprises a box body and a support component. A temperature sensor is installed on the left side of the interior of the box body, a condensation pipe is fixed to the rear side of the interior of the box body, two corresponding openings are formed in the left side of the box body, the two ends of the condensation pipe are fixed to the interiors of the two openings respectively, and two connecting flange rings are fixed to the circumferential face of the condensation pipe; an extrusion assembly is mounted on the lower side of the interior of the box body; the supporting assembly comprises five placing plates, rotating pipes, a first chain wheel ring and a first chain, the five placing plates are fixed together, the placing plate on the left side is fixed to the left side in the box body, three corresponding rotating holes are formed in the upper side of each placing plate, the rotating pipes are rotationally connected into the rotating holes, and the rotating pipes are connected with the first chain wheel ring. A first chain wheel ring is fixed to the lower end of the circumferential face of the rotating pipe, and synchronous low-temperature testing can be conducted on the multiple ball cages at the same time.

Description

TECHNICAL FIELD

[0001] The utility model relates to test box technical field, concretely is a low temperature test test box. BACKGROUND

[0002] In the process of producing ball cage, low temperature test is the key link of verifying its reliability, needs to introduce ball cage rotation link when carrying out low temperature, rotation can effectively restore the actual working condition of ball cage under low temperature environment, reveals potential problem that static test cannot capture through dynamic simulation. Low temperature can cause the shrinkage deformation of the inner and outer ring materials of ball cage due to the difference of thermal expansion coefficient, and then change the play and affect the friction characteristics, only rotation test can truly reflect the play change and friction behavior under dynamic working condition; At the same time, the lubricating grease is prone to viscosity anomaly or hardening under low temperature environment, rotation test can intuitively evaluate the uniformity of lubricant distribution and low temperature lubricating efficiency, expose low temperature card stagnation risk at start and vibration abnormal sound in operation;

[0003] Traditional test device can meet basic demand, but is limited to the fixed structure of only testing single ball cage at a time, leading to long time consumption of queuing for multiple ball cage test, which not only affects production rhythm, but also is difficult to simulate the comprehensive performance of ball cage under low temperature dynamic working condition simultaneously, therefore, we propose a low temperature test test box. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art, provide a low temperature test test box, which can simultaneously test multiple ball cages under low temperature, and effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a low temperature test test box, comprising a box body and a supporting assembly.

[0006] The box body is internally provided with a temperature sensor on the left side, a condenser pipe is fixed on the rear side of the box body, two corresponding openings are formed on the left side of the box body, the two ends of the condenser pipe are fixed in the two openings respectively, two connecting flange rings are fixed on the circumferential surface of the condenser pipe, and an extrusion assembly is installed on the lower side of the box body.

[0007] Supporting assembly: it is five that containing placement plate, rotating pipe, first sprocket ring and first chain, five placement plates are fixed together, the left side placement plate is fixed on the left side in the box body, the upper side of the placement plate is equipped with three corresponding rotating holes, the rotating hole is rotatably connected with rotating pipe, the lower end of the circumferential surface of the rotating pipe is fixed with the first sprocket ring, three first sprocket rings are connected through two first chains, the right side of the right side placement plate is provided with the poking assembly, the poking assembly is connected with five rotating pipes in front, the upper end of the extrusion assembly is located in the inside of all rotating pipes respectively, the upper end of the circumferential surface of the rotating pipe is provided with the fixed assembly, the supporting assembly is provided to support the ball cage to be detected;

[0008] Wherein: the temperature sensor is bidirectionally electrically connected with the external PLC controller.

[0009] Further, the poking assembly contains motor, chain wheel, fixed frame, second chain and second sprocket ring, the right side of the right side placement plate is fixed with the fixed frame, the fixed frame is fixed on the right side in the box body, the upper side of the fixed frame is provided with the motor, the output shaft of the motor is fixed with the chain wheel, the circumferential surface of five rotating pipes in front is fixed with the second sprocket ring, two adjacent second sprocket rings are connected through the second chain, the chain wheel is connected with the right side second sprocket ring through the second chain, the input end of the motor is electrically connected with the output end of the external PLC controller, the poking assembly is set to drive all rotating pipes to rotate.

