Anti-deviation sinking auxiliary bottom lifting device

Abstract

The utility model provides an anti -deflection sinking auxiliary lifting bottom device, including the length direction of setting a plurality of lifting bottom mechanism along the pad frame, the lifting bottom mechanism includes fixed base, support base and linear drive mechanism, the fixed base with pad frame is fixed, support base sets up in fixed base far away pad frame one side, support base with fixed base between articulates linear drive mechanism, the bottom of support base is provided with support bent plate, support bent plate includes the first support surface and second support surface with a certain angle of being linked, first support board face is plane and is close to fixed base, the position of support base is located first support surface above, and is located between linear drive mechanism below and fixed base rotary joint, linear drive mechanism telescopic drive ground surface of support bent plate is converted between first support surface and second support surface.

Description

Technical Field

[0001] This utility model belongs to the field of coal mining, specifically relating to an anti-sinking auxiliary lifting device. Background Technology

[0002] In fully mechanized coal mining faces, scraper conveyors are the primary coal transportation equipment, and their operational stability directly impacts mining efficiency and safety. Due to the uneven weight distribution of the power unit at the head and tail of the scraper conveyor, the non-power unit side tends to tilt upwards, allowing loose coal to accumulate below the bottom plate of the scraper head. This prevents the scraper conveyor from effectively shoveling coal during its movement, hindering the removal of loose coal and thus affecting mining efficiency and the normal operation of the equipment.

[0003] With the continuous increase in the power of coal mining equipment, the weight and operating load of the equipment are also increasing, placing higher demands on anti-slack devices. Especially in special working conditions such as thin coal seam mining, where equipment installation space is limited, a compact and flexible bottom-lifting device is even more necessary. In existing technologies, the problem of slack in the drive unit of scraper conveyors is usually addressed using fixed mechanical supports or linear lifting mechanisms, which have the following shortcomings: Fixed mechanical supports: lack active bottom-lifting function, cannot dynamically adjust the height of the head and tail of the machine, and are difficult to effectively counteract the risk of slippage caused by slack in the high-power drive unit. Linear lifting mechanisms: These bottom-lifting devices, such as hydraulic cylinders and cylinder covers, occupy a large space and are quite tall, making them difficult to adapt to working conditions with limited space, such as the structure of an anti-slack bottom-lifting device described in patent CN220431258U. Summary of the Invention

[0004] This utility model provides an anti-sinking auxiliary lifting device.

[0005] The purpose of this utility model is achieved in the following manner: an anti-slack auxiliary lifting device includes a plurality of lifting mechanisms arranged along the length of a pad frame located below the head or tail of a scraper conveyor and extending below the power unit; the lifting mechanism is located on the side of the pad frame located at the power unit; the lifting mechanism includes a fixed seat, a support seat, and a linear drive mechanism; the fixed seat is fixed to the pad frame, and the support seat is located on the side of the fixed seat away from the pad frame; the linear drive mechanism is hinged between the support seat and the fixed seat; a support bend plate is provided at the bottom of the support seat, and the support bend plate includes a first support surface and a second support surface connected at a certain angle; the first support plate surface is flat and close to the fixed seat, and the second support surface is away from the support seat; the support seat is rotatably connected to the fixed seat at a position between the first support surface and the linear drive mechanism; the linear drive mechanism extends and retracts to cause the contact surface of the support bend plate to switch between the first support surface and the second support surface.

[0006] A mounting bracket is fixedly installed on the surface of the supporting curved plate; the linear drive mechanism is hinged between the upper end of the mounting bracket and the upper end of the fixed seat; the rotation centers of the mounting bracket and the fixed seat, and the rotation center of the mounting bracket and the linear drive mechanism are arranged in parallel; the rotation centers of the mounting bracket and the fixed seat are located above the first support surface.

[0007] In the shortened state of the linear drive mechanism, the base plate of the fixed seat is spaced a certain distance from the supporting curved plate; a connecting member extending towards the supporting seat is fixedly installed on the fixed seat, and the connecting member and the mounting bracket are rotatably connected by a rotating shaft; the rotating shaft is located on the side above the first supporting surface near the fixed seat; the axis of the rotating shaft is the rotation center of the mounting bracket and the fixed seat.

[0008] The supporting plate is a bent part, and the second supporting surface is a plane; the angle between the first supporting surface and the second supporting surface is between 150 degrees and 160 degrees; the width of the first supporting surface is greater than the width of the second supporting surface.

[0009] A sliding beam is fixedly installed at one end of the pad frame near the fixed seat; the fixed seat is detachably connected to the sliding beam; and sliding ears are provided on the sliding beam.

