A bottom-hugging case type scraper system

Abstract

This invention provides a box-type shovel and haulage system for underground tunnel repair. The box-type bucket includes a top plate, a bottom plate, a left side plate, and a right side plate. The connecting main frame also includes a top plate, a bottom plate, a left side plate, and a right side plate. The top plate of the box-type bucket and the top plate of the connecting main frame are rotatably connected via a rotating shaft, as are the bottom plate of the box-type bucket and the bottom plate of the connecting main frame. Left and right swing cylinders are symmetrically arranged on the left and right sides of the rotating shaft, with their ends rotatably connected to the box-type bucket and the connecting main frame, respectively. The unloading plate is located inside the box-type bucket, with its upper, lower, left, and right edges slidably connected to the top, bottom, left, and right sides of the box-type bucket, respectively. The two ends of the unloading cylinder are connected to the connecting main frame and the unloading plate, respectively. This box-type shovel and haulage system effectively solves the problems of limited space during corner construction and unloading difficulties in narrow underground coal mine tunnels.

Description

Technical Field

[0001] This invention belongs to the technical field of tunnel repair, and specifically discloses a horizontal chassis-type shovel and transport system. Background Technology

[0002] The tunnel repair machine, also known as a roadway repair machine, is a comprehensive intelligent equipment specifically designed for underground mining operations. It integrates drilling, crushing, loading, and transportation functions, and features a compact structure, high mobility, and high degree of automation.

[0003] For example, CN105714865A discloses a roadway repair machine for coal mines, which includes a vehicle body and an actuator. The vehicle body includes a traveling device and a frame mounted on top of the traveling device. The actuator includes a boom, a forearm, and a bucket. One end of the boom is mounted on the front end of the frame through a lifting mechanism. The boom is connected to the forearm, and the other end of the forearm is equipped with a bucket.

[0004] The above-mentioned patents still have the following issues that need to be addressed: 1. The bucket swings left and right by tilting its head, which makes it difficult to adjust properly when working at corners due to limited space; 2. The bucket swings up and down through the boom and arm, making it difficult to adjust its posture when unloading material in narrow underground tunnels of coal mines. Summary of the Invention

[0005] This invention provides a horizontal chassis-type shovel and transport system, which solves at least one of the technical problems in the background art.

[0006] The aforementioned underbody box-type shovel system includes a box-type bucket, a rotating shaft, a connecting main frame, a left swing cylinder, a right swing cylinder, a discharge plate, and a discharge cylinder. The box-type bucket includes a top plate, a bottom plate, a left side plate, and a right side plate, with the top and bottom plates connected via the left and right side plates. The connecting main frame also includes a top plate, a bottom plate, a left side plate, and a right side plate, with the top and bottom plates connected via the left and right side plates. The top plate of the box-type bucket and the top plate of the connecting main frame are rotatably connected via the rotating shaft, as are the bottom plate of the box-type bucket and the bottom plate of the connecting main frame. The left and right swing cylinders are symmetrically arranged on the left and right sides of the rotating shaft, with both ends of the swing cylinders rotatably connected to the box-type bucket and the connecting main frame, respectively. The discharge plate is located inside the box-type bucket, with its upper, lower, left, and right edges slidably connected to the top, bottom, left, and right sides of the box-type bucket, respectively. Both ends of the discharge cylinder are connected to the connecting main frame and the discharge plate, respectively.

[0007] In the aforementioned underbody box-type shovel system, the inner walls of the left and right side plates of the box-type bucket are respectively provided with limiting slide rails; the left and right edges of the unloading plate are respectively provided with limiting slide grooves, which slide into contact with the limiting slide rails.

[0008] In the aforementioned underbody loader box-type shovel system, the bottom plate of the box-type bucket is equipped with shovel teeth.