[0010] Further, the fixed assembly contains slide rod, arc-shaped antiskid plate and spring, the upper end of the circumferential surface of the rotating pipe is equipped with four corresponding sliding holes, the sliding hole is slidably connected with the slide rod, the end face of the slide rod outside the rotating pipe is fixed with the arc-shaped antiskid plate, the circumferential surface of the slide rod is sleeved with the spring, one end of the spring is fixed on the side surface of the arc-shaped antiskid plate, the other end of the spring is fixed on the circumferential surface of the rotating pipe, the fixed assembly is set so that the ball cage to be detected can be sleeved on the circumferential surface of the rotating pipe during use, and then the inner ring of the ball cage is fixed through the fixed assembly.

[0011] Further, the extrusion assembly contains electric telescopic rod, fixed plate, support rod and extrusion frustum, two corresponding electric telescopic rods are installed on the lower side in the box body, the fixed plate is fixed on the telescopic arm of the two electric telescopic rods, the upper side of the fixed plate is fixed with evenly distributed support rods, the upper end of the support rod is located in the rotating pipe, the upper end of the support rod is fixed with the extrusion frustum, the surface of the extrusion frustum is fitted with the end surface of the four slide rods in the rotating pipe, the input end of the electric telescopic rod is electrically connected with the output end of the external PLC controller, and the extrusion assembly is set to extrude all slide rods.

[0012] Further, the front side of the box is hinged with a baffle, a handle is fixed to the front side of the baffle, a sealing rubber frame is fixed to the rear side of the baffle, and a groove is formed in the front side of the box, and the sealing rubber frame is clamped in the groove, so that the box is sealed by the baffle and the sealing rubber frame.

[0013] Further, the front side of the baffle is provided with an observation hole, and a transparent plate is fixed in the observation hole, so that the user can observe the condition in the box through the baffle.

[0014] Compared with the prior art, the low-temperature test box has the following advantages:

[0015] 1. By arranging five placing plates in the supporting assembly and arranging three rotating tube structures for each placing plate, and by cooperating with the linkage design of the first sprocket ring and the chain, fifteen ball cages can be installed at one time and synchronous rotation test can be realized, the chain and sprocket transmission system of the shifting assembly is used, and a single motor can drive all the rotating tubes on the front side to rotate synchronously, the test efficiency is greatly improved, the efficiency bottleneck problem caused by the fact that the traditional device can only test a single ball cage at one time is solved, and the device is especially suitable for rapid quality verification in batch production scenes.

[0016] 2. The continuous pressure of the extrusion frustum on the end of the slide rod makes the four arc-shaped anti-skid plates generate radial expansion force, so that the ball cage installation with different inner diameter sizes can be adapted, and the stable clamping of the inner ring of the ball cage during low-temperature shrinkage can be ensured. In combination with the active rotation function of the rotating tube driven ball cage, the dynamic working state of the ball cage in the low-temperature environment is truly restored, the problems of changes in play caused by cold shrinkage, low-temperature fluidity of lubricant and abnormal starting torque are effectively detected, and the restoration degree of the test result to the actual working condition is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front side structure schematic view of the utility model;

[0018] Figure 2 It is a temperature sensor structure schematic view of the utility model;

[0019] Figure 3 It is a supporting assembly structure schematic view of the utility model;

[0020] Figure 4 It is an extrusion assembly structure schematic view of the utility model;

[0021] Figure 5 It is a fixed assembly structure schematic view of the utility model.

