A test device for the slewing speed of a shovel

Abstract

The utility model relates to excavator performance test technical field, concretely relates to a kind of testing device of excavator slewing speed, including upper frame and lower frame, the lower fixed connection of upper frame has first slewing bearing, the upper fixed connection of lower frame has second slewing bearing, the first slewing bearing is rotatably connected with second slewing bearing, the bottom of upper frame is equipped with cover, the edge of cover is equipped with adjusting assembly, encoder is equipped on adjusting assembly, the top of encoder is equipped with leather wheel, leather wheel is contact connection with second slewing bearing.The utility model not only improves the accuracy of test, also guarantees the safety of staff.

Description

Technical Field

[0001] This utility model relates to the field of excavator performance testing technology, specifically to a device for testing the swing speed of an excavator. Background Technology

[0002] Swing speed testing is a crucial indicator in excavator testing, serving as a vital parameter for verifying the performance of the main pump and motor. Uncontrolled swing speed (too fast or too slow) can cause the equipment to rotate unexpectedly or fail to stop in time, easily leading to serious collisions and endangering the safety of the operator, surrounding personnel, and the equipment itself.

[0003] Currently, the rotation speed is mainly timed using a stopwatch, but the operator cannot accurately start and stop the handle at the test starting point, resulting in poor test accuracy. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a testing device for excavator rotation speed, which not only improves the accuracy of the test but also ensures the safety of the workers.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a testing device for the swing speed of an excavator, comprising an upper frame and a lower frame, wherein a first slewing bearing is fixedly connected to the lower part of the upper frame, and a second slewing bearing is fixedly connected to the upper part of the lower frame, the first slewing bearing and the second slewing bearing are rotatably connected, a cover plate is provided at the bottom of the upper frame, an adjustment component is provided at the edge of the cover plate, an encoder is provided on the adjustment component, a pulley is provided on the top of the encoder, and the pulley is in contact with the second slewing bearing.

[0006] Furthermore: the adjustment assembly includes a support, on which a first bracket is vertically mounted, and a second bracket is vertically mounted on the top of the first bracket, the second bracket being fixedly connected to the cover plate by bolts.

[0007] Furthermore, the encoder is mounted on a support.

[0008] Furthermore: the support is provided with a first column, the first column has a plurality of first threaded holes, the first bracket is sleeved on the first column and connected to the first column by bolts, the first bracket is vertically provided with a second column, the second column has a plurality of second threaded holes evenly provided, the second bracket is sleeved on the second column and connected to the second column by bolts, so as to facilitate full contact between the pulley and the second slewing bearing.

[0009] Furthermore: a first groove is provided at the bottom of the pulley, a connecting plate is fixedly connected in the first groove, a second groove is provided at the bottom of the connecting plate, and a connecting sleeve is provided in the second groove.

[0010] Furthermore: a keyway is provided on the inner wall of the second groove, and a key is provided on the outer wall of the connecting sleeve, with a clearance fit between the key and the keyway.

[0011] Furthermore, the encoder has a connecting shaft on its top, and the connecting shaft is fixed to the coupling sleeve by a set screw.

[0012] Furthermore, the pulley is made of polyurethane rubber to prevent slippage with the second slewing bearing.

[0013] Furthermore, the encoder transmits data back to the computer via CANH and CANL.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The excavator rotation speed testing device of this utility model not only improves the testing accuracy, but also ensures the safety of the workers; 2. This utility model, by adjusting the settings of the components, can be applied to various models of excavators, has a wide range of applications, and can be used to test the swing speed of various models; 3. The excavator swing speed testing device of this utility model can effectively detect the performance of the excavator's main pump and motor, ensure work efficiency, and ensure the safe operation of the excavator. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the excavator rotation speed testing device of this utility model; Figure 2 This is a schematic diagram of the adjustment component structure of the excavator swing speed testing device of this utility model; Figure 3 This is a schematic diagram of the connection structure between the editor and the drum of the excavator swing speed testing device of this utility model; Figure 4 This is a schematic diagram of the bottom structure of the connecting plate of the excavator swing speed testing device of this utility model; In the diagram: 1. First slewing bearing; 2. Second slewing bearing; 3. Cover plate; 4. Adjustment assembly; 41. Support; 42. First bracket; 43. Second bracket; 44. First support column; 45. First threaded hole; 46. Second support column; 47. Second threaded hole; 5. Encoder; 51. Connecting shaft; 6. Pulley; 7. First groove; 8. Connecting disc; 9. Second groove; 10. Coupling sleeve; 11. Keyway; 12. Key; 13. Set screw. Detailed Implementation

[0016] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] refer to Figures 1 to 2 A testing device for the swing speed of an excavator includes an upper frame and a lower frame. A first slewing bearing 1 is fixedly connected to the lower part of the upper frame, and a second slewing bearing 2 is fixedly connected to the upper part of the lower frame. The first slewing bearing 1 and the second slewing bearing 2 are rotatably connected. A cover plate 3 is provided at the bottom of the upper frame, and an adjustment component 4 is provided on the edge of the cover plate 3. An encoder 5 is provided on the adjustment component 4, and a pulley 6 is provided on the top of the encoder 5. The pulley 6 is in contact with the second slewing bearing 2.