[0009] In the aforementioned under-mounted chassis-type shovel and conveyor system, the connecting main frame also includes a rear side plate that connects the top plate, bottom plate, left side plate, and right side plate; the front end of the unloading cylinder is connected to the middle position of the unloading plate, and the rear end is connected to the middle position of the rear side plate of the connecting main frame; the unloading plate is provided with two sets of reinforcing structures, which are symmetrically arranged on both sides of the unloading cylinder.

[0010] In the aforementioned underbody box-type shovel system, connecting lugs are provided on the left and right side plates of the box-type bucket; connecting side frames are provided on both sides of the connecting main frame; the front end of the swing cylinder is rotatably connected to the connecting lugs of the box-type bucket, and the rear end is rotatably connected to the connecting side frames.

[0011] In the aforementioned under-mounted loader-type shovel system, a connector that works with the quick-change device is provided at the rear end of the main frame.

[0012] The aforementioned underbody casing-type shovel and conveyor system also includes a hydraulic oil tank, a hydraulic pump, directional valve I, and directional valve II; the inlet of the hydraulic pump is connected to the hydraulic oil tank, and the outlet is connected to the P port of directional valve I and directional valve II respectively; the A port of directional valve I is connected to the rodless chamber of the left swing cylinder and the rod chamber of the right swing cylinder respectively, the B port is connected to the rod chamber of the left swing cylinder and the rodless chamber of the right swing cylinder respectively, and the T port is connected back to the hydraulic oil tank; the A port of directional valve II is connected to the rodless chamber of the unloading cylinder, the B port is connected to the rod chamber of the unloading cylinder, and the T port is connected back to the hydraulic oil tank.

[0013] The aforementioned underbody casing-type shovel and conveyor system also includes a balance valve I and a balance valve II; the A port and B port of the directional valve I are respectively connected to the A port and B port of the balance valve I; the A port of the balance valve I is respectively connected to the rodless chamber of the left swing cylinder and the rod chamber of the right swing cylinder, and the B port is respectively connected to the rod chamber of the left swing cylinder and the rodless chamber of the right swing cylinder; the A port and B port of the directional valve II are respectively connected to the A port and B port of the balance valve II; the A port of the balance valve II is connected to the rodless chamber of the unloading cylinder, and the B port is connected to the rod chamber of the unloading cylinder.

[0014] The aforementioned undercarriage type shovel and haulage system also includes a diversion valve; the A port and B port of the balance valve I are connected to the A port and B port of the diversion valve, respectively; the A port of the diversion valve is connected to the rodless chamber of the left swing cylinder, the A port is connected to the rod chamber of the right swing cylinder, the B port is connected to the rod chamber of the left swing cylinder, and the B port is connected to the rodless chamber of the right swing cylinder.

[0015] The aforementioned underbody casing-type shovel and conveyor system also includes a swing cylinder pilot handle, a discharge cylinder pilot handle, and a hydraulic pump drive motor; the P port of the swing cylinder pilot handle and the discharge cylinder pilot handle are connected to the outlet of the hydraulic pump, and the T port is connected back to the hydraulic oil tank; the a port of the swing cylinder pilot handle is connected to the KL port of directional valve I, and the b port is connected to the KR port of directional valve I; the a port of the discharge cylinder pilot handle is connected to the KL port of directional valve II, and the b port is connected to the KR port of directional valve II; the hydraulic pump drive motor is connected to the hydraulic pump.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The main frame is connected to the boom. The orientation of the box bucket is controlled by the left and right swing cylinders, so that the box bucket swings left and right relative to the main frame, instead of the boom, boom and box bucket swinging as a whole. This makes it easier to adjust the position when working at corners. 2. During unloading, the unloading cylinder pushes the unloading plate forward to push the material out of the box-shaped bucket, reducing the need for the machine to adjust its posture when unloading in narrow underground roadways of coal mines; 3. The above-mentioned under-ground loader-type shovel and transport system effectively solves the problem of limited space in corner construction and unloading in narrow underground roadways of coal mines. It is particularly suitable for construction in narrow underground roadways, roadway opening, roadway connection, sidewall widening, and opening of reversing ramps. It can also realize lateral construction and lateral unloading. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A 3D view of a chassis-type loader system; Figure 2 This is a front view of a jack-up loader system. Figure 3 This is a top view of a jack-up loader system. Figure 4 This is a control principle diagram of a bottom-mounted chassis-type shovel and conveyor system.

