Vertical lifting test bench

Abstract

A vertical lifting test bench comprises a rack, and a driving mechanism, a loading seat, a swing arm mechanism and a pressure detection mechanism are assembled on the rack. And the loading seat is assembled on the rack in a sliding manner through a linear track. The driving mechanism comprises a motor, and the motor is connected with a speed reducer. One end of the swing arm mechanism is connected with the speed reducer, and the other end is hinged with the loading seat. The pressure detection mechanism comprises an electric cylinder, the electric cylinder is connected with a pressure sensor through a connecting disc, a pressure head is assembled on the pressure sensor, and the pressure head is assembled and connected with the loading seat. The pressure detection mechanism can accurately detect the radial bearing capacity of the speed reducer. Compared with the prior art, the utility model has the following beneficial effects: the detection precision and the detection efficiency are higher, and the detection is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting test machines for reducers, and in particular relates to a vertical lifting test platform. Background Art

[0002] In modern industrial production and product development, performance testing and verification of mechanical equipment is an important part of ensuring product quality and safety, especially in the fields of automobile, aerospace, heavy equipment manufacturing, etc., the reducer is a core transmission component, and its performance is directly related to the reliability and efficiency of the entire system. Therefore, the vertical lifting test bench, as an important testing equipment, is widely used in the dynamic performance evaluation of the reducer, including but not limited to the testing of key parameters such as gradual torque, radial load capacity and maximum lifting height.

[0003] However, most of the current vertical lift test benches used for speed reducer testing rely on traditional weight adjustment mechanisms for load control, which is to simulate different workloads by manually or semi-automatically adding or removing weights on the loading seat. The main disadvantages of this method include:

[0004] 1. Limited detection accuracy: Due to the reliance on manual adjustment of the counterweight, it is difficult to achieve fine control of the loading force, especially when high-precision, small-change dynamic load tests are required. The accuracy problem is particularly prominent, which directly restricts the accuracy and reliability of the reducer performance evaluation.

[0005] 2. Low testing efficiency: Each time the test conditions are adjusted, the ongoing test needs to be interrupted to physically increase or decrease the weight. This series of steps is cumbersome and time-consuming, which seriously affects the consistency and efficiency of the overall testing process and is not conducive to batch testing or rapid feedback of test results.

[0006] 3. Complex and inconvenient operation: Manually adjusting the loading weight not only increases the workload of operators, but also prolongs the preparation time and reduces the flexibility of the experiment. For the testing environment that requires frequent adjustment of test parameters to adapt to different models or specifications of reducers, the operation mode under the existing technology is particularly inconvenient.

[0007] In view of the above situation, a new vertical lifting test bench is developed to fundamentally solve the problems of low detection accuracy, low efficiency and inconvenient operation. It is of great significance to improve the quality and efficiency of reducer performance testing and promote technological progress and industrial upgrading in the machinery manufacturing industry. Utility Model Content

[0008] In order to solve the above technical problems, the utility model solves them through the following technical solutions.

[0009] A vertical lifting test bench comprises a frame, on which a driving mechanism, a loading seat, a swing arm mechanism and a pressure detection mechanism are mounted. The loading seat is slidably mounted on the frame via a linear track. The driving mechanism comprises a motor, and the motor is connected to a reducer. One end of the swing arm mechanism is connected to the reducer, and the other end is hinged to the loading seat. The pressure detection mechanism comprises an electric cylinder, and the electric cylinder is connected to a pressure sensor via a connecting plate, and a pressure head is mounted on the pressure sensor, and the pressure head is assembled and connected to the loading seat. The pressure detection mechanism can accurately detect the radial bearing capacity of the reducer.

