A cab assembly and an underground haulage vehicle

Abstract

The present application relates to the field of underground transportation equipment, and discloses a cab assembly and an underground transportation vehicle, wherein the underground transportation vehicle comprises the cab assembly. The cab assembly is arranged on a vehicle body frame, and comprises: a cab arranged above the vehicle body frame and slidably connected with the vehicle body frame along the height direction of the vehicle body frame; a bottom shell connected below the vehicle body frame; a scissor lifting device penetrating through the vehicle body frame, the scissor lifting device being connected with the bottom shell and the cab and used for driving the cab to lift along the height direction of the vehicle body frame; and a distance measuring mechanism arranged on the cab and used for detecting the distance between the top end of the cab and the roof of a roadway. The height of the cab of the cab assembly can be adjusted according to the height of the roadway, so that the collision of the cab can be effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of underground transportation equipment, and in particular to a cab assembly and an underground transportation vehicle. Background Technology

[0002] In underground mines, the tunnels are generally low, and due to mine pressure, they are typically uneven and constantly changing in elevation. Currently, the cab height is fixed, and during the operation of underground transport equipment, the cab roof is prone to scraping against the tunnel roof, which directly threatens the safety of the driver.

[0003] Therefore, to avoid collisions, there is an urgent need for a height-adjustable cab assembly. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a height-adjustable cab assembly and an underground transport vehicle.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides a cab assembly for mounting on a vehicle body frame, comprising:

[0007] The driver's cab is configured to be mounted above the vehicle body frame and slidably connected to the vehicle body frame along the height direction of the vehicle body frame;

[0008] A bottom shell, used to connect to the underside of the vehicle body frame;

[0009] A scissor lift device is used to pass through the vehicle body frame. The scissor lift device is connected to both the bottom shell and the cab, and is used to drive the cab to move up and down along the height direction of the vehicle body frame.

[0010] A distance measuring mechanism is installed on the cab and is used to detect the distance between the top of the cab and the roof of the tunnel.

[0011] Optionally, the scissor lift device includes:

[0012] A first shear frame and a second shear frame are arranged in a cross configuration and hinged at the cross position. The first end and the second end of the first shear frame are respectively arranged vertically opposite to the first end and the second end of the second shear frame. The first end of the first shear frame and the first end of the second shear frame are respectively slidably connected to the cab and the bottom shell. The second end of the first shear frame and the second end of the second shear frame are respectively hinged to the bottom shell and the cab.

[0013] A linear telescopic mechanism is hinged at both ends to the bottom shell and the cab, respectively, to drive the cab to rise and fall along the height of the vehicle frame.

[0014] Optionally, the scissor lift device further includes a first roller and a second roller. A first guide groove and a second guide groove are respectively provided on the cab and the bottom shell. The first roller and the second roller are rotatably disposed at the first end of the first scissor frame and the first end of the second scissor frame, respectively. The first roller and the second roller are rotatably disposed in the first guide groove and the second guide groove, respectively.

[0015] Optionally, the linear telescopic mechanism is a hydraulic cylinder, and the piston of the hydraulic cylinder divides the interior of the hydraulic cylinder into a first cavity and a second cavity that are independent of each other.

[0016] Optionally, the scissor lift device further includes:

[0017] tank;

[0018] A switching valve is provided, and the first cavity is connected to the oil tank through the switching valve.

[0019] The system includes a hydraulic pump, a filling valve, and a first accumulator. The hydraulic pump is connected to the oil tank, and the hydraulic pump is connected to the first accumulator through the filling valve to fill the first accumulator with liquid.

[0020] A three-position four-way valve, wherein the three-position four-way valve is connected to the second cavity, the first cavity, the first accumulator and the oil tank;

[0021] When the valve core of the three-position four-way valve is in the first position, the first accumulator is connected to the second cavity, and the first cavity is connected to the oil tank.

