Large-load slewing bearing test bed capable of rapidly replacing sample

Abstract

The utility model belongs to the technical field of slewing bearing performance test equipment, and particularly relates to a large-load slewing bearing test bed capable of quickly replacing a sample, which comprises a test platform and an upper platform, the upper platform is arranged on the test platform, a sliding assembly is arranged below the upper platform, and the sliding assembly is arranged on the test platform. A load test oil cylinder and an overturning test oil cylinder are arranged on the test platform, a cylinder body of the load test oil cylinder is installed on the test platform in a hinged mode, the end portion of a piston rod of the load test oil cylinder is hinged to the upper platform, and the end portion of a piston rod of the overturning test oil cylinder is connected with the upper platform. The upper platform is moved to one side through the sliding assembly, the upper platform can be moved to the original position after a test piece on the test platform is assembled, the upper platform does not need to be hoisted to one side through a crane / travelling crane, and the assembly time is greatly shortened; the structure is simple, the operation is convenient, and the test piece replacement efficiency of the large-load slewing bearing test bed is improved.

Description

Technical Field

[0001] The utility model relates to a large-load slewing bearing test bench capable of quickly replacing samples, and belongs to the technical field of slewing bearing performance testing equipment. Background Art

[0002] A large-load slewing bearing is a bearing that bears radial and axial loads. Different from the application scenarios of conventional bearings, the slewing bearing can bear extremely large loads, including forces and torques from all directions. Therefore, it is widely used in equipment and devices that need to bear heavy loads. During use, the large-load slewing bearing needs to bear long-term, continuous loads and overturning moments. Therefore, the service life of the large-load slewing bearing is closely related to its ability to bear loads and the size of the overturning moment. Before assembling the large-load slewing bearing, it is necessary to test it, apply continuous axial loads and overturning moments, and test its service life. The existing large-load slewing bearing test bench includes a test platform and an upper platform. The large-load slewing bearing is placed between the test platform and the upper platform. The large-load slewing bearing is driven to rotate by a driving gear. Cylinders are provided on both sides of the test platform. The cylinders are connected to the upper platform in a transmission manner. During the continuous rotation of the large-load slewing bearing, the axial load and overturning moment are applied to the test piece by pushing and pulling the cylinders on both sides.

[0003] Since the large-load slewing bearing is large in size, and is limited by the stroke of the oil cylinder, the space between the test bench and the upper platform is small. When replacing the specimen, the test piece cannot be directly placed in the test area due to the existence of the upper platform. A crane or a large-tonnage crane is required to lift the upper platform off, replace the test piece on the test bench, and then re-lift the upper platform to the original position, or replace the test piece by a large forklift. The disassembly and assembly cycle of the upper platform is long and expensive, and replacing the test piece by a forklift is difficult and unsafe. No matter which method is used to replace the test piece, it affects the efficiency and cost of the test. Therefore, a large-load slewing bearing test bench that can quickly replace specimens is needed. Utility Model Content

[0004] The utility model aims at the above-mentioned defects of the prior art and provides a large-load slewing bearing test bench capable of quickly replacing samples.

[0005] The utility model solves the above-mentioned technical problems with the following technical solutions: a large-load slewing bearing test bench capable of quickly replacing test specimens, wherein the upper platform is mounted on the test bench, a sliding assembly is provided below the upper platform, a load test cylinder and an overturning test cylinder are provided on the test bench, a cylinder body of the load test cylinder is mounted on the test bench, an end of a piston rod of the load test cylinder is hinged to the upper platform, and an end of a piston rod of the overturning test cylinder is connected to the upper platform.

[0006] The beneficial effects of the utility model are as follows: a sliding assembly is provided under the upper platform of the utility model, and the upper platform can slide on the test platform through the sliding assembly. When there is a test demand or the test sample needs to be replaced, the upper platform is moved to one side through the sliding assembly. After the test piece on the test platform is assembled, the upper platform can be moved back to its original position, and there is no need for a crane / trolley to lift the upper platform to one side, and the assembly time is greatly shortened; the load test cylinder of the utility model is hinged to the upper platform, for example, a pin connection, and the load test cylinder and the upper platform can be connected and separated by plugging and pulling the pin, so that the movement of the upper platform is not interfered by the load test cylinder, and the end of the overturning test cylinder of the utility model is connected to the upper platform, and the overturning test cylinder and the load test cylinder are independently controlled, and push / pull forces can be applied to the upper platform respectively, and then the push and pull forces of the overturning test cylinder and the load test cylinder are transmitted to the test piece on the test platform through the upper platform; the utility model has a simple structure and is easy to operate, which improves the efficiency of replacing test pieces on a large-load slewing bearing test bench.

[0007] On the basis of the above technical solution, the present invention can also make the following improvements:

[0008] Furthermore, the sliding assembly includes a plurality of sliding units, and the sliding units include guide rails and pulleys slidably mounted on the guide rails. The guide rails are mounted on the test platform, and the pulleys are arranged at the bottom of the upper platform.