[0010] Preferably, the swing arm mechanism comprises a connecting rod and a crankshaft, and the connecting rod is hinged with the loading seat. The crankshaft is provided with an eccentric shaft portion and a center hole, and the output shaft of the reducer is fixedly assembled with the center hole. The connecting rod is provided with an assembly groove, and a through assembly hole with a hole diameter smaller than the assembly groove is provided at the bottom center of the assembly groove, and the eccentric shaft portion extends into the assembly groove through the assembly hole. The eccentric shaft portion is sequentially sleeved with a sleeve and a clamping sleeve, and the sleeve is sleeved with a bearing, and the bearing is assembled at the bottom of the assembly groove. The clamping sleeve is sleeved with a rigid sleeve, and one end face of the clamping sleeve abuts against the sleeve. The other end face of the clamping sleeve is higher than the end face of the eccentric shaft portion, so that the inner wall of the clamping sleeve cooperates with the end face of the eccentric shaft portion to form a groove, and a block is assembled in the groove. This design can effectively prevent the structure connecting the swing arm mechanism and the driving mechanism from being deformed or displaced under the action of long-term dynamic loads, and ensure the stability of the connection.

[0011] Preferably, the outer diameter of the block is smaller than the outer diameter of the eccentric shaft. This design is intended to enhance the anchoring effect of the expansion sleeve on the eccentric shaft, ensure that most of the locking stress can be concentrated on the eccentric shaft, so as to improve the stability and reliability of the connection, and optimize the force transmission efficiency, thereby extending the service life of the component and reducing the potential operating failure rate.

[0012] Preferably, a limiting column is provided on the pressure head, a limiting groove is provided on the side of the limiting column, and a connecting groove is provided on the loading seat. During installation, the limiting column extends into the connecting groove, and the end face of the pressure head abuts against the surface of the loading seat. Two groups of pin grooves are provided on one side of the loading seat, which penetrate the connecting groove horizontally. Pillar pins are installed in the pin grooves. The two groups of pillar pins are located on both sides of the limiting column and in the limiting groove. This design can conveniently assemble and connect the loading seat and the pressure head, and the assembly is firm, which can prevent the loading seat from falling vertically downward during the assembly process.

[0013] Preferably, the column diameter of the column pin is smaller than the width of the limit slot, which serves to avoid the problem of fluctuation in detection data caused by the swing arm mechanism being stuck during the startup phase of the drive mechanism, thereby improving the practicality and reliability of the test results.

[0014] Preferably, it also includes a mounting base for fixing the driving mechanism. The frame includes two groups of symmetrically distributed columns. The columns are provided with assembly holes. The mounting base is assembled and fixed with the assembly holes through fixing pins. This design can be easily disassembled and assembled, which is beneficial to the maintenance of the equipment.

[0015] Preferably, the number of the assembly holes is at least two groups distributed along the column, so that the mounting base can flexibly select a suitable assembly position for assembly and fixation through fixing pins to meet the needs of different experimental scenarios and facilitate maintenance and adjustment of the equipment.

[0016] Compared with the prior art, the utility model has the following beneficial effects: higher detection accuracy and detection efficiency, and more convenient detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the vertical lifting test bench.

[0018] Figure 2 This is the front view of the vertical lifting test bench.

[0019] Figure 3 It is the assembly diagram of the swing arm mechanism and the loading seat.

[0020] Figure 4 It is a partial cross-sectional view of the assembly of the pressure head and the loading seat.

[0021] Figure 5 This is a partial cross-sectional view of the assembly point of the reducer and crank mechanism.

[0022] The following is a description of the markings in the accompanying drawings of the specification:

[0023] 100, rack; 110, linear track; 120, mounting seat; 130, column; 131, assembly hole;

[0024] 200, driving mechanism;

[0025] 300, loading seat; 301, connecting groove; 302, pin groove;

[0026] 400, swing arm mechanism; 410, connecting rod; 420, crankshaft; 421, eccentric shaft; 422, center hole; 430, bushing; 440, bearing; 450, expansion sleeve; 460, steel sleeve; 470, blocking block;

[0027] 500, pressure detection mechanism; 510, electric cylinder; 520, connecting plate; 530, pressure sensor; 540, pressure head; 541, limiting column; 542, limiting groove. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] In the following embodiments, the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limitations on the present invention.