[0019] In the diagram: 1-Box-type bucket; 1.1-Limit slide rail; 1.2-Shovel teeth; 2-Rotating shaft; 3-Connecting main frame; 4-Left swing cylinder; 5-Right swing cylinder; 6-Unloading plate; 6.1-Limit slide groove; 6.2-Reinforcing structure; 7-Unloading cylinder; 8-Connecting side frame; 9-Connecting piece; 10-Hydraulic oil tank; 11-Hydraulic pump; 12-Reversing valve I; 13-Reversing valve II; 14-Balance valve I; 15-Balance valve II; 16-Diverter valve; 17-Swing cylinder pilot handle; 18-Unloading cylinder pilot handle; 19-Hydraulic pump drive motor. Detailed Implementation

[0020] 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 implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should fall within the scope of the technical content disclosed in the present invention. It should be noted that in this specification, relational terms such as "first" and "second" are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0022] This embodiment provides a horizontal underbody box-type shovel and conveyor system, including a box-type bucket 1, a rotating shaft 2, a connecting main frame 3, a left swing cylinder 4, a right swing cylinder 5, a discharge plate 6, and a discharge cylinder 7; the box-type bucket 1 includes a top plate, a bottom plate, a left side plate, and a right side plate, with the top and bottom plates connected by the left and right side plates; the connecting main frame 3 includes a top plate, a bottom plate, a left side plate, and a right side plate, with the top and bottom plates connected by the left and right side plates; the top plate of the box-type bucket 1 and the top plate of the connecting main frame 3 are rotatably connected by the rotating shaft 2. The bottom plate of the box-type bucket 1 and the bottom plate of the connecting main frame 3 are rotatably connected by the rotating shaft 2; the left swing cylinder 4 and the right swing cylinder 5 are symmetrically arranged on the left and right sides of the rotating shaft 2, and the two ends of the swing cylinder are rotatably connected to the box-type bucket 1 and the connecting main frame 3 respectively; the unloading plate 6 is located inside the box-type bucket 1, and the upper edge, lower edge, left edge and right edge of the unloading plate 6 are slidably connected to the top plate, bottom plate, left side plate and right side plate of the box-type bucket 1 respectively; the two ends of the unloading cylinder 7 are connected to the connecting main frame 3 and the unloading plate 6 respectively.

[0023] In this embodiment, the main frame 3 is connected to the boom, and the orientation of the box-shaped bucket 1 is controlled by a left-right swing cylinder, allowing the box-shaped bucket 1 to swing left and right relative to the main frame 3, rather than the boom, boom, and box-shaped bucket 1 swinging as a whole. This makes it easier to adjust the position when working at corners. During unloading, the unloading cylinder 7 pushes the unloading plate 6 forward to push the material out of the box-shaped bucket 1, reducing the need for overall machine posture adjustments when unloading in narrow underground coal mine tunnels. The above-mentioned box-shaped shovel and conveyor system effectively solves the problems of limited space during corner construction and unloading in narrow underground coal mine tunnels. It is particularly suitable for construction in narrow underground tunnels, tunnel opening, tunnel connection, side widening, and opening of reversing ramps. It can also realize lateral construction and lateral unloading.

[0024] In the above-mentioned underbody box-type shovel system, the inner walls of the left and right side plates of the box-type bucket 1 are respectively provided with limiting slide rails 1.1; the left and right edges of the unloading plate 6 are respectively provided with limiting grooves 6.1, which slide and limit slide rails 1.1 to prevent the unloading plate 6 from shifting during movement.

[0025] In the above-mentioned under-body box-type shovel system, the bottom plate of the box-type bucket 1 is equipped with shovel teeth 1.2 to scoop up materials.

