A control interlocking mechanism for controlling the walking of a dumper when unloading

Abstract

The utility model relates to short -distance self -discharging transportation technical field, proposes a kind of interlocking mechanism of control walking when hopper car unloading, including air compressor, the gas outlet of air compressor is fixedly penetrated with conveying pipe, the one end of conveying pipe away from the gas outlet of air compressor is fixedly connected with follow-up valve, the gas outlet of follow-up valve is fixedly penetrated with brake air pipe, the one end of brake air pipe away from the gas outlet of follow-up valve is fixedly connected with brake pump, the top of brake pump is provided with interlocking mechanism. In the utility model, the gas circuit and circuit connection between electromagnetic control check valve, travel switch, automatic reset normally closed switch are utilized, carriage and travel brake system are automatically interlocked, to realize the automatic control that self -discharging car carriage is in lifting state and cannot walk, through above technical scheme, solve the problem of the automatic control that self -discharging car carriage is in lifting state and cannot walk in prior art.

Description

Technical Field

[0001] This utility model relates to the field of short-distance self-unloading transportation technology, specifically to an interlocking mechanism for controlling the movement of a dump truck during unloading. Background Technology

[0002] Dump trucks are vehicles that unload goods themselves using hydraulic lifting. They are also known as tipper trucks. Dump truck beds come in two types: rear-tipping and side-tipping, with rear-tipping being more common. Because the dump truck bed can automatically tilt at a certain angle to unload, it greatly saves unloading time and labor, shortens the transportation cycle, improves production efficiency, and reduces transportation costs. It is a commonly used specialized vehicle for transporting earth, sand, gravel, and bulk materials.

[0003] However, during dump truck transportation, drivers frequently forget to lower the truck bed before driving, or operate the truck bed improperly, causing damage to roadside power lines, cables, pipes, factory roof frames, and other public facilities. The consequences range from minor power and water outages to major economic losses such as production stoppages and personal safety hazards, a truly frightening situation. Currently, some companies use alarm control devices, but due to the complex and harsh working environment of dump trucks (noise, lighting, dust, high temperatures, etc.) and driver fatigue, these devices cannot effectively prevent such incidents. Therefore, we propose an interlocking mechanism to control the movement of dump trucks during unloading. Utility Model Content

[0004] This utility model proposes an interlocking mechanism for controlling the movement of a dump truck during unloading, which solves the problem of the control device that prevents the dump truck from moving when the truck bed is in the raised state. By utilizing the dump truck's service brake (foot brake) system, the lifting of the truck bed and the service brake system are automatically interlocked, thereby realizing the automatic control of the dump truck bed when it is in the raised state.

[0005] The technical solution of this utility model is as follows:

[0006] This utility model is an interlocking mechanism for controlling the movement of a wheelbarrow during unloading. It includes an air compressor, a conveying pipe fixedly passing through the air outlet of the air compressor, a relay valve fixedly connected to the end of the conveying pipe away from the air outlet of the air compressor, a brake air pipe fixedly passing through the air outlet of the relay valve, a brake cylinder fixedly connected to the end of the brake air pipe away from the air outlet of the relay valve, and an interlocking mechanism provided on the top of the brake cylinder.

[0007] The interlocking mechanism includes a circulation pipe, one end of which is fixedly connected to the top of the brake caliper, and the other end of which is fixedly connected to one end of a relay valve. An electromagnetically controlled one-way valve is provided on the circumferential surface of the circulation pipe. A conductive wire is electrically connected to the side of the electromagnetically controlled one-way valve. Limit switch one and limit switch two are provided on the outer surface of the conductive wire. A battery is provided at the end of the conductive wire away from the electromagnetically controlled one-way valve. An exhaust port is fixedly connected to one end of the relay valve. The purpose of this mechanism is to prevent the vehicle from starting and moving when the carriage has not been lowered or when the driver operates the carriage to lift itself without standard procedures.

[0008] Optionally, the circumferential surface of the conductive wire is provided with an automatic reset normally closed switch, and the circumferential surface of the conductive wire is provided with an alarm light, the purpose of which is to enable forward movement when the unloading car is in the lifting position and the vehicle needs to be moved forward.

[0009] Optionally, the first limit switch is located one meter from the end of the front of the subframe, and the second limit switch is located one meter from the rear of the subframe, with the purpose of effectively sensing the rise and fall of the carriage.