[0022] In the diagram: 1. Housing, 2. Temperature sensor, 3. Condenser pipe, 4. Connecting flange ring, 5. Support assembly, 51. Placement plate, 52. Rotary pipe, 53. First sprocket ring, 54. First chain, 6. Actuating assembly, 61. Motor, 62. Sprocket, 63. Fixing frame, 64. Second chain, 65. Second sprocket ring, 7. Fixing assembly, 71. Slide bar, 72. Arc-shaped anti-slip plate, 73. Spring, 8. Extrusion assembly, 81. Electric telescopic rod, 82. Fixing plate, 83. Support rod, 84. Extrusion cone, 9. Baffle, 10. Handle, 11. Sealing rubber frame, 12. Transparent plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 This embodiment provides a technical solution: a low-temperature test chamber, including a chamber body 1 and a support component 5;

[0025] Box 1: A temperature sensor 2 is installed on the left side inside the box 1. A condenser pipe 3 is fixed on the rear side inside the box 1. Two corresponding openings are opened on the left side of the box 1. The two ends of the condenser pipe 3 are fixed inside the two openings respectively. Two connecting flange rings 4 are fixed on the circumferential surface of the condenser pipe 3. An extrusion assembly 8 is installed on the lower side inside the box 1. The extrusion assembly 8 includes an electric telescopic rod 81, a fixing plate 82, a support rod 83, and an extrusion cone 84. Two corresponding electric telescopic rods 81 are installed on the lower side inside the box 1. A fixing plate 82 is fixed on the telescopic arm of the two electric telescopic rods 81. Evenly distributed support rods 83 are fixed on the upper side of the fixing plate 82. The upper end of the support rod 83 is located inside the rotating tube 52. An extrusion cone 84 is fixed on the upper end of the support rod 83. The surface of the extrusion cone 84 is in contact with the end face of the four sliding rods 71 ​​located inside the rotating tube 52. The input end of the electric telescopic rod 81 is electrically connected to the output end of the external PLC controller. The extrusion assembly 8 is used to extrude all the sliding rods 71.

[0026] Support assembly 5 includes a placement plate 51, a rotating tube 52, a first sprocket ring 53, and a first chain 54. Five placement plates 51 are provided and fixed together. The left placement plate 51 is fixed inside the housing 1 on the left side. Three corresponding rotating holes are opened on the upper side of the placement plate 51, and the rotating tube 52 is rotatably connected inside the rotating holes. A first sprocket ring 53 is fixed to the lower end of the circumference of the rotating tube 52. The three first sprocket rings 53 are connected by two first chains 54. A toggle assembly is installed on the right side of the right placement plate 51. Part 6, the actuating assembly 6 is connected to the five rotating tubes 52 on the front side, the upper end of the pressing assembly 8 is located inside all the rotating tubes 52, and the upper end of the circumferential surface of the rotating tubes 52 is equipped with a fixing assembly 7. The actuating assembly 6 includes a motor 61, a sprocket 62, a fixing frame 63, a second chain 64 and a second sprocket ring 65. The right side of the right-side placement plate 51 is fixed with a fixing frame 63. The fixing frame 61 is fixed inside the right side of the housing 1. The motor 61 is installed on the upper side of the fixing frame 61. The sprocket 62 is fixed on the output shaft of the motor 61. Front side Each of the five rotating tubes 52 has a second sprocket ring 65 fixed on its circumferential surface. Two adjacent second sprocket rings 65 are connected by a second chain 64. The sprocket 62 is connected to the second sprocket ring 65 on the right side via the second chain 64. The input end of the motor 61 is electrically connected to the output end of an external PLC controller. The fixing assembly 7 includes a slide rod 71, an arc-shaped anti-slip plate 72, and a spring 73. Four corresponding sliding holes are opened at the upper end of the circumferential surface of the rotating tube 52. The slide rod 71 is slidably connected inside the sliding holes. The slide rod 71 is located outside the rotating tube 52. An arc-shaped anti-slip plate 72 is fixed on the end face, and a spring 73 is sleeved on the circumferential surface of the slide rod 71. One end of the spring 73 is fixed on the side of the arc-shaped anti-slip plate 72, and the other end of the spring 73 is fixed on the circumferential surface of the rotating tube 52. By setting the fixing component 7, the ball cage to be tested can be sleeved on the circumferential surface of the rotating tube 52 during use. Then, the inner ring of the ball cage is fixed by the fixing component 7. The rotating tube 52 is rotated by setting the toggle component 6. The ball cage to be tested is supported by setting the support component 5.