[0026] In the aforementioned underbody casing-type shovel and conveyor system, the connecting main frame 3 also includes a rear side plate connecting the top plate, bottom plate, left side plate, and right side plate; the front end of the unloading cylinder 7 is connected to the middle position of the unloading plate 6, and the rear end is connected to the middle position of the rear side plate of the connecting main frame 3; the unloading plate 6 is provided with two sets of reinforcing structures 6.2, which are symmetrically arranged on both sides of the unloading cylinder 7. The unloading plate 6 is reinforced as a whole by the reinforcing structures 6.2 to ensure strength and prevent the unloading plate 6 from breaking during loading and unloading.

[0027] In the above-mentioned underbody box-type shovel system, the left and right side plates of the box-type bucket 1 are provided with connecting ears; the two sides of the connecting main frame 3 are provided with connecting side frames 8; the front end of the swing cylinder is rotatably connected to the connecting ears of the box-type bucket 1, and the rear end is rotatably connected to the connecting side frames 8.

[0028] In the aforementioned under-mounted loader-type shovel system, a connector 9 that mates with a quick-change device is provided at the rear end of the main frame 3.

[0029] The aforementioned under-mounted loader-type shovel system also includes a hydraulic oil tank 10, a hydraulic pump 11, a reversing valve I 12, and a reversing valve II 13. The inlet of the hydraulic pump 11 is connected to the hydraulic oil tank 10, and the outlet is connected to the P port of the reversing valve I 12 and the reversing valve II 13, respectively. The A port of the reversing valve I 12 is connected to the rodless chamber of the left swing cylinder 4 and the rod chamber of the right swing cylinder 5, respectively. The B port is connected to the rod chamber of the left swing cylinder 4 and the rodless chamber of the right swing cylinder 5, respectively. The T port is connected back to the hydraulic oil tank 10. The A port of the reversing valve II 13 is connected to the rodless chamber of the unloading cylinder 7, the B port is connected to the rod chamber of the unloading cylinder 7, and the T port is connected back to the hydraulic oil tank 10.

[0030] When directional valve I12 is in the right position, port P is connected to port A, and port B is connected to port T. Working oil flows from port P to port A, then to the rodless chamber of the left swing cylinder 4 and the rod chamber of the right swing cylinder 5. Working oil in the rod chamber of the left swing cylinder 4 and the rodless chamber of the right swing cylinder 5 flows back from port B to port T, achieving oil return. The piston rod of the left swing cylinder 4 extends, and the piston rod of the right swing cylinder 5 retracts, causing the box-type bucket 1 to rotate to the right. When directional valve I12 is in the left position, the box-type bucket 1 rotates to the left.

[0031] When directional valve II13 is in the right position, port P is connected to port A, and port B is connected to port T. Working oil flows from port P to port A, and then to the rodless chamber of the unloading cylinder 7. Working oil in the rod chamber of the unloading cylinder 7 flows from port B to port T, achieving oil return. The piston rod of the unloading cylinder 7 extends, pushing out the unloading plate 6. When directional valve II13 is in the left position, the unloading plate 6 retracts.

[0032] The aforementioned under-mounted loader-type shovel system also includes a balance valve I14 and a balance valve II15; the A port and B port of the directional valve I12 are connected to the A1 port and B1 port of the balance valve I14, respectively; the A2 port of the balance valve I14 is connected to the rodless chamber of the left swing cylinder 4 and the rod chamber of the right swing cylinder 5, respectively, and the B2 port is connected to the rod chamber of the left swing cylinder 4 and the rodless chamber of the right swing cylinder 5, respectively; the A port and B port of the directional valve II13 are connected to the A1 port and B1 port of the balance valve II15, respectively; the A2 port of the balance valve II15 is connected to the rodless chamber of the unloading cylinder 7, and the B2 port is connected to the rod chamber of the unloading cylinder 7.

[0033] By setting a balance valve, the hydraulic imbalance in the system is eliminated, thus stabilizing the operation of the swing cylinder and the unloading cylinder.