[0018] The adjustment assembly 4 includes a support 41, a first bracket 42 is vertically mounted on the support 41, a second bracket 43 is vertically mounted on the top of the first bracket 42, and the second bracket 43 is fixedly connected to the cover plate 3 by bolts.

[0019] The encoder 5 is mounted on the support 41.

[0020] The support 41 is provided with a first support column 44, and the first support column 44 has a plurality of first threaded holes 45. The first bracket 42 is sleeved on the first support column 44 and connected to the first support column 44 by bolts. The first bracket 42 is vertically provided with a second support column 46, and the second support column 46 has a plurality of second threaded holes 47 evenly provided. The second bracket 43 is sleeved on the second support column 46 and connected to the second support column 46 by bolts, so that the position of the pulley 6 can be adjusted in the radial and lateral directions, ensuring that the pulley 6 is in full contact with the second slewing bearing 2.

[0021] The bottom of the pulley 6 has a first groove 7, in which a connecting plate 8 is fixedly connected. The bottom of the connecting plate 8 has a second groove 9, in which a connecting sleeve 10 is provided.

[0022] The inner wall of the second groove 9 is provided with a keyway 11, and the outer wall of the connecting sleeve 10 is provided with a key 12. The key 12 and the keyway 11 are fitted with a clearance, which effectively avoids damage to the encoder 5 when starting, stopping, or when the contact surface of the second slewing bearing 2 is uneven.

[0023] The encoder 5 has a connecting shaft 51 on its top, and the connecting shaft 51 is fixed to the connecting sleeve 10 by a set screw 13.

[0024] The pulley 6 is made of polyurethane rubber to prevent slippage with the second slewing bearing 2.

[0025] Encoder 5 transmits data back to the computer via CANH and CANL. The encoder's sampling frequency should be high, and the sampling data should not be less than 100 ms.

[0026] Working principle: When the excavator is performing slewing operations, the first slewing bearing 1 rotates with the upper frame, while the second slewing bearing 2 is connected to the lower frame and does not rotate. The upper frame drives the adjusting component 4 to rotate around the second slewing bearing 2 via the cover plate 3 and the pulley 6. The encoder 5 sends data to the computer in real time via CANH and CANL to calculate the diameter ratio of the second slewing bearing 2 to the pulley 6, and sets the resolution parameter (i.e., diameter ratio) in the message communication protocol between the encoder 5 and the computer, and outputs the slewing speed in real time.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A testing device for the swing speed of an excavator, comprising an upper frame and a lower frame, wherein a first slewing bearing (1) is fixedly connected to the lower part of the upper frame, and a second slewing bearing (2) is fixedly connected to the upper part of the lower frame, the first slewing bearing (1) and the second slewing bearing (2) are rotatably connected, and a cover plate (3) is provided at the bottom of the upper frame, characterized in that: The edge of the cover plate (3) is provided with an adjustment component (4), the adjustment component (4) is provided with an encoder (5), the top of the encoder (5) is provided with a pulley (6), and the pulley (6) is in contact with the second slewing bearing (2).

2. The excavator swing speed testing device according to claim 1, characterized in that: The adjustment component (4) includes a support (41), on which a first bracket (42) is vertically provided, and a second bracket (43) is vertically provided on the top of the first bracket (42). The second bracket (43) is fixedly connected to the cover plate (3) by bolts.

3. The excavator swing speed testing device according to claim 2, characterized in that: The encoder (5) is mounted on the support (41).

4. The excavator swing speed testing device according to claim 3, characterized in that: The support (41) is provided with a first support column (44), and the first support column (44) is provided with a plurality of first threaded holes (45). The first bracket (42) is sleeved on the first support column (44) and connected to the first support column (44) by bolts. The first bracket (42) is provided with a second support column (46) vertically. The second support column (46) is provided with a plurality of second threaded holes (47) evenly. The second bracket (43) is sleeved on the second support column (46) and connected to the second support column (46) by bolts, so that the pulley (6) can fully contact the second slewing bearing (2).

5. The excavator swing speed testing device according to claim 4, characterized in that: The bottom of the wheel (6) is provided with a first groove (7), and a connecting plate (8) is fixedly connected in the first groove (7). The bottom of the connecting plate (8) is provided with a second groove (9), and a connecting sleeve (10) is provided in the second groove (9).

6. The excavator swing speed testing device according to claim 5, characterized in that: The inner wall of the second groove (9) is provided with a keyway (11), and the outer wall of the connecting sleeve (10) is provided with a key (12), and the key (12) and the keyway (11) are fitted with a clearance.

7. The excavator swing speed testing device according to claim 6, characterized in that: The encoder (5) is provided with a connecting shaft (51) on the top, and the connecting shaft (51) is fixed to the coupling sleeve (10) by a set screw (13).

8. The excavator swing speed testing device according to claim 7, characterized in that: The pulley (6) is made of polyurethane rubber to prevent slippage with the second slewing bearing (2).

9. The excavator swing speed testing device according to claim 8, characterized in that: The encoder (5) transmits data back to the computer via CANH and CANL.

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