[0027] Among them, temperature sensor 2 is bidirectionally electrically connected to an external PLC controller.

[0028] Wherein: a baffle 9 is hinged to the front side of the box body 1, a handle 10 is fixed to the front side of the baffle 9, a sealing rubber frame 11 is fixed to the rear side of the baffle 9, a groove is opened on the front side of the box body 1, and the sealing rubber frame 11 is snapped into the inside of the groove, so that the box body 1 is sealed by setting the baffle 9 and the sealing rubber frame 11.

[0029] Among them, an observation port is provided on the front side of the baffle 9, and a transparent plate 12 is fixed inside the observation port. The baffle 9 makes it convenient for users to observe the situation inside the box 1.

[0030] The working principle of the low-temperature test chamber provided by this utility model is as follows: First, open the baffle 9 and attach the ball cage to be tested to the upper end of the rotating tube 52. Start the electric telescopic rod 81 of the extrusion assembly 8 to push the support rod 83 and the extrusion cone 84 on the fixed plate 82 to rise. The inclined surface of the cone forces the four sliding rods 71 ​​in the rotating tube 52 to slide outward, driving the arc-shaped anti-slip plate 72 to press tightly against the inner ring of the ball cage. The spring 73 is compressed to provide continuous clamping force. Since the outer ring of the ball cage is heavy and not actively fixed, only the inner ring rotates synchronously with the rotating tube 52 during the test. The outer ring remains stationary due to its own weight and the contact friction with the placement plate 51, accurately simulating the relative motion state of the inner and outer rings of the ball cage under low-temperature conditions. Before the test, the condenser 3 is connected to the external refrigeration system through the connecting flange ring 4 to circulate the low-temperature medium to quickly reduce the internal temperature of the chamber 1. The temperature sensor 2 monitors the internal temperature of the chamber 1 in real time and feeds it back to the external PLC controller, dynamically... Adjust the cooling output to ensure that the temperature inside chamber 1 is uniform and stable at the set threshold. During the test, the motor 61 is started by the external PLC controller. The sprocket 62 is linked by the second chain 64 to the second sprocket ring 65 of the five rotating tubes 52 on the front side, driving the rotating tubes 52 to rotate. The first sprocket ring 53 at the bottom of each row of rotating tubes 52 drives the three rotating tubes 52 in the same row to rotate synchronously through the first chain 54, realizing the independent and coordinated drive of the inner rings of the five rows of fifteen ball cages. The inner rings of the ball cages continue to rotate at low temperature. At this time, the appearance phenomena such as frost on the outer ring and grease migration are observed through the transparent plate 12. Combined with the temperature change curve of the temperature sensor 2, the low temperature dynamic performance of the ball cage is comprehensively evaluated. After the test is completed, the electric telescopic rod 81 retracts, the pressing cone 84 is disengaged from the slide rod 71, the spring 73 rebounds and the arc-shaped anti-slip plate 72 is reset, the inner rings of the ball cage are released from fixation, and the operator can open the baffle 9 through the handle 10 to remove all the test ball cages in batches, ready for the next round of testing.