[0034] The aforementioned undercarriage type shovel and haulage system also includes a diversion valve 16; the A2 port and B2 port of the balance valve I 14 are respectively connected to the A1 port and B1 port of the diversion valve 16; the A2 port of the diversion valve 16 is connected to the rodless chamber of the left swing cylinder 4, the A3 port is connected to the rod chamber of the right swing cylinder 5, the B2 port is connected to the rod chamber of the left swing cylinder 4, and the B3 port is connected to the rodless chamber of the right swing cylinder 5.

[0035] The working oil entering the swing cylinder is proportionally distributed by the flow divider valve, so that the swing cylinder can extend and retract according to the set value.

[0036] The aforementioned undercarriage-mounted shovel and conveyor system also includes a swing cylinder pilot handle 17, a discharge cylinder pilot handle 18, and a hydraulic pump drive motor 19; the P port of the swing cylinder pilot handle 17 and the discharge cylinder pilot handle 18 are connected to the outlet of the hydraulic pump 11, and the T port is connected back to the hydraulic oil tank 10; the a port of the swing cylinder pilot handle 17 is connected to the KL port of the reversing valve I 12, and the b port is connected to the KR port of the reversing valve I 12; the a port of the discharge cylinder pilot handle 18 is connected to the KL port of the reversing valve II 13, and the b port is connected to the KR port of the reversing valve II 13; the hydraulic pump drive motor 19 is connected to the hydraulic pump 11 and drives the hydraulic pump 11 to work.

[0037] When the pilot handle is in the left position, the control oil reaches the KL port (i.e., the left control port) of the directional valve through port a, and the valve core moves to the right, making the directional valve work in the left position; when the pilot handle is in the right position, the control oil reaches the KR port (i.e., the right control port) of the directional valve through port b, and the valve core moves to the left, making the directional valve work in the right position.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A horizontal chassis-type shovel and conveyor system, characterized in that, It includes a box-type bucket (1), a rotating shaft (2), a connecting main frame (3), a left swing cylinder (4), a right swing cylinder (5), a discharge plate (6), and a discharge cylinder (7); The box-type bucket (1) includes a top plate, a bottom plate, a left side plate and a right side plate, and the top plate and the bottom plate are connected by the left side plate and the right side plate; The connecting main frame (3) includes a top plate, a bottom plate, a left side plate and a right side plate, and the top plate and the bottom plate are connected by the left side plate and the right side plate; The top plate of the box-shaped bucket (1) and the top plate of the connecting main frame (3) are rotatably connected by a rotating shaft (2), and the bottom plate of the box-shaped bucket (1) and the bottom plate of the connecting main frame (3) are rotatably connected by a rotating shaft (2). The left swing cylinder (4) and the right swing cylinder (5) are symmetrically arranged on the left and right sides of the rotating shaft (2), and the two ends of the swing cylinder are rotatably connected to the box bucket (1) and the connecting main frame (3), respectively. The unloading plate (6) is located inside the box-shaped bucket (1), and the upper edge, lower edge, left edge and right edge of the unloading plate (6) are slidably connected to the top plate, bottom plate, left side plate and right side plate of the box-shaped bucket (1), respectively. The two ends of the unloading cylinder (7) are connected to the main frame (3) and the unloading plate (6) respectively.

2. The under-body chassis-type shovel and conveyor system according to claim 1, characterized in that, In the box-type bucket (1), the inner walls of the left side plate and the right side plate are respectively provided with limit slide rails (1.1). The left and right edges of the unloading plate (6) are respectively provided with limit grooves. 6.1), the limiting slide groove (6.1) and the limiting slide rail (1.1) are slidably engaged.

3. The under-body chassis-type shovel and conveyor system according to claim 2, characterized in that, The bottom plate of the box-type bucket (1) is provided with shovel teeth (1.2).