[0022] When the valve core is in the second position, the first cavity and the second cavity are connected.

[0023] When the valve core is in the third position, the first accumulator is connected to the first cavity, and the second cavity is connected to the oil tank.

[0024] Optionally, the scissor lift device further includes a safety valve, and the first cavity is connected to the oil tank through the safety valve.

[0025] Optionally, the scissor lift device further includes a pilot valve and a pressure reducing valve. The first accumulator is connected to the pilot valve through the pressure reducing valve. The pilot valve is connected to the three-position four-way valve to control the valve core displacement of the three-position four-way valve.

[0026] Optionally, the cab assembly further includes a position detection device disposed below the cab and used to detect the position of the cab.

[0027] The present invention also provides an underground transport vehicle, including the vehicle frame and the cab assembly.

[0028] Optionally, the vehicle body frame includes:

[0029] The base plate has a through opening through which the scissor lift device passes;

[0030] The door frame is connected to the base plate. The position of the door frame is opposite to the position of the cab door. When the cab is lowered to its lowest position, the lower edge of the cab door is higher than the height of the door frame.

[0031] The back panel is connected to the floor plate and is slidably connected to the cab.

[0032] The present invention achieves the following technical effects compared to the prior art:

[0033] The cab assembly provided by this invention includes a distance measuring mechanism and a scissor lift device. During operation, the distance measuring mechanism detects the distance between the top of the cab and the roof of the tunnel. The scissor lift device raises and lowers the cab according to this distance, ensuring that the top of the cab is always lower than the roof of the tunnel. The cab assembly provided by this invention can effectively avoid the occurrence of collisions between the cab and the roof of the tunnel. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the cab assembly provided in an embodiment of the present invention;

[0036] Figure 2 This is an exploded view of the cab assembly provided in an embodiment of the present invention;

[0037] Figure 3 This is a first sectional view of the cab assembly provided in an embodiment of the present invention;

[0038] Figure 4 This is a first sectional view of the cab assembly provided in an embodiment of the present invention;

[0039] Figure 5This is a control principle diagram of the cab assembly provided in an embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of the structure of the cab assembly vehicle frame provided in an embodiment of the present invention.

[0041] Figures 1-6 Explanation of reference numerals in the attached drawings: 100, Cab assembly; 1, Body frame; 101, Door rail; 102, Floor plate; 1021, Through opening; 103, Back plate; 104, Slide rail; 2, Cab; 201, Cab door; 3, Bottom shell; 4, Linear telescopic mechanism; 5, Control element; 6, Sliding block; 7, Position detection device; 8, Distance measuring mechanism; 9, First shear frame; 10, Second shear frame; 11, First roller. 12. Second roller; 13. Second guide groove; 14. Oil tank; 15. Switch valve; 16. Hydraulic pump; 17. Filling valve; 18. First accumulator; 19. Three-position four-way valve; 20. Safety valve; 21. Pilot valve; 22. Pressure reducing valve; 23. Second accumulator; 24. Brake; 25. Two-position four-way valve; 26. Bolt; 27. First hinge seat; 28. Second hinge seat; 29. ​​Pin. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] The purpose of this invention is to provide a height-adjustable cab assembly and an underground transport vehicle.

[0044] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] refer to Figure 1-6 As shown, the cab assembly 100 provided in this embodiment of the invention is used to be mounted on the vehicle frame 1 and includes: a cab 2, a bottom shell 3, a scissor lift device and a distance measuring mechanism 8.

[0046] Specifically, the cab 2 is installed above the vehicle frame 1 and is slidably connected to the vehicle frame 1 along the height direction of the vehicle frame 1 so that the cab 2 can be raised and lowered along the height direction of the vehicle frame 1.

[0047] The bottom shell 3 is used to connect to the bottom of the vehicle body frame 1. As an optional implementation, the bottom shell 3 is connected to the bottom of the vehicle body frame 1 by bolts 26.