[0031] It is worth noting that the external PLC controller disclosed in the above embodiments is specifically a Siemens S7-200, the motor 61 can be a 1LE0003 three-phase asynchronous motor, the electric telescopic pole 81 can be a TGC-A high-thrust electric telescopic pole, and the temperature sensor 2 can be freely configured according to the actual application scenario. The external PLC controller controls the operation of the motor 61 and the electric telescopic pole 81 using methods commonly used in the prior art.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A low-temperature test chamber, characterized in that: Includes the housing (1) and the support components (5); Box (1): A temperature sensor (2) is installed on the left side inside the box (1). A condenser (3) is fixed on the rear side inside the box (1). Two corresponding openings are opened on the left side of the box (1). The two ends of the condenser (3) are fixed inside the two openings respectively. Two connecting flange rings (4) are fixed on the circumferential surface of the condenser (3). An extrusion assembly (8) is installed on the lower side inside the box (1). Support component (5): includes a placement plate (51), a rotating tube (52), a first sprocket ring (53), and a first chain (54). There are five placement plates (51), which are fixed together. The placement plate (51) on the left side is fixed inside the box (1) on the left side. The upper side of the placement plate (51) has three corresponding rotating holes. The rotating tube (52) is rotatably connected inside the rotating holes. The lower end of the circumferential surface of the rotating tube (52) is fixed with a first sprocket ring (53). The three first sprocket rings (53) are connected by two first chains (54). The right side of the placement plate (51) is equipped with a toggle component (6). The toggle component (6) is connected to the five rotating tubes (52) on the front side. The upper end of the squeezing component (8) is located inside all the rotating tubes (52). The upper end of the rotating tube (52) is equipped with a fixing component (7). Wherein: the temperature sensor (2) is bidirectionally electrically connected to an external PLC controller.

2. The low-temperature test chamber according to claim 1, characterized in that: The actuation assembly (6) includes a motor (61), a sprocket (62), a mounting bracket (63), a second chain (64), and a second sprocket ring (65). The mounting bracket (63) is fixed to the right side of the right side of the placement plate (51). The mounting bracket is fixed to the right side inside the housing (1). The motor (61) is mounted on the upper side of the mounting bracket. The sprocket (62) is fixed on the output shaft of the motor (61). The second sprocket ring (65) is fixed on the circumferential surface of the five rotating tubes (52) on the front side. Two adjacent second sprocket rings (65) are connected by the second chain (64). The sprocket (62) is connected to the second sprocket ring (65) on the right side by the second chain (64). The input end of the motor (61) is electrically connected to the output end of the external PLC controller.

3. The low-temperature test chamber according to claim 1, characterized in that: The fixing component (7) includes a slide rod (71), an arc-shaped anti-slip plate (72), and a spring (73). The upper end of the circumferential surface of the rotating tube (52) is provided with four corresponding sliding holes. The slide rod (71) is slidably connected inside the sliding holes. The arc-shaped anti-slip plate (72) is fixed on the end face of the slide rod (71) outside the rotating tube (52). The spring (73) is sleeved on the circumferential surface of the slide rod (71). One end of the spring (73) is fixed on the side of the arc-shaped anti-slip plate (72), and the other end of the spring (73) is fixed on the circumferential surface of the rotating tube (52).

4. A low-temperature test chamber according to claim 3, characterized in that: The extrusion assembly (8) includes an electric telescopic rod (81), a fixed plate (82), a support rod (83), and an extrusion cone (84). Two corresponding electric telescopic rods (81) are installed on the lower side inside the housing (1). The fixed plate (82) is fixed on the telescopic arm of the two electric telescopic rods (81). The upper side of the fixed plate (82) is fixed with evenly distributed support rods (83). The upper end of the support rod (83) is located inside the rotating tube (52). The upper end of the support rod (83) is fixed with an extrusion cone (84). The surface of the extrusion cone (84) is in contact with the end face of the four sliding rods (71) located inside the rotating tube (52). The input end of the electric telescopic rod (81) is electrically connected to the output end of an external PLC controller.

5. A low-temperature test chamber according to claim 1, characterized in that: A baffle (9) is hinged to the front side of the box (1), a handle (10) is fixed to the front side of the baffle (9), a sealing rubber frame (11) is fixed to the rear side of the baffle (9), a groove is provided on the front side of the box (1), and the sealing rubber frame (11) is snapped into the inside of the groove.

6. A low-temperature test chamber according to claim 5, characterized in that: An observation port is provided on the front side of the baffle (9), and a transparent plate (12) is fixed inside the observation port.

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