4. The under-body chassis-type shovel and conveyor system according to claim 2, characterized in that, The connecting main frame (3) also includes a rear side plate that connects the top plate, bottom plate, left side plate, and right side plate; The front end of the unloading cylinder (7) is connected to the middle position of the unloading plate (6), and the rear end is connected to the middle position of the rear side plate of the connecting main frame (3). Two sets of reinforcing structures (6.2) are provided on the unloading plate (6), and the two sets of reinforcing structures (6.2) are symmetrically arranged on both sides of the unloading cylinder (7).

5. The under-body chassis type shovel and conveyor system according to claim 1, characterized in that, Connecting lugs are provided on the left and right side plates of the box-type bucket (1); Connecting side frames (8) are provided on both sides of the connecting main frame (3); The front end of the swing cylinder is rotatably connected to the connecting lug of the box-type bucket (1), and the rear end is rotatably connected to the connecting side frame (8).

6. The under-body chassis type shovel and conveyor system according to claim 1, characterized in that, The rear end of the connecting main frame (3) is provided with a connector (9) that works with the quick-change device.

7. The under-body chassis type shovel and conveyor system according to claim 1, characterized in that, It also includes a hydraulic oil tank (10), a hydraulic pump (11), a directional valve I (12), and a directional valve II (13). The inlet of the hydraulic pump (11) is connected to the hydraulic oil tank (10), and the outlet is connected to the P port of the reversing valve I (12) and the reversing valve II (13), respectively. The A port of the reversing valve I (12) is connected to the rodless chamber of the left swing cylinder (4) and the rod chamber of the right swing cylinder (5) respectively, the B port is connected to the rod chamber of the left swing cylinder (4) and the rodless chamber of the right swing cylinder (5) respectively, and the T port is connected back to the hydraulic oil tank (10). The A port of the reversing valve II (13) is connected to the rodless chamber of the unloading cylinder (7), the B port is connected to the rod chamber of the unloading cylinder (7), and the T port is connected back to the hydraulic oil tank (10).

8. The under-body chassis type shovel and conveyor system according to claim 7, characterized in that, It also includes balance valve I (14) and balance valve II (15); The A port and B port of the reversing valve I (12) are respectively connected to the A1 port and B1 port of the balancing valve I (14); The A2 port of the balance valve I (14) is connected to the rodless chamber of the left swing cylinder (4) and the rod chamber of the right swing cylinder (5) respectively, and the B2 port is connected to the rod chamber of the left swing cylinder (4) and the rodless chamber of the right swing cylinder (5) respectively. The A port and B port of the reversing valve II (13) are respectively connected to the A1 port and B1 port of the balancing valve II (15); The A2 port of the balance valve II (15) is connected to the rodless chamber of the unloading cylinder (7), and the B2 port is connected to the rod chamber of the unloading cylinder (7).

9. The under-body chassis-type shovel and conveyor system according to claim 8, characterized in that, It also includes a flow divider valve (16); The A2 port and B2 port of the balancing valve I (14) are connected to the A1 port and B1 port of the diverter valve (16) respectively; The A2 port of the diverter valve (16) is connected to the rodless chamber of the left swing cylinder (4), the A3 port is connected to the rod chamber of the right swing cylinder (5), the B2 port is connected to the rod chamber of the left swing cylinder (4), and the B3 port is connected to the rodless chamber of the right swing cylinder (5).

10. The under-body chassis-type shovel and conveyor system according to claim 9, characterized in that, It also includes a swing cylinder pilot handle (17), a discharge cylinder pilot handle (18), and a hydraulic pump drive motor (19). The P port of the swing cylinder pilot handle (17) and the unloading cylinder pilot handle (18) are connected to the outlet of the hydraulic pump (11), and the T port is connected back to the hydraulic oil tank (10). The a port of the swing cylinder pilot handle (17) is connected to the KL port of the reversing valve I (12), and the b port is connected to the KR port of the reversing valve I (12). The a port of the unloading cylinder pilot handle (18) is connected to the KL port of the reversing valve II (13), and the b port is connected to the KR port of the reversing valve II (13). The hydraulic pump drive motor (19) is connected to the hydraulic pump (11).

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