[0030] In the description of the present utility model, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and therefore cannot be understood as limiting the present utility model. In addition, the terms: first, second, etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present utility model, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] refer to Figures 1 to 5 A vertical lifting test bench includes a frame 100, on which a driving mechanism 200, a loading seat 300 and a swing arm mechanism 400 are mounted, and the loading seat 300 is slidably mounted on the frame 100 through a linear track 110. The driving mechanism 200 includes a motor, and the motor is connected to a reducer. One end of the swing arm mechanism 400 is connected to the reducer, and the other end is connected to the loading seat 300. The driving mechanism 200 drives the loading seat 300 to move up and down to simulate use, and the performance of the gradual torque, radial bearing capacity, and lifting height of the reducer can be verified.

[0032] Furthermore, the swing arm mechanism 400 includes a connecting rod 410 and a crankshaft 420, the crankshaft 420 is provided with an eccentric shaft 421 and a center hole 422, the output shaft of the reducer is fixedly assembled with the center hole 422, the eccentric shaft 421 is connected with the connecting rod 410, and the connecting rod 410 is hinged with the loading seat 300. The connecting rod 410 is provided with an assembly groove, and a through assembly hole 131 with a smaller hole diameter than the assembly groove is provided at the bottom center of the assembly groove, and the eccentric shaft 421 is assembled with the assembly groove through the assembly hole 131. The eccentric shaft 421 is sequentially mounted with a sleeve 430 and a tightening sleeve 450, and the sleeve 430 is mounted with a bearing 440, and the bearing 440 is assembled at the bottom of the assembly groove. The expansion sleeve 450 is covered with a steel sleeve 460. One end face of the expansion sleeve 450 abuts against the shaft sleeve 430. The expansion sleeve 450 can be fastened and assembled with the eccentric shaft 421 to fix the shaft sleeve 430 in the assembly groove to prevent the shaft sleeve 430 from moving outward during movement. The other end face of the expansion sleeve 450 is higher than the end face of the eccentric shaft 421, so that the inner wall of the expansion sleeve 450 cooperates with the end face of the eccentric shaft to form a groove, and a block 470 is installed in the groove. The function of the block 470 is to prevent the expansion sleeve 450 from deforming and failing.

[0033] The outer diameter of the block 470 is smaller than the outer diameter of the eccentric shaft 421. This design is intended to enhance the anchoring effect of the expansion sleeve 450 on the eccentric shaft 421, ensuring that most of the locking stress can be concentrated on the eccentric shaft 421, thereby improving the stability and reliability of the connection, and optimizing the force transmission efficiency, thereby extending the service life of the component and reducing the potential operating failure rate.

[0034] In order to ensure the detection accuracy and improve the applicability of the test machine, the vertical lifting test bench also includes a pressure detection mechanism 500, which includes an electric cylinder 510. The electric cylinder 510 preferably adopts a servo electric cylinder 510 to achieve precise position control, speed control and even torque control. The electric cylinder 510 is connected to a pressure sensor 530 through a connecting plate 520. A pressure head 540 is assembled on the pressure sensor 530, and the pressure head 540 is assembled and connected to the loading seat 300. The pressure detection mechanism 500 can accurately detect the radial bearing capacity of the reducer. A limiting column 541 is provided on the pressure head 540, and a limiting groove 542 is provided on the side of the limiting column 541. A connecting groove 301 is provided on the loading seat 300. When installed, the limiting column 541 extends into the connecting groove 301, and the end face of the pressure head 540 is against the surface of the loading seat 300. Two groups of pin slots 302 are disposed on one side of the loading seat 300 and extend horizontally through the connecting slot 301. Pillar pins are installed in the pin slots 302. The two groups of pillar pins are located on both sides of the limiting column 541 and in the limiting slot 542. This design can conveniently assemble and connect the loading seat 300 and the pressure head 540, and the assembly is firm, which can prevent the loading seat 300 from falling vertically downward during the assembly process.

[0035] Furthermore, the column diameter of the column pin is smaller than the width of the limiting groove 542. This design allows a certain relative movable space between the loading seat 300 and the pressure head 540, which is used to avoid the problem of fluctuation of the detection data caused by the jamming of the swing arm mechanism 400 during the startup phase of the driving mechanism 200, thereby improving the practicality and reliability of the test results.

