Torque-adjustable rollover torque testing equipment for rotary speed reducer

Abstract

The utility model relates to a torque-adjustable rollover torque testing device for a rotary speed reducer, which comprises an operating platform (1), the operating platform (1) is provided with a rotary speed reducer (2), one side of the rotary speed reducer (2) is provided with a hydraulic motor (3), the top of the rotary speed reducer (2) is provided with a suspension arm (4), the suspension arm (4) is transversely arranged, and the hydraulic motor (3) is connected with the hydraulic motor (3). A lifting push rod (8) is arranged below the lifting arm (4) and arranged in the vertical direction, and the upper end of the lifting push rod (8) is connected with the lifting arm (4). The moment-adjustable rollover moment testing equipment for the rotary speed reducer can solve the problems that in the prior art, the rollover moment cannot be changed, the number of suspension arms and counter weights is large, the occupied area is large, safety is not achieved, and the axial load cannot be increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotary reducer overturning moment test equipment of adjustable torque belongs to rotary reducer test technical field. BACKGROUND

[0002] In chassis rotation structure such as aerial working truck, truck-mounted crane, rotary reducer is widely used by virtue of high overturning moment, large torque and other characteristics. But due to the complexity and particularity of each working condition, the performance test of rotary reducer is necessary. Among them, the overturning moment test is one of the most important tests in performance test.

[0003] The working principle of the existing rotary reducer overturning moment test is as shown in Figure 1

[0004] The rotary reducer and the boom are horizontally fixed on the operation table, and the counterweight is added to the other end of the boom. There is eccentricity between the counterweight and the center shaft of the rotary reducer, and under the action of the gravity of the counterweight, a fixed overturning moment is obtained on the rotary reducer. Finally, the hydraulic station supplies oil, the hydraulic motor works, and under the drive of the hydraulic motor, the rotary reducer rotates, and the whole boom and the counterweight also rotate. It has the following shortcomings:

[0005] 1. In actual working condition, the overturning moment value is constantly changing during the chassis rotation process, and the overturning moment value in the current overturning moment test is fixed, which cannot perfectly simulate the field working condition.

[0006] 2. For the overturning moment test of different models of devices, the size of the tested overturning moment is different, which will lead to the different length of the corresponding boom and the weight of the counterweight, greatly increasing the number of test tools.

[0007] 3. In the current overturning moment test, the boom and the counterweight block rotate, which occupies a large area and increases the safety hazard.

[0008] 4. In actual working condition, the rotary reducer bears the overturning moment and also bears the axial load, and the current overturning moment test cannot increase the axial load. UTILITY MODEL CONTENTS

[0009] The utility model solves the technical problems in the prior art, provides a rotary reducer overturning moment test equipment of adjustable torque, which can solve the problems of the prior art, such as the inability to change the overturning moment, the large number of booms and counterweights, the large area occupied, the insecurity and the inability to increase the axial load.

[0010] ​The utility model discloses a technical scheme that solves the above problems adopts, and its technical scheme is: a kind of torque-adjustable slewing reducer tipping moment test equipment, it includes operation platform, the operation platform is provided with slewing reducer, one side of the slewing reducer is provided with hydraulic motor, the top of the slewing reducer is provided with crane arm, the crane arm is arranged along transverse, lifting push rod is arranged below the crane arm, the lifting push rod is arranged along vertical, the lifting push rod upper end is connected with crane arm.

[0011] Optionally, a pressure sensor is arranged between the lifting push rod and the crane arm.

[0012] Optionally, the slewing reducer includes a base, the base includes a raceway and a shaft housing, a first slewing bearing is arranged in the raceway, the first slewing bearing includes a first outer ring and a first inner ring, a first rolling element is arranged between the first outer ring and the first inner ring, a worm is arranged in the shaft housing, the worm cooperates with the first outer ring, and the worm is driven by the hydraulic motor.

[0013] Optionally, a second slewing bearing is arranged above the slewing reducer, the second slewing bearing includes a second outer ring and a second inner ring, and a second rolling element is arranged between the second outer ring and the second inner ring.

[0014] Optionally, the second inner ring and the first outer ring are connected by bolts; a lower mounting plate is arranged below the slewing reducer, the lower mounting plate and the first inner ring are connected by bolts, and the crane arm, the second outer ring and the lower mounting plate are connected by a fixing rod.