[0010] Optionally, the initial states of limit switch one and limit switch two are both closed, and the initial state of the electromagnetically controlled one-way valve is open. The purpose is to ensure that the vehicle can move under normal driving conditions.

[0011] Optionally, a leak detection mechanism is provided on the side of the relay valve. The leak detection mechanism includes a detection box, which is fixedly inserted through the circumference of the circulation pipe. A leak chamber is opened inside the detection box, and an air storage chamber is opened inside the leak chamber. An expansion body is provided on the side of the detection box, and a mounting plate is fixedly connected to the side of the detection box. A detection light is provided on the side of the mounting plate, and a start button is provided on the side of the mounting plate. The purpose is to prevent air leakage in the brake air pipe, which would cause the interlocking mechanism to fail to function.

[0012] Optionally, a reset spring is fixedly connected to the side of the mounting plate, and the end of the reset spring away from the side of the mounting plate is fixedly connected to the circumferential surface of the start button. The purpose is to ensure that the start button can automatically reset and reduce manual intervention.

[0013] Optionally, the start button is elastically connected to the mounting plate via a reset spring. The initial state of the reset spring is a relaxed state, the purpose of which is to ensure that the reset spring allows the start button to be used again.

[0014] Optionally, the trigger end of the start button is located on the displacement trajectory of the expander, and the initial state of the expander is an unexpanded state. The purpose is to ensure that the trigger end of the start button can be squeezed during the expansion process of the expander.

[0015] The working principle and beneficial effects of this utility model are as follows:

[0016] 1. In this utility model, through the mutual cooperation of the components of the interlocking mechanism, and utilizing the air and electrical connections between the electromagnetically controlled normally closed check valve, the normally open limit switch, and the automatically reset normally closed switch, the truck body and the vehicle braking system are automatically interlocked. This achieves automatic control to prevent the dump truck body from moving when it is in the raised state, and also allows the vehicle to move forward when the unloading truck body is in the raised position. When the truck body is lowered, the two limit switches and the electromagnetically controlled check valve automatically close, allowing the vehicle to start and move normally. This design achieves the effect of interlocking the vehicle, ensuring that the dump truck body cannot move when it is in the raised state.

[0017] 2. In this utility model, through the cooperation of the components of the leak detection mechanism, when the relay valve leaks, the gas is transported through the leak chamber to the storage chamber, causing the expansion body to expand and deform. Pressing the start button triggers the detection light to flash and an alarm to remind the driver to promptly detect and repair the leak. This design improves the ability to quickly detect and handle leaks, ensuring the safety and reliability of the system. This design achieves the effect of gas detection, ensuring that the driver can promptly detect problems and avoid locking down the system. Attached Figure Description

[0018] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0019] Figure 1 This is a structural schematic diagram of the three-dimensional appearance of the present invention from a first-person perspective;

[0020] Figure 2 This is a schematic diagram of the structure of the three-dimensional outer tube from a second perspective of this utility model;

[0021] Figure 3 This is a three-dimensional enlarged structural diagram of the detection box of this utility model;

[0022] Figure 4 This is a three-dimensional magnified cross-sectional view of the detection box of this utility model.

[0023] In the diagram: 1. Air compressor; 2. Delivery pipe; 3. Relay valve; 4. Brake air pipe; 5. Brake cylinder; 6. Interlocking mechanism; 61. Circulation pipe; 62. Electromagnetic control check valve; 63. Conductive wire; 64. Limit switch one; 65. Limit switch two; 66. Battery; 67. Exhaust port; 68. Automatic reset normally closed switch; 69. Alarm light; 7. Leakage detection mechanism; 71. Inspection box; 72. Leakage chamber; 73. Air storage chamber; 74. Expansion body; 75. Mounting plate; 76. Detection light; 78. Start button; 79. Return spring. Detailed Implementation

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0025] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0026] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0028] Example 1

[0029] Reference Figures 1-4This is the first embodiment of the present invention, which proposes an interlocking mechanism for controlling the movement of a wheelbarrow during unloading. It includes an air compressor 1, a conveying pipe 2 fixedly passing through the air outlet of the air compressor 1, a relay valve 3 fixedly connected to the end of the conveying pipe 2 away from the air outlet of the air compressor 1, a brake air pipe 4 fixedly passing through the air outlet of the relay valve 3, a brake sub-pump 5 fixedly connected to the end of the brake air pipe 4 away from the air outlet of the relay valve 3, and an interlocking mechanism 6 provided on the top of the brake sub-pump 5.