[0048] The scissor lift device is used to pass through the vehicle frame 1. The scissor lift device is connected to both the bottom shell 3 and the cab 2, and is used to drive the cab 2 to rise and fall along the height direction of the vehicle frame 1.

[0049] The ranging mechanism 8 is installed on the cab 2 and is used to detect the distance between the top of the cab 2 and the roof of the roadway. The ranging mechanism 8 includes, but is not limited to, a ranging radar.

[0050] During operation, the ranging mechanism 8 detects the distance between the top of the cab 2 and the tunnel roof. The scissor lift device raises and lowers the cab 2 according to this distance, ensuring that the top of the cab 2 is always lower than the tunnel roof. The cab assembly 100 provided by this invention can effectively prevent the cab 2 from colliding with the tunnel roof.

[0051] As an optional implementation, the scissor lift device includes: a first scissor frame 9, a second scissor frame 10, and a linear telescopic mechanism 4.

[0052] The first shear frame 9 and the second shear frame 10 are arranged crosswise and are hinged together at the intersection. In other embodiments, the first shear frame 9 and the second shear frame 10 are hinged together, for example, by means of a pin 29.

[0053] The first and second ends of the first shear frame 9 are respectively vertically opposite to the first and second ends of the second shear frame 10. The first ends of the first shear frame 9 and the second ends of the second shear frame 10 are slidably connected to the cab 2 and the bottom shell 3, respectively. The second ends of the first shear frame 9 and the second ends of the second shear frame 10 are respectively hinged to the bottom shell 3 and the cab 2. In some embodiments, the bottom shell 3 and the cab 2 are respectively provided with a first hinge seat 27 and a second hinge seat 28, and the second ends of the first shear frame 9 and the second ends of the second shear frame 10 are respectively hinged to the first hinge seat 27 and the second hinge seat 28.

[0054] The two ends of the linear telescopic mechanism 4 are hinged to the bottom shell 3 and the cab 2 respectively, so as to drive the cab 2 to rise and fall along the height direction of the vehicle frame 1.

[0055] Furthermore, such as Figures 2-4 As shown, the scissor lift device also includes a first roller 11 and a second roller 12. A first guide groove and a second guide groove 13 are respectively provided on the cab 2 and the bottom shell 3. The first roller 11 and the second roller 12 are rotatably disposed at the first end of the first scissor frame 9 and the first end of the second scissor frame 10, respectively. The first roller 11 and the second roller 12 are rotatably disposed in the first guide groove and the second guide groove 13, respectively.

[0056] During operation, as the linear telescopic mechanism extends and retracts, the first scissor frame 9 and the second scissor frame 10 rotate relative to each other around the hinge position. At the same time, the first roller 11 and the second roller 12 slide along the length direction of the first guide groove and the second guide groove 13, respectively. The arrangement of the first roller 11 and the second roller 12 reduces the friction between the scissor lift device and the cab 2 and the bottom shell 3.

[0057] Furthermore, in other embodiments, the linear telescopic mechanism 4 is, for example, a hydraulic cylinder, whose piston divides the interior of the cylinder into a first cavity and a second cavity, which are independent of each other.

[0058] Furthermore, such as Figure 5 As shown, the scissor lift device also includes: an oil tank 14, a switching valve 15, a hydraulic pump 16, a filling valve 17, a first accumulator 18, and a three-position four-way valve 19.

[0059] The oil tank 14 is used to hold hydraulic oil. The first cavity is connected to the oil tank 14 through a switching valve 15. The switching valve 15 is used to control the oil circuit between the first cavity and the oil tank 14. The switching valve 15 includes, but is not limited to, a solenoid valve.

[0060] Hydraulic pump 16 is connected to oil tank 14, and hydraulic pump 16 is also connected to first accumulator 18 via filling valve 17 to fill first accumulator 18 with liquid. Filling valve 17 is prior art and will not be described in detail here. During operation, hydraulic pump 16 drives hydraulic oil in oil tank 14 into filling valve 17, and then fills first accumulator 18 through filling valve 17.