[0015] Optionally, a first spacer ring is arranged between the second inner ring and the first outer ring; and a second spacer ring is arranged between the lower mounting plate and the first inner ring.

[0016] Optionally, a counterweight is arranged on the top of the crane arm, and the counterweight is located directly above the slewing reducer.

[0017] Optionally, a hydraulic station is arranged on one side of the hydraulic motor, and the hydraulic station and the hydraulic motor are connected by a hydraulic pipeline.

[0018] Optionally, an electric control box is arranged on one side of the lifting push rod, and the electric control box and the lifting push rod are connected by a control circuit.

[0019] Optionally, a base is arranged below the operation platform, and the operation platform, the hydraulic station, the electric control box and the lifting push rod are arranged on the base.

[0020] Compared with the prior art, the utility model has the advantages that:

[0021] 1. The crane arm of the utility model is fixed and does not move, thereby reducing the test floor area.

[0022] 2、The tilting moment is completely provided by the push rod, the push rod can provide different thrust, so different sizes of tilting moment can be obtained, and the number of hanger arms, counterweights and other toolings is reduced;

[0023] 3、The thrust of the push rod and the corresponding tilting moment can be changed as required, which is more similar to the actual site working condition stress situation, and the simulation is more perfect;

[0024] 4、The hanger arm can be placed above the counterweight, providing axial load, which is more similar to the actual site working condition stress situation, and the simulation is more perfect. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the existing rotary reducer tilting moment test equipment.

[0026] Figure 2 The utility model discloses a rotary reducer tilting moment test equipment's structural diagram of adjustable moment.

[0027] Among them:

[0028] Operation platform 1

[0029] Rotary reducer 2

[0030] Hydraulic motor 3

[0031] Hanger arm 4

[0032] Counterweight 5

[0033] Hydraulic station 6

[0034] Hydraulic pipeline 7

[0035] Lifting push rod 8

[0036] Pressure sensor 9

[0037] Second rotary support 10

[0038] Lower mounting plate 11

[0039] Fixed rod 12

[0040] First spacer ring 13

[0041] Second spacer ring 14

[0042] Electric control box 15

[0043] Control circuit 16

[0044] Base 17. DETAILED DESCRIPTION

[0045] The utility model is further described in detail below with reference to the drawings.

[0046] As Figure 2 The torque-adjustable rotary reducer tilting torque testing equipment in the embodiment includes an operation table 1, the operation table 1 is provided with a rotary reducer 2, one side of the rotary reducer 2 is provided with a hydraulic motor 3, the top of the rotary reducer 2 is provided with a jib 4, the jib 4 is arranged along the transverse direction, a lifting push rod 8 is arranged below the jib 4, the lifting push rod 8 is arranged along the vertical direction, and the upper end of the lifting push rod 8 is connected with the jib 4.

[0047] A pressure sensor 9 is arranged between the lifting push rod 8 and the jib 4.

[0048] The rotary reducer 2 includes a base, the base includes a raceway and a shaft housing (not shown in the figure), a first rotary support is arranged in the raceway, the first rotary support includes a first outer ring and a first inner ring, a first rolling element is arranged between the first outer ring and the first inner ring, a worm is arranged in the shaft housing, the worm is matched with the first outer ring, and the worm is driven by the hydraulic motor 3.

[0049] A second rotary support 10 is arranged above the rotary reducer 2, the second rotary support 10 includes a second outer ring and a second inner ring, and a second rolling element is arranged between the second outer ring and the second inner ring.

[0050] The second inner ring and the first outer ring are connected by bolts; a lower mounting plate 11 is arranged below the rotary reducer 2, the lower mounting plate 11 and the first inner ring are connected by bolts, and the jib 4, the second outer ring and the lower mounting plate 11 are connected by a fixing rod 12.

[0051] A first spacer ring 13 is arranged between the second inner ring and the first outer ring.

[0052] A second spacer ring 14 is arranged between the lower mounting plate 11 and the first inner ring.

[0053] A counterweight 5 is arranged at the top of the jib 4, and the counterweight 5 is located directly above the rotary reducer 2.

[0054] A hydraulic station 6 is arranged on one side of the hydraulic motor 3, and the hydraulic station 6 and the hydraulic motor 3 are connected by a hydraulic pipeline 7.