[0036] In addition, the vertical lifting test bench also includes a mounting seat 120 for fixing the driving mechanism 200. The frame 100 includes two groups of symmetrically distributed columns 130. The columns 130 are provided with assembly holes 131. The mounting seat 120 is assembled and fixed with the assembly holes 131 by fixing pins. This design can facilitate the disassembly and assembly of the mounting seat 120, which is beneficial to the maintenance of the equipment. The number of the assembly holes 131 is at least two groups distributed along the columns 130, so that the mounting seat 120 can be flexibly selected through the fixing pins. The appropriate assembly position is assembled and fixed to meet the needs of different experimental scenarios, and it is also convenient for the maintenance and adjustment of the equipment.

[0037] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A vertical lifting test bench, comprising a frame (100), on which a driving mechanism (200), a loading seat (300), a swing arm mechanism (400) and a pressure detection mechanism (500) are mounted; the loading seat (300) is slidably mounted on the frame (100) via a linear track (110); the driving mechanism (200) comprises a motor, and the motor is connected to a reducer; one end of the swing arm mechanism (400) is connected to the reducer, and the other end is hinged to the loading seat (300); characterized in that The pressure detection mechanism (500) comprises an electric cylinder (510), the electric cylinder (510) being connected to a pressure sensor (530) via a connection plate (520), the pressure sensor (530) being equipped with a pressure head (540), and the pressure head (540) being assembled and connected to a loading seat (300).

2. A vertical lifting test bench according to claim 1, characterized in that: The swing arm mechanism (400) comprises a connecting rod (410) and a crank shaft (420), wherein the connecting rod (410) is hinged to the loading seat (300); an eccentric shaft portion (421) and a center hole (422) are provided on the crank shaft (420), and the output shaft of the reducer is fixedly assembled with the center hole (422); an assembly groove is provided on the connecting rod (410), and a through assembly hole (131) having a smaller diameter than the assembly groove is provided at the center of the bottom of the assembly groove, and the eccentric shaft portion (421) extends into the assembly groove through the assembly hole (131); The eccentric shaft portion (421) is sequentially sleeved with a shaft sleeve (430) and a clamping sleeve (450); the shaft sleeve (430) is sleeved with a bearing (440), and the bearing (440) is assembled at the bottom of the assembly groove; the clamping sleeve (450) is sleeved with a rigid sleeve (460), and one end face of the clamping sleeve (450) abuts against the shaft sleeve (430); the other end face of the clamping sleeve (450) is higher than the end face of the eccentric shaft portion (421), so that the inner wall of the clamping sleeve (450) cooperates with the end face of the eccentric shaft portion (421) to form a groove, and a blocking block (470) is assembled in the groove.

3. A vertical lifting test bench according to claim 2, characterized in that: The outer diameter of the blocking block (470) is smaller than the outer diameter of the eccentric shaft portion (421).

4. A vertical lifting test bench according to claim 1, characterized in that: The pressure head (540) is provided with a limiting column (541), and a limiting groove (542) is provided on the side of the limiting column (541); the loading seat (300) is provided with a connecting groove (301); during installation, the limiting column (541) extends into the connecting groove (301), and the end surface of the pressure head (540) abuts against the surface of the loading seat (300); one side of the loading seat (300) is provided with two groups of pin grooves (302) that transversely penetrate the connecting groove (301), and column pins are installed in the pin grooves (302); the two groups of column pins are located on both sides of the limiting column (541) and in the limiting groove (542).

5. A vertical lifting test bench according to claim 4, characterized in that: The column diameter of the column pin is smaller than the width of the limiting groove (542).

6. The vertical lifting test bench according to claim 1, characterized in that: It also includes a mounting seat (120) for fixing the driving mechanism (200), the frame (100) includes two groups of symmetrically distributed columns (130), the columns (130) are provided with assembly holes (131), and the mounting seat (120) is assembled and fixed with the assembly holes (131) via fixing pins.

7. A vertical lifting test bench according to claim 6, characterized in that: The number of the assembly holes (131) is at least two groups distributed along the column (130).

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