[0030] The interlocking mechanism 6 includes a circulation pipe 61, one end of which is fixedly connected to the top of the brake caliper 5, and the other end of which is fixedly connected to one end of the relay valve 3. An electromagnetically controlled one-way valve 62 is provided on the circumferential surface of the circulation pipe 61. A conductive wire 63 is electrically connected to the side of the electromagnetically controlled one-way valve 62. A limit switch 64 and a limit switch 65 are provided on the outer surface of the conductive wire 63. A battery 66 is provided at the end of the conductive wire 63 away from the electromagnetically controlled one-way valve 62. An exhaust port 67 is fixedly connected to one end of the relay valve 3. The purpose of this is to prevent the vehicle from starting and moving when the car body is not lowered or when the driver operates the car body non-standardly and the car body rises on its own.

[0031] An automatic reset normally closed switch 68 is provided on the circumferential surface of the conductive wire 63, and an alarm light 69 is provided on the circumferential surface of the conductive wire 63. The purpose of this is to enable the unloading car to move forward when it is in the lifting position and the vehicle needs to be moved forward.

[0032] Limit switch 1 64 is located one meter from the end of the front of the subframe, and limit switch 2 65 is located one meter from the rear of the subframe, one meter from the axle of the carriage. The purpose of this is to effectively sense the rise and fall of the carriage.

[0033] Limit switch 64 and limit switch 65 are initially in the closed state, while electromagnetic control check valve 62 is initially in the open state. The purpose of this is to ensure that the vehicle can move under normal driving conditions.

[0034] In this embodiment, whether the dump truck driver forgets to lower the truck bed or the truck bed is raised due to non-standard operation by the driver, limit switches 64 and 65 will simultaneously and automatically ground the coil of the solenoid control check valve 62, causing it to close the circulation pipe 61. At this time, the gas generated by the air compressor 1 enters the brake air pipe 4 through the delivery pipe 2 and the relay valve 3, and then enters the brake caliper 5. Under the action of high-pressure gas, the brake caliper 5 pushes out the push rod, pushing the brake camshaft of the middle and rear axles to rotate, so that the brake shoes make strong contact with the brake drum to form effective braking. If the vehicle cannot move or stalls, the driver must lower the truck bed and disconnect the power take-off from limit switches 64 and 65 before normal operation can resume. When the unloading truck bed is in the lifting position and needs to move forward for intermittent unloading, the driver must first firmly grip the steering wheel with one hand before pressing the automatic reset normally closed switch 68 with the other hand. This disconnects the control circuit, opening the electromagnetic control check valve 62. The brake caliper 5 vents air through the exhaust port 67 of the relay valve 3, releasing the service brake and allowing the truck bed to move forward during lifting. After the driver removes their hand from the automatic reset normally closed switch 68, the service brake is activated, and the vehicle cannot move again. When the truck bed is lowered, limit switches 64 and 65 are activated, causing the electromagnetic control check valve 62 to automatically disconnect, allowing the vehicle to start and drive normally.

[0035] Example 2

[0036] Reference Figures 1-4 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: a leakage detection mechanism 7 is provided on the side of the relay valve 3. The leakage detection mechanism 7 includes a detection box 71, which is fixedly inserted through the circumferential surface of the circulation pipe 61. A leakage chamber 72 is opened inside the detection box 71, and an air storage chamber 73 is opened inside the leakage chamber 72. An expansion body 74 is provided on the side of the detection box 71. A mounting plate 75 is fixedly connected to the side of the detection box 71. A detection light 76 is provided on the side of the mounting plate 75, and a start button 78 is provided on the side of the mounting plate 75. The purpose is to prevent air leakage from the brake air pipe 4, which would prevent the interlocking mechanism 6 from functioning.

[0037] A reset spring 79 is fixedly connected to the side of the mounting plate 75. The end of the reset spring 79 away from the side of the mounting plate 75 is fixedly connected to the circumferential surface of the start button 78. The purpose is to ensure that the start button 78 can automatically reset and reduce manual intervention.

[0038] The start button 78 is elastically connected to the mounting plate 75 via a return spring 79. The initial state of the return spring 79 is a relaxed state, which is to ensure that the start button 78 can be used again.