[0055] An electric control box 15 is arranged on one side of the lifting push rod 8, and the electric control box 15 and the lifting push rod 8 are connected by a control line 16.

[0056] A base 17 is provided below the operating console 1, and the operating console 1, hydraulic station 6, electrical control box 15 and lifting push rod 8 are all mounted on the base 17.

[0057] Working principle:

[0058] like Figure 2 As shown, the rotary reducer to be tested is placed horizontally on the operating platform. A slewing bearing structure is added between the rotary reducer and the boom. A push rod is fixed to the other end of the boom, and a counterweight is placed on top of the boom.

[0059] The test begins, the hydraulic motor starts, and the rotary reducer begins to rotate. However, due to the presence of the second slewing bearing and the fixed rod, the boom and the counterweight above it are fixed in the initial position and do not need to rotate.

[0060] The axial load of the rotary reducer is provided by the counterweight;

[0061] The overturning moment M of the rotary reducer is provided by the push rod. The magnitude of the overturning moment M is equal to the push force F of the push rod multiplied by the distance L from the point of application of force to the center of the rotary reducer. Therefore, different overturning moments M can be achieved by changing the magnitude of the push force F.

[0062] The magnitude of the push rod's thrust F is detected by a pressure sensor and controlled by an electrical control box. Through the control of the electrical control box, the thrust F can be changed in a reciprocating pattern as required, ultimately achieving a reciprocating pattern in the overturning moment M during the test.

[0063] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A torque-adjustable swing-type retarder rollover torque testing device, characterized in that: It include operation platform (1), operation platform (1) is provided with rotary reducer (2), one side of rotary reducer (2) is provided with hydraulic motor (3), the top of rotary reducer (2) is provided with jib (4), jib (4) is arranged along the transverse direction, the lower portion of jib (4) is provided with lifting push rod (8), lifting push rod (8) is arranged along the vertical direction, the upper end of lifting push rod (8) is connected with jib (4).

2. The moment-adjustable swing-type retarder rollover moment testing apparatus according to claim 1, characterized in that: Pressure sensor (9) is arranged between lifting push rod (8) and jib (4).

3. The moment-adjustable swing-type retarder roll-over moment testing apparatus of claim 1, wherein: Rotary reducer (2) includes base, base includes seat ring and shaft housing, first rotary supporting is arranged in seat ring, first rotary supporting includes first outer ring and first inner ring, first rolling element is arranged between first outer ring and first inner ring, worm is arranged in shaft housing, worm is matched with first outer ring, worm is driven by hydraulic motor (3).

4. The moment-adjustable swing-type retarder roll-over moment testing apparatus of claim 3, wherein: Second rotary supporting (10) is arranged above rotary reducer (2), second rotary supporting (10) includes second outer ring and second inner ring, second rolling element is arranged between second outer ring and second inner ring.

5. The moment adjustable slewing reducer rollover moment test device according to claim 4, characterized in that: Second inner ring and first outer ring are connected by bolts; lower mounting plate (11) is arranged below rotary reducer (2), lower mounting plate (11) and first inner ring are connected by bolts, jib (4), second outer ring and lower mounting plate (11) are connected by fixing rod (12).

6. The moment adjustable slewing reducer rollover moment test device according to claim 5, characterized in that: First spacer ring (13) is arranged between second inner ring and first outer ring; second spacer ring (14) is arranged between lower mounting plate (11) and first inner ring.

7. The moment adjustable slewing reducer rollover moment test device according to claim 1, characterized in that: Counterweight (5) is arranged on the top of jib (4), counterweight (5) is located directly above rotary reducer (2).

8. The moment adjustable slewing reducer rollover moment test device according to claim 1, characterized in that: Hydraulic station (6) is arranged on one side of hydraulic motor (3), hydraulic station (6) and hydraulic motor (3) are connected by hydraulic pipeline (7).

9. The moment adjustable slewing reducer rollover moment test device according to claim 8, characterized in that: Electric control box (15) is arranged on one side of lifting push rod (8), electric control box (15) and lifting push rod (8) are connected by control circuit (16).

10. The moment adjustable slewing reducer rollover moment test device according to claim 9, characterized in that: Base (17) is arranged below operation platform (1), operation platform (1), hydraulic station (6), electric control box (15) and lifting push rod (8) are arranged on base (17).

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