[0061] The three-position four-way valve 19 is connected to the second cavity, the first cavity, the first accumulator 18 and the oil tank 14. The three-position four-way valve 19 includes, but is not limited to, a three-position four-way electro-hydraulic valve.

[0062] The three-position four-way valve 19 has three working positions: a first position, a second position, and a third position. Specifically, in this embodiment, when the valve core of the three-position four-way valve 19 is in the first position, the first accumulator 18 is connected to the second cavity, and the first cavity is connected to the oil tank 14. When the valve core is in the second position, the first cavity and the second cavity are connected. When the valve core is in the third position, the first accumulator 18 is connected to the first cavity, and the second cavity is connected to the oil tank 14.

[0063] In one specific implementation, the first cavity is the rodless cavity of the hydraulic cylinder, the second cavity is the rod cavity of the hydraulic cylinder, and the cylinder body of the hydraulic cylinder is hinged to the bottom shell 3, and the piston rod of the hydraulic cylinder is hinged to the cab 2.

[0064] Furthermore, the scissor lift device also includes a safety valve 20, and the first cavity is connected to the oil tank 14 through the safety valve 20.

[0065] Furthermore, the scissor lift device also includes a pilot valve 21 and a pressure reducing valve 22. The first accumulator 18 is connected to the pilot valve 21 via the pressure reducing valve 22. The pilot valve 21 is connected to the three-position four-way valve 19 to control the displacement of the valve core of the three-position four-way valve 19. The pilot valve 21 includes, but is not limited to, a manual pilot valve 21. When the manual pilot valve 21 is used as the pilot valve 21 in this embodiment, the driver can manually operate the pilot valve 21 to control the displacement of the valve core of the three-position four-way valve 19.

[0066] Furthermore, the cab assembly 100 also includes a control element 5, such as a controller. The distance measuring mechanism 8 is connected to the control element 5 to transmit the distance information detected between the top of the cab 2 and the roof of the roadway to the control element 5. The control element 5 is connected to the switching valve 15, the hydraulic pump 16, the filling valve 17, and the three-position four-way valve 19 to control the operation of the switching valve 15, the hydraulic pump 16, the filling valve 17, and the three-position four-way valve 19 according to the received distance information.

[0067] Of course, scissor lift devices can also take other forms, such as using a scissor lift platform as a scissor lift device.

[0068] In this embodiment, after the vehicle is started, the control element 5 controls the switching valve 15 to operate, preventing the hydraulic oil in the rodless chamber of the cylinder from entering the cylinder through the switching valve 15. Based on the feedback signal from the ranging mechanism 8, the control element 5 controls the three-position four-way valve 19 to operate, placing its valve core in either the first or third position. This allows the high-pressure oil stored in the first accumulator 18 to enter the cylinder through the three-position four-way valve 19, controlling the automatic raising and lowering of the cab 2. Specifically, when the valve core of the three-position four-way valve 19 is in the first position, the high-pressure oil stored in the first accumulator 18 enters the rod chamber of the cylinder, causing the cab 2 to descend. When the valve core of the three-position four-way valve 19 is in the third position, the high-pressure oil stored in the first accumulator 18 enters the rodless chamber of the cylinder, causing the cab 2 to rise.