[0039] The trigger end of the start button 78 is located on the displacement trajectory of the expansion body 74. The initial state of the expansion body 74 is unexpanded, which is to ensure that the trigger end of the start button 78 can be squeezed during the expansion process of the expansion body 74.

[0040] Compared to Embodiment 1, when the relay valve 3 leaks gas during long-term use, the leaked gas is transported through the leak chamber 72 to the gas storage chamber 73, causing the leaked gas to accumulate inside the gas storage chamber 73. The gas accumulation causes the expansion body 74 to expand and deform. During the movement of the expansion body 74, the trigger end of the start button 78 is pressed. The start button 78 is activated, causing the detection light 76 to flash and an alarm to be sounded, thereby enabling the driver to discover the gas leak and repair the problem in time.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An interlocking mechanism for controlling the movement of a wheelbarrow during unloading, characterized in that, Includes an air compressor (1), the air outlet of the air compressor (1) is fixedly connected to a conveying pipe (2), the end of the conveying pipe (2) away from the air outlet of the air compressor (1) is fixedly connected to a relay valve (3), the air outlet of the relay valve (3) is fixedly connected to a brake air pipe (4), the end of the brake air pipe (4) away from the air outlet of the relay valve (3) is fixedly connected to a brake pump (5), and the top of the brake pump (5) is provided with an interlocking mechanism (6); The interlocking mechanism (6) includes a circulation pipe (61), one end of which is fixedly connected to the top of the brake caliper (5), and the other end of which is fixedly connected to one end of the relay valve (3). An electromagnetically controlled check valve (62) is provided on the circumferential surface of the circulation pipe (61). A conductive wire (63) is electrically connected to the side of the electromagnetically controlled check valve (62). A limit switch one (64) and a limit switch two (65) are provided on the outer surface of the conductive wire (63). A battery (66) is provided at the end of the conductive wire (63) away from the electromagnetically controlled check valve (62). An exhaust port (67) is fixedly connected to one end of the relay valve (3).

2. The interlocking mechanism for controlling the movement of a wheelbarrow during unloading, as described in claim 1, is characterized in that, An automatic reset normally closed switch (68) is provided on the circumferential surface of the conductive wire (63), and an alarm light (69) is provided on the circumferential surface of the conductive wire (63).

3. The interlocking mechanism for controlling the movement of a wheelbarrow during unloading, as described in claim 2, is characterized in that... The first limit switch (64) is located one meter from the end of the front of the subframe, and the second limit switch (65) is located one meter from the rear of the subframe.

4. The interlocking mechanism for controlling the movement of a wheelbarrow during unloading, as described in claim 3, is characterized in that... The initial states of limit switch one (64) and limit switch two (65) are both closed, and the initial state of the electromagnetic control check valve (62) is open.

5. The interlocking mechanism for controlling the movement of a wheelbarrow during unloading, as described in claim 4, is characterized in that... The relay valve (3) is provided with a leak detection mechanism (7) on its side. The leak detection mechanism (7) includes a test box (71). The test box (71) is fixedly inserted through the circumferential surface of the circulation pipe (61). The test box (71) has a leak chamber (72) inside. The leak chamber (72) has a gas storage chamber (73) inside. The test box (71) has an expansion body (74) on its side. The test box (71) has a mounting plate (75) fixedly connected to its side. The mounting plate (75) has a detection light (76) on its side. The mounting plate (75) has a start button (78) on its side.

6. The interlocking mechanism for controlling the movement of a wheelbarrow during unloading, as described in claim 5, is characterized in that... A reset spring (79) is fixedly connected to the side of the mounting plate (75), and one end of the reset spring (79) away from the side of the mounting plate (75) is fixedly connected to the circumferential surface of the start button (78).

7. The interlocking mechanism for controlling the movement of a wheelbarrow during unloading, as described in claim 6, is characterized in that... The start button (78) is elastically connected to the mounting plate (75) via a reset spring (79), and the initial state of the reset spring (79) is a relaxed state.

8. The interlocking mechanism for controlling the movement of a wheelbarrow during unloading, as described in claim 7, is characterized in that... The trigger end of the start button (78) is located on the displacement trajectory of the expansion body (74), and the initial state of the expansion body (74) is the unexpanded state.

Images