Cab overturning test bed

Abstract

The utility model discloses a cab turnover test bed, which comprises a support frame, an electric pump and an electric control system, the electric pump and the electric control system are both arranged on the support frame, and the electric pump is electrically connected with the electric control system; the electric control system comprises a control cabinet, an electronic protractor and an electronic counter, and the electronic counter is arranged in the control cabinet and used for recording the number of times of overturning of the cab tool. The technical effects are that the electric control system controls the lifting of the jacking cylinder through the electric pump, so that the overturning of the cab tool can be controlled, and the situation that the cab needs to be overturned to be overhauled in the daily use process is simulated; the overturning times can be controlled through the electric control system, the conditions of the cab tool, the front suspension, the rear suspension and the jacking cylinder are observed in the overturning process, and after the cab tool is overturned for a fixed number of times, the conditions of the cab tool, the front suspension, the rear suspension and the jacking cylinder are observed and tested. Therefore, the durability of the cab tool, the front suspension, the rear suspension and the jacking cylinder can be reflected.

Description

Technical Field

[0001] The utility model relates to the technical field of rollover tests, in particular to a cab rollover test bench. Background Art

[0002] The cab is an important part of the body of a truck or special-purpose vehicle, and is where professional drivers work day and night. Its structure is directly related to the driver's safety, work efficiency and health. The cab generally adopts a metal thin shell structure and is flexibly connected to the frame. It does not bear load and is a non-load-bearing body. The cab suspension is a vehicle powertrain component used to reduce and control the transmission of engine vibration and also plays a supporting role. The cab suspension is an important device that determines the comfort of the vehicle.

[0003] At present, large trucks generally adopt a flip-up cab design, which can be easily turned over for maintenance when it needs to be inspected. During the normal inspection of the cab, the entire cab needs to be turned over. During the flipping process of the cab, the front and rear suspensions will also be subject to a certain load. It is difficult to test whether the front and rear suspensions can still work normally when the cab is flipped, and the durability of the body suspension cannot be guaranteed during actual use. Utility Model Content

[0004] To this end, the utility model provides a cab rollover test bench to solve the above-mentioned problems in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] According to a first aspect of the utility model, a cab rollover test bench comprises a support frame, an electric pump and an electric control system, wherein the electric pump and the electric control system are both mounted on the support frame, and the electric pump is electrically connected to the electric control system;

[0007] The cab tooling is arranged on the top of the support frame, and the bottom of the cab tooling is provided with a front suspension and a rear suspension, the front suspension includes a support and a fixing frame, the support is installed on the support frame, the fixing frame is installed on the bottom of the cab tooling, and the support is hinged to the fixing frame;

[0008] The fixing frame is hinged to the output end of the lifting cylinder, the lifting cylinder is tilted, one end of the lifting cylinder away from the output end is hinged to the supporting frame, and the lifting cylinder is connected to the electric pump;

[0009] The rear suspension is mounted on the support frame, and the top of the rear suspension abuts against the bottom of the cab tooling;

[0010] The electric control system includes a control cabinet, an electronic protractor and an electronic counter. The electronic counter is arranged in the control cabinet and is used to record the number of flipping times of the cab tooling. The electronic protractor is used to measure the flipping angle of the cab tooling.

[0011] Furthermore, it also includes an angle sensor, which is arranged on the hinge shaft between the support and the fixing frame, and the angle sensor is connected to the control cabinet.

[0012] Furthermore, the support frame is fixed on the ground.

[0013] Furthermore, the support frame adopts a truss structure.

[0014] Furthermore, the support frame includes a longitudinal beam and a transverse beam, the number of the longitudinal beams is two, the two longitudinal beams are arranged parallel to each other, and a plurality of transverse beams are arranged between the two longitudinal beams.

[0015] Furthermore, it also includes a counterweight, which is detachably arranged on the cab tooling.

[0016] Furthermore, the counterweight includes a plurality of counterweight blocks, and each of the counterweight blocks is independent of each other.