[0010] The fixed base is provided with an opening groove for accommodating the pushing beam on the side near the pushing beam; the fixed base is provided with a connecting plate for connecting the linear drive mechanism; the fixed base is fixedly provided with a connecting member for connecting the support base, and the linear drive mechanism is a hydraulic cylinder.

[0011] Compared with the prior art, the bottom lifting mechanism of this utility model is set on the side close to the hydraulic support, which can realize active bottom lifting. The linear drive mechanism is not placed vertically, has a low height, occupies less space, and can be applied in working conditions with limited space. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the power unit and hydraulic support at the head or tail of the engine.

[0013] Figure 2 This is a schematic diagram of the working process of the bottom lifting device of this utility model installed at the head or tail of the machine.

[0014] Figure 3 yes Figure 2 Side view.

[0015] Figure 4 This is a schematic diagram of the bottom-lifting mechanism.

[0016] Figure 5 This is a schematic diagram of the fixed base.

[0017] Figure 6 This is a schematic diagram of the support base.

[0018] Figure 7 This is a schematic diagram of the lifting mechanism in its raised state.

[0019] Figure 8 yes Figure 7 A magnified view of a portion of the image.

[0020] Figure 9 yes Figure 8 A diagram showing the movement behind the ear.

[0021] Among them, 1 is the power unit, 2 is the pad frame, 3 is the pushing beam, 30 is the pushing ear, 4 is the fixed seat, 40 is the connector, 41 is the opening slot, 42 is the connecting plate, 5 is the support seat, 50 is the support bending plate, 501 is the first support surface, 502 is the second support surface, 51 is the mounting bracket, 52 is the rotating shaft, 6 is the linear drive mechanism, 7 is the hydraulic support, and 8 is the bottom lifting mechanism. Detailed Implementation

[0022] In this utility model, unless otherwise expressly specified and limited, the technical terms used in this application shall have the ordinary meaning understood by those skilled in the art. Terms such as "connected," "linked," "fixed," and "set" shall be interpreted broadly, referring to fixed connections, detachable connections, or integral connections; direct connections or indirect connections via an intermediate medium; mechanical connections or electrical connections. Unless otherwise expressly specified and limited, "above" or "below" a second feature may mean that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," or "over" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "under" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. Relational terms such as "first," "second," etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms used in the description, such as “center,” “lateral,” “longitudinal,” “length,” “width,” “thickness,” “height,” “front,” “rear,” “left,” “right,” “up,” “down,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “axial,” “radial,” “circumferential,” “clockwise,” and “counterclockwise,” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation.

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Figure 1-9As shown, an anti-slack auxiliary lifting device includes a plurality of lifting mechanisms 8 arranged along the length of a pad frame 2 located below the head or tail of a scraper conveyor and extending below the power unit 1; the lifting mechanism 8 is located on the side of the pad frame 2 located in the power unit 1; the lifting mechanism 8 includes a fixed base 4, a support base 5, and a linear drive mechanism 6; the fixed base 4 is fixed to the pad frame 2, and the support base 5 is located on the side of the fixed base 4 away from the pad frame 2; the linear drive mechanism 6 is hinged between the support base 5 and the fixed base 4; the support base 5... A support plate 50 is provided at the bottom of the support base 5. The support plate 50 includes a first support surface 501 and a second support surface 502 connected at a certain angle. The first support plate surface is flat and close to the fixed base 4, while the second support surface 502 is away from the support base 5. The support base 5 is rotatably connected to the fixed base 4 at a position between the first support surface 501 and the linear drive mechanism 6. The linear drive mechanism 6 extends and retracts, causing the contact surface of the support plate 50 to switch between the first support surface 501 and the second support surface 502. A pad frame 2 is provided below the head or tail of the scraper conveyor. The upper surface of the pad frame 2 contacts the head or tail and bears the weight of the head or tail, but the power unit 1 is generally suspended. A push lug 30 is generally provided on the side of the pad frame 2 extending below the power unit 1. The cylinder of the hydraulic support 7 is connected to the push lug 30 to push the head or tail to move. Here, the length direction of the pad frame 2 is the conveying direction of the scraper conveyor, that is, the front-to-back direction. The first support surface 501 and the second support surface 502 can both be planes with a certain angle. Alternatively, the first support surface 501 can be a plane or a largely plane, and the second support surface 502 can be a part of the outer circumference of a cylinder, smoothly transitioning to the first support surface 501; or other smoothly transitioning curved surfaces, as long as the lifting effect is achieved. When the linear drive mechanism 6 is in the shortened state, it does not apply force to the pad, the first support surface 501 of the support base 5 is on the ground, and the lifting mechanism 8 is not working. When the linear drive mechanism 6 is extended, the second support surface 502 gradually begins to touch the ground. During this process, the connection between the first support surface 501 and the second support surface 502 contacts the ground, and the first support surface 501 swings upward, causing the connection between the fixed base 4 and the support base 5 to rise, thereby raising the fixed base 4 and the pad 2 on the side connected to the fixed base 4, achieving the anti-sinking function. During this process, the support base 5 is also pulled towards the fixed base 4 and moved a certain position. After the second support surface 502 is grounded, the position of the support base 5 is stable, and the pad frame 2 is in a stable raised state.The bottom-lifting mechanism 8 of this utility model is located on the side close to the hydraulic support 7, which can realize active bottom lifting. The linear drive mechanism 6 is not placed vertically, has a low height, occupies less space, and can be applied in working conditions with limited space.