[0009] Furthermore, the upper platform includes a first platform and a second platform, the end of the first platform is hinged to the middle of the second platform, and the first platform and the second platform form a T-shaped upper platform.

[0010] The beneficial effect of adopting the above-mentioned further technical solution is that the overturning moment is applied to the test piece by pushing the first platform and the second platform upwards through the overturning test cylinder, and the first platform and the second platform form a T-shaped upper platform. The length of the first platform can be changed by changing the length of the first platform, thereby changing the magnitude of the overturning moment applied to the test piece. Different overturning moments can be applied to the test piece by only one overturning test cylinder, and there is no need to change the magnitude of the overturning moment applied to the test piece by adjusting the specifications or number of the cylinders; the first platform and the second platform are hinged, for example, by a pin hinge, and the first platform and the second platform can be quickly separated and connected, so that the disassembly of the first platform is convenient.

[0011] Furthermore, the first platform includes at least two module platforms, the ends of adjacent module platforms are connected in sequence, and the module platforms at the ends of the first platform are hinged to the middle of the second platform.

[0012] The beneficial effect of adopting the above further technical solution is that the first platform is provided with a plurality of module platforms, and the module platforms can be quickly assembled through connecting parts, such as pin connections, so as to achieve rapid changes in the length of the first platform.

[0013] Furthermore, the sliding unit is provided with three groups, two detachable legs are symmetrically provided at the bottom of the second platform, and a detachable leg is provided at the bottom of the first platform, and the pulleys are rotatably mounted on the legs respectively.

[0014] The beneficial effect of adopting the above-mentioned further technical solution is that the pulley is installed at the bottom of the upper platform through the detachable legs, the legs and the pulley can be installed quickly, and the legs can be removed when the upper platform does not need to slide, avoiding the legs from interfering with the test process, and it is convenient to use and maintain.

[0015] Furthermore, the sliding assembly also includes a sliding drive mechanism.

[0016] Furthermore, the sliding drive mechanism includes a motor, which is mounted on the support leg at the bottom of the first platform, and the output shaft of the motor is drivingly connected to the pulley.

[0017] The beneficial effect of adopting the above further technical solution is that the pulley is driven to rotate by the motor, and the pulley moves on the guide rail, thereby realizing the movement of the upper platform.

[0018] Furthermore, a sample carrying platform is provided on the test platform, and the sample carrying platform is arranged below the second platform.

[0019] Furthermore, two load test cylinders are provided, and the two load test cylinders are symmetrically arranged on both sides of the sample bearing platform, and the piston rod ends of the two load test cylinders are hinged to the bottom of the second platform.

[0020] Furthermore, the overturning test cylinder is arranged below the module platform at an end of the first platform away from one end of the second platform, and the piston rod end of the overturning test cylinder is connected to the bottom of the module platform.

[0021] The beneficial effect of adopting the above-mentioned further technical scheme is that the existing test bench applies the overturning moment and load by pushing and pulling the cylinders on both sides of the specimen bearing platform, and the size of the overturning moment can only be determined by selecting the specifications of the cylinders. When a large load capacity is required, it can only be achieved by increasing the number of cylinders; while the first platform of the utility model is provided with multiple groups of module platforms, and the upper platform can adjust the length of the first platform by increasing or reducing the number of module platforms of the first platform. It is only necessary to set an overturning test cylinder at the bottom of the first platform, and cooperate with the installation position of the overturning test cylinder to realize the function of changing the upper platform force arm, and finally achieve the effect of adjusting the overturning moment without adjusting the specifications and number of cylinders. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from another angle;

[0024] Figure 3 It is a side view of the utility model;

[0025] Figure 4 It is a top view of the utility model.

[0026] The accompanying drawings are marked as follows: 1. test platform; 2. upper platform; 21. first platform; 22. second platform; 3. guide rail; 4. pulley; 5. support leg; 6. specimen bearing platform; 7. load test cylinder; 8. overturning test cylinder. DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0028] See also Figure 1-Figure 4 A large-load slewing bearing test bench capable of quickly replacing specimens comprises a test platform 1 and an upper platform 2, wherein the upper platform 2 is mounted on the test platform 1, a sliding assembly is provided below the upper platform 2, a load test cylinder 7 and an overturning test cylinder 8 are provided on the test platform 1, a cylinder body of the load test cylinder 7 is mounted on the test platform 1, a piston rod end of the load test cylinder 7 is hinged to the upper platform 2, a piston rod end of the overturning test cylinder 8 is connected to the upper platform 2, a cylinder body of the overturning test cylinder 8 is against the test platform 1, and no connecting piece is provided between the cylinder body of the overturning test cylinder 8 and the test platform 1.