[0017] The utility model has the following advantages: the electronic control system controls the lifting and lowering of the jacking cylinder through the electric pump, thereby controlling the flipping of the cab tooling, thereby simulating the situation that the cab needs to be flipped for maintenance during daily use; the number of flipping times can be controlled by the electronic control system, and the conditions of the cab tooling, front suspension, rear suspension and jacking cylinder are observed during the flipping process, and after the cab tooling has been flipped a fixed number of times, the conditions of the cab tooling, front suspension, rear suspension and jacking cylinder are observed and tested, which can reflect the durability of the cab tooling, front suspension, rear suspension and jacking cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0020] Figure 1 A schematic diagram of the overall structure of a cab rollover test bench provided in some embodiments of the utility model.

[0021] In the figure: 1. support frame, 2. front suspension, 3. rear suspension, 4. support, 5. fixed frame, 6. lifting cylinder, 7. electric pump, 8. electronic control system, 9. cab tooling, 10. counterweight. DETAILED DESCRIPTION

[0022] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1

[0024] like Figure 1 As shown, a cab rollover test bench in the embodiment of the first aspect of the utility model comprises a support frame 1, an electric pump 7 and an electric control system 8, the electric pump 7 and the electric control system 8 are both mounted on the support frame 1, and the electric pump 7 is electrically connected to the electric control system 8;

[0025] The cab tooling 9 is arranged on the top of the support frame 1, and the front suspension 2 and the rear suspension 3 are arranged at the bottom of the cab tooling 9, the front suspension 2 includes a support 4 and a fixing frame 5, the support 4 is installed on the support frame 1, and the fixing frame 5 is installed at the bottom of the cab tooling 9, and the support 4 is hinged to the fixing frame 5, and specifically, the support 4 and the fixing frame 5 are connected by a hinge shaft;

[0026] The fixed frame 5 is hinged to the output end of the jacking cylinder 6, the jacking cylinder 6 is tilted, one end of the jacking cylinder 6 away from the output end is hinged to the support frame 1, the jacking cylinder 6 is connected to the electric pump 7, and the electric pump 7 is used to control the lifting and lowering of the jacking cylinder 6;

[0027] The rear suspension 3 is mounted on the support frame 1, and the top of the rear suspension 3 abuts against the bottom of the cab tooling 9;

[0028] The electric control system 8 includes a control cabinet, an electronic protractor and an electronic counter. The electronic counter is arranged in the control cabinet. The electronic counter is used to record the number of flipping times of the cab tooling 9 . The electronic protractor is used to measure the flipping angle of the cab tooling 9 .

[0029] In this embodiment, it should be noted that an angle sensor is also included. The angle sensor is arranged on the hinge shaft between the support 4 and the fixing frame 5, and the angle sensor is connected to the control cabinet.

[0030] Furthermore, the operation steps of the entire test bench during use are as follows:

[0031] S1. After the cab tooling 9 is installed, debug it to make the cab tooling 9 reach a static balance state; turn on the electric control switch to flip the cab tooling 9, use an electronic protractor to monitor the flip angle, and adjust the angle sensor to reach the angle required by the test;

[0032] S2. Turn on the electric control switch to carry out the flip test, and use an electronic counter to record the number of flips. When the number of times required by the test is reached, turn off the machine and the test is completed.

[0033] The test requirements are as follows:

[0034] 1. During the rollover test, the lifting cylinder 6 shall not leak oil, make abnormal noise, etc.; at the same time, the front suspension 2, the rear suspension 3 and the cab tooling 9 shall not make abnormal noise, deform, etc.

[0035] During the test, if any abnormal conditions such as unusual noise or deformation occur, the cause should be found out immediately. If necessary, the machine can be stopped for inspection and the test can be continued after the abnormality is eliminated.

[0036] 2. After the rollover test is completed, if the lifting cylinder 6 does not leak oil, make abnormal noise, etc., and the front suspension 2, the rear suspension 3 and the cab tooling 9 do not make abnormal noise, deform, etc., then the test result is qualified.

[0037] The technical effect achieved by this embodiment is as follows: the electronic control system 8 controls the lifting and lowering of the lifting cylinder 6 through the electric pump 7, thereby controlling the flipping of the cab tooling 9, thereby simulating the situation that the cab needs to be flipped over for maintenance during daily use; the number of flipping times can be controlled by the electronic control system 8, and the conditions of the cab tooling 9, the front suspension 2, the rear suspension 3 and the lifting cylinder 6 are observed during the flipping process. After the cab tooling 9 has been flipped a fixed number of times, the conditions of the cab tooling 9, the front suspension 2, the rear suspension 3 and the lifting cylinder 6 are observed and tested, which can reflect the durability of the cab tooling 9, the front suspension 2, the rear suspension 3 and the lifting cylinder 6.