[0069] Assume the real-time travel of cab 2 is Δm, and the preset safe distance between the top of cab 2 and the tunnel roof is H. When the distance between the top of cab 2 and the tunnel roof is H, the travel of cab 2 is M. After the vehicle is turned off, the valve core of the three-position four-way valve 19 returns to the second position. At this time, the rod chamber and the rodless chamber of the hydraulic cylinder are connected. The control element 5 controls the switching valve 15 to connect the rodless chamber of the hydraulic cylinder to the oil tank 14, thereby allowing the hydraulic oil in the rodless chamber of the hydraulic cylinder to flow back to the oil tank 14 through the switching valve 15. The hydraulic cylinder automatically falls back, and cab 2 falls to the lowest position. At this time, the real-time travel Δm = 0. After the vehicle is started, the ranging mechanism 8 monitors the distance between the tunnel roof and the top of cab 2 as x, and transmits the monitored distance x to the control element 5 in real time for calculation. When x > H, the control element 5 controls cab 2 to rise, and Δm increases until Δm = M; when x ≤ H, the control element 5 controls cab 2 to fall, and Δm decreases until Δm = M.

[0070] When the cab 2 is subjected to a collision impact force from the top, the control element 5 controls the safety valve 20 to open, and the pressure oil in the rodless chamber of the oil cylinder overflows back to the oil tank 14 through the safety valve 20. The oil cylinder contracts, and the height of the cab 2 is lowered to avoid damage to the cab 2 in a hard collision.

[0071] During operation, the driver sets different safety values ​​H as needed, and the control element 5 automatically adjusts the cab 2 to the preset height according to the set safety value H. It is understandable that when the preset height is reached, the distance between the top of the cab 2 and the roof of the tunnel is exactly H.

[0072] In another embodiment of the present invention, as Figure 4 and Figure 5 As shown, the cab assembly 100 also includes a position detection device 7, which is located below the cab 2 and is used to detect the position of the cab 2. The position detection device 7 is, for example, a contact switch. During operation, when the cab 2 contacts the contact switch, it indicates that the cab 2 has descended to its lowest position. At this time, the alarm sounds or the contact switch sends a signal to the control element 5, which then controls the linear telescopic mechanism to stop working, preventing the cab 2 from descending further.

[0073] It is understandable that the position detection device 7 can also be other structures, such as a proximity switch, and the specific position of the position detection device 7 depends on the actual situation.

[0074] This invention also provides an underground transport vehicle, including a vehicle frame 1 and a cab assembly 100, the underground transport vehicle being, for example, a shovel loader.

[0075] As an optional implementation method, such as Figure 6As shown, the vehicle frame 1 includes: a floor plate 102, a door rail 101, and a back plate 103.

[0076] The base plate 102 has a through opening 1021 for the scissor lift device to pass through. The door rail 101 is connected to the base plate 102, and its position is opposite to the cab door 201 of the cab 2. When the cab 2 is lowered to its lowest position, the lower edge of the cab door 201 is higher than the height of the door rail 101. The back plate 103 is connected to the base plate 102 and is slidably connected to the cab 2.

[0077] Specifically, for example, a groove 104 is provided on the back panel 103 and a slider 6 is provided on the cab 2. By sliding the slider 6 in the groove 104, a sliding connection between the back panel 103 and the cab 2 can be achieved.

[0078] Furthermore, such as Figure 5 As shown, the underground transport vehicle also includes a second accumulator 23, a two-position four-way valve 25, and a brake 24 for braking. The second accumulator 23 is connected to the brake 24 through the two-position four-way valve 25, and the two-position four-way valve 25 is connected to the oil tank 14. The valve core of the two-position four-way valve 25 has two working positions: a first position and a second position. When the valve core is in the first position, the second accumulator 23 is connected to the brake 24, injecting high-pressure oil into the brake 24. When the valve core is in the second position, the brake 24 is connected to the oil tank 14, and the high-pressure oil flows back to the oil tank 14. When the valve core is in the second position, the brake 24 brakes the underground transport vehicle, stopping its movement.