[0029] The sliding assembly includes a plurality of sliding units, each of which includes a guide rail 3 and a pulley 4 slidably mounted on the guide rail 3 . The guide rail 3 is mounted on the test platform 1 , and the pulley 4 is arranged at the bottom of the upper platform 2 .

[0030] The upper platform 2 includes a first platform 21 and a second platform 22 . The end of the first platform 21 is hinged to the middle of the second platform 22 . The first platform 21 and the second platform 22 form a T-shaped upper platform 2 .

[0031] The first platform 21 includes at least two module platforms, and the ends of the adjacent module platforms are connected in sequence. The module platforms at the ends of the first platform 21 are hinged to the middle of the second platform 22 .

[0032] The sliding unit is provided with three groups. Two detachable legs 5 are symmetrically provided at the bottom of the second platform 22 . A detachable leg 5 is provided at the bottom of the first platform 21 . The pulleys 4 are rotatably mounted on the legs 5 .

[0033] The sliding assembly also includes a sliding drive mechanism.

[0034] The sliding drive mechanism includes a motor, which is mounted on the support leg 5 at the bottom of the first platform 21 , and the output shaft of the motor is drivingly connected to the pulley 4 .

[0035] The test platform 1 is provided with a sample carrying platform 6 , and the sample carrying platform 6 is arranged below the second platform 22 .

[0036] There are two load test cylinders 7 , which are symmetrically arranged on both sides of the sample bearing platform 6 , and the piston rod ends of the two load test cylinders 7 are hinged to the bottom of the second platform 22 .

[0037] The overturning test cylinder 8 is arranged below the module platform at one end of the first platform 21 away from the second platform 22, and the piston rod end of the overturning test cylinder 8 is connected to the bottom of the module platform.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A large-load slewing bearing test bench capable of quickly replacing specimens, comprising a test platform (1) and an upper platform (2), characterized in that: The upper platform (2) is installed on the test platform (1), a sliding assembly is provided below the upper platform (2), a load test cylinder (7) and an overturning test cylinder (8) are provided on the test platform (1), a cylinder body of the load test cylinder (7) is installed on the test platform (1), the end of the piston rod of the load test cylinder (7) is hinged to the upper platform (2), and the end of the piston rod of the overturning test cylinder (8) is connected to the upper platform (2).

2. The large load slewing bearing test bench capable of quickly replacing specimens according to claim 1 is characterized in that: The sliding assembly comprises a plurality of sliding units, wherein the sliding units comprise guide rails (3) and pulleys (4) slidably mounted on the guide rails (3); the guide rails (3) are mounted on the test platform (1); and the pulleys (4) are arranged at the bottom of the upper platform (2).

3. The large load slewing bearing test bench capable of quickly replacing specimens according to claim 2 is characterized in that: The upper platform (2) comprises a first platform (21) and a second platform (22); the end of the first platform (21) is hinged to the middle of the second platform (22); the first platform (21) and the second platform (22) form a T-shaped upper platform (2).

4. The large-load slewing bearing test bench capable of quickly replacing specimens according to claim 3 is characterized in that: The first platform (21) comprises at least two module platforms, the ends of adjacent module platforms are connected in sequence, and the module platforms at the ends of the first platform (21) are hinged to the middle of the second platform (22).

5. The large load slewing bearing test bench capable of quickly replacing specimens according to claim 4 is characterized in that: The sliding unit is provided in three groups. Two detachable legs (5) are symmetrically provided at the bottom of the second platform (22). A detachable leg (5) is provided at the bottom of the first platform (21). The pulleys (4) are rotatably mounted on the legs (5).

6. The large-load slewing bearing test bench capable of quickly replacing specimens according to claim 5 is characterized in that: The sliding assembly also includes a sliding drive mechanism.

7. The large-load slewing bearing test bench capable of quickly replacing specimens according to claim 6 is characterized in that: The sliding drive mechanism comprises a motor, which is mounted on the support leg (5) at the bottom of the first platform (21), and the output shaft of the motor is drivingly connected to the pulley (4).

8. The large-load slewing bearing test bench capable of quickly replacing specimens according to claim 7 is characterized in that: The test platform (1) is provided with a sample bearing platform (6), and the sample bearing platform (6) is arranged below the second platform (22).

9. The large-load slewing bearing test bench capable of quickly replacing specimens according to claim 8, characterized in that: Two load test cylinders (7) are provided, and the two load test cylinders (7) are symmetrically arranged on both sides of the sample bearing platform (6), and the piston rod ends of the two load test cylinders (7) are hinged to the bottom of the second platform (22).

10. The large-load slewing bearing test bench capable of quickly replacing specimens according to claim 9, characterized in that: The overturning test cylinder (8) is arranged below the die set at one end of the first platform (21) away from the second platform (22), and the piston rod end of the overturning test cylinder (8) is connected to the bottom of the die set.

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