[0038] Example 2

[0039] like Figure 1As shown, another cab rollover test bench provided in this embodiment has a structure including all the contents of embodiment 1, and only the different parts are described below.

[0040] In this embodiment, the support frame 1 is fixed on the ground. Specifically, the support frame 1 is fixed to the ground by anchor bolts, which can effectively ensure the stability of the entire test bench.

[0041] In this embodiment, it should be noted that the support frame 1 adopts a truss structure. Specifically, the support frame 1 includes a longitudinal beam and a transverse beam. There are two longitudinal beams. The two longitudinal beams are arranged parallel to each other. A plurality of transverse beams are arranged between the two longitudinal beams. The transverse beams are perpendicular to the longitudinal beams and are welded to each other. Specifically, the longitudinal beams and the transverse beams can be made of square steel or channel steel.

[0042] The technical effect achieved by this embodiment is: the support frame 1 adopts a truss structure, which has a simple structure, stable supporting performance, and is easy to process and manufacture.

[0043] Example 3

[0044] like Figure 1 As shown, another cab rollover test bench provided in this embodiment has a structure including all the contents of embodiment 1, and only the different parts are described below.

[0045] In this embodiment, a counterweight 10 is also included, and the counterweight 10 is detachably arranged on the cab tooling 9 .

[0046] In the present embodiment, it should be noted that the counterweight 10 includes a plurality of counterweight blocks, each of which is independent of each other, and each counterweight block is fixed to the cab tooling 9 via a hoop or a clamp.

[0047] The technical effect achieved by this embodiment is: by setting a counterweight 10, and the counterweight 10 includes a plurality of counterweight blocks, the load-bearing capacity of the cab tooling 9 and the performance of each mechanism of the cab tooling 9 under the load state can be tested by installing different numbers of counterweight blocks during use.

[0048] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

[0049] The terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

Claims

1. A cab rollover test bench, characterized in that: It comprises a support frame (1), an electric pump (7) and an electric control system (8), wherein the electric pump (7) and the electric control system (8) are both mounted on the support frame (1), and the electric pump (7) is electrically connected to the electric control system (8); The cab tooling (9) is arranged on the top of the support frame (1), and the bottom of the cab tooling (9) is provided with a front suspension (2) and a rear suspension (3), the front suspension (2) comprises a support (4) and a fixing frame (5), the support (4) is mounted on the support frame (1), the fixing frame (5) is mounted on the bottom of the cab tooling (9), and the support (4) is hinged to the fixing frame (5); The fixing frame (5) is hinged to the output end of the lifting cylinder (6), the lifting cylinder (6) is arranged obliquely, the end of the lifting cylinder (6) away from the output end is hinged to the supporting frame (1), and the lifting cylinder (6) is connected to the electric pump (7); The rear suspension (3) is mounted on the support frame (1), and the top of the rear suspension (3) abuts against the bottom of the cab tooling (9); The electric control system (8) comprises a control cabinet, an electronic protractor and an electronic counter. The electronic counter is arranged in the control cabinet and is used to record the number of times the cab tooling (9) is turned over. The electronic protractor is used to measure the turning angle of the cab tooling (9).

2. A cab rollover test bench according to claim 1, characterized in that: It also comprises an angle sensor, which is arranged on a hinge shaft between the support (4) and the fixing frame (5), and is connected to the control cabinet.

3. The cab rollover test bench according to claim 1, characterized in that: The support frame (1) is fixed on the ground.

4. The cab rollover test bench according to claim 1, characterized in that: The support frame (1) adopts a truss structure.

5. The cab rollover test bench according to claim 4, characterized in that: The support frame (1) comprises a longitudinal beam and a transverse beam, the number of the longitudinal beams is two, the two longitudinal beams are arranged parallel to each other, and a plurality of transverse beams are arranged between the two longitudinal beams.

6. The cab rollover test bench according to claim 1, characterized in that: It also includes a counterweight (10), which is detachably arranged on the cab tooling (9).

7. The cab rollover test bench according to claim 6, characterized in that: The counterweight (10) comprises a plurality of counterweight blocks, each of which is independent of the other.

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