[0079] In the description of this invention, it should be noted that certain terms indicating orientation or positional relationships are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0080] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An underground transport vehicle, characterized in that, The vehicle includes a body frame and a cab assembly, the cab assembly being mounted on the body frame, and the cab assembly comprising: The driver's cab is configured to be mounted above the vehicle body frame and slidably connected to the vehicle body frame along the height direction of the vehicle body frame; A bottom shell, used to connect to the underside of the vehicle body frame; A scissor lift device is used to pass through the vehicle body frame. The scissor lift device is connected to both the bottom shell and the cab, and is used to drive the cab to move up and down along the height direction of the vehicle body frame. A distance measuring mechanism is installed on the cab and is used to detect the distance between the top of the cab and the roof of the tunnel. The scissor lift device includes: A linear telescopic mechanism, the two ends of which are respectively hinged to the bottom shell and the cab, so as to drive the cab to rise and fall along the height direction of the vehicle frame; The linear telescopic mechanism is a hydraulic cylinder, and the piston of the hydraulic cylinder divides the inside of the hydraulic cylinder into a first cavity and a second cavity that are independent of each other. tank; A switching valve is provided, and the first cavity is connected to the oil tank through the switching valve. The system includes a hydraulic pump, a filling valve, and a first accumulator. The hydraulic pump is connected to the oil tank, and the hydraulic pump is connected to the first accumulator through the filling valve to fill the first accumulator with liquid. A three-position four-way valve, wherein the three-position four-way valve is connected to the second cavity, the first cavity, the first accumulator and the oil tank; When the valve core of the three-position four-way valve is in the first position, the first accumulator is connected to the second cavity, and the first cavity is connected to the oil tank. When the valve core is in the second position, the first cavity and the second cavity are connected. When the valve core is in the third position, the first accumulator is connected to the first cavity, and the second cavity is connected to the oil tank; A safety valve is provided, and the first cavity is connected to the oil tank via the safety valve. The cab assembly also includes control elements, which are connected to the ranging mechanism, the switching valve, the hydraulic pump, the filling valve, and the three-position four-way valve. The underground transport vehicle also includes a second accumulator, a two-position four-way valve, and a brake. The second accumulator is connected to the brake via the two-position four-way valve, and the two-position four-way valve is connected to the oil tank. The valve core of the two-position four-way valve has two working positions: a first position and a second position. When the valve core is in the first position, the second accumulator is connected to the brake and injects high-pressure oil into the brake. When the valve core is in the second position, the brake applies pressure to the underground transport vehicle.

2. The underground transport vehicle according to claim 1, characterized in that, The scissor lift device also includes: A first shear frame and a second shear frame are arranged in a cross configuration and hinged at the cross position. The first end and the second end of the first shear frame are respectively arranged vertically opposite to the first end and the second end of the second shear frame. The first end of the first shear frame and the first end of the second shear frame are respectively slidably connected to the cab and the bottom shell. The second end of the first shear frame and the second end of the second shear frame are respectively hinged to the bottom shell and the cab.

3. The underground transport vehicle according to claim 2, characterized in that, The scissor lift device further includes a first roller and a second roller. A first guide groove and a second guide groove are respectively provided on the cab and the bottom shell. The first roller and the second roller are rotatably disposed at the first end of the first scissor frame and the first end of the second scissor frame, respectively. The first roller and the second roller are rotatably disposed in the first guide groove and the second guide groove, respectively.

4. The underground transport vehicle according to claim 1, characterized in that, The scissor lift device also includes a pilot valve and a pressure reducing valve. The first accumulator is connected to the pilot valve through the pressure reducing valve. The pilot valve is connected to the three-position four-way valve to control the valve core displacement of the three-position four-way valve.

5. The underground transport vehicle according to any one of claims 1-4, characterized in that, The cab assembly also includes a position detection device, which is located below the cab and is used to detect the position of the cab.

6. The underground transport vehicle according to claim 1, characterized in that, The vehicle frame includes: The base plate has a through opening through which the scissor lift device passes; The door frame is connected to the base plate. The position of the door frame is opposite to the position of the cab door. When the cab is lowered to its lowest position, the lower edge of the cab door is higher than the height of the door frame. The back panel is connected to the floor plate and is slidably connected to the cab.

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