[0024] Furthermore, a mounting bracket 51 is fixedly mounted on the surface of the supporting curved plate 50; the upper end of the mounting bracket 51 is hinged to the upper end of the fixed base 4 via the linear drive mechanism 6; the rotation centers of the mounting bracket 51 and the fixed base 4, and the rotation centers of the mounting bracket 51 and the linear drive mechanism 6 are arranged in parallel; the rotation centers of the mounting bracket 51 and the fixed base 4 are located above the first support surface 501. The shape of the mounting bracket 51 can be two parallel triangular vertical plates, with most of the lower end located on the first support surface 501 and a portion located on the second support surface 502; reinforcing ribs can be provided on both sides.

[0025] Specifically, in the shortened state of the linear drive mechanism 6, the base plate of the fixed seat 4 is spaced a certain distance from the supporting curved plate 50; a connector 40 extending towards the supporting seat 5 is fixedly mounted on the fixed seat 4, and the connector 40 and the mounting bracket 51 are rotatably connected via a rotating shaft 52; the rotating shaft 52 is located above the first supporting surface 501 on the side near the fixed seat 4; the axis of the rotating shaft 52 is the rotation center of the mounting bracket 51 and the fixed seat 4. The end of the connector 40 can be inserted between the two triangular vertical plates, and the three are rotatably connected by a pin. Limiters can be provided at both ends of the pin to prevent it from dislodging.

[0026] Preferably, the supporting bent plate 50 is a bent part, and the second supporting surface 502 is a plane; the angle between the first supporting surface 501 and the second supporting surface 502 is between 150 degrees and 160 degrees; the width of the first supporting surface 501 is greater than the width of the second supporting surface 502. This angle is determined according to actual needs. The supporting bent plate 50 can also be formed by other processing methods. The first supporting surface 501 and the second supporting surface 502 can have a smooth transition.

[0027] Specifically, a pushing beam 3 is fixedly mounted on one end of the pad frame 2 near the fixed base 4; the fixed base 4 is detachably connected to the pushing beam 3; and a pushing lug 30 is provided on the pushing beam 3. The pad frame 2 and the pushing beam 3 are existing structures, and the pushing lug 30 is used to connect the hydraulic support 7, thereby pushing the machine head or tail to move; this part is also an existing structure.

[0028] Furthermore, the fixed base 4 is provided with an opening slot 41 for accommodating the pushing beam 3 on the side near the pushing beam 3; a connecting plate 42 for connecting the linear drive mechanism 6 is provided on the fixed base 4; a connecting member 40 for connecting the support base 5 is fixedly provided on the fixed base 4, and the linear drive mechanism 6 is a hydraulic cylinder. The opening slot 41 extends through the fixed base 4 in the front-rear direction, and the opening direction is set towards the pushing beam 3. The connecting member 40 extends towards the support base 5.

[0029] In practical implementation: When it is necessary to prevent the pad frame 2 of the power unit 1 at the head or tail of the machine from slipping, the linear drive mechanism 6, i.e., the hydraulic cylinder, starts to extend, and the support seat 5 swings from the first support surface 501 to the second support surface 502. During this process, the rotating shaft 52 rises, driving the fixed seat 4 and one side of the pad frame 2 to rise, thereby achieving the effect of preventing the power unit 1 at the head or tail from slipping. The active auxiliary lifting function of this utility model can effectively prevent the head and tail of the machine from slipping. Moreover, the lifting mechanism 8 is easy to install, and its position and number can be flexibly adjusted. The structure is simple and compact, occupies little space, and can be applied in working conditions with limited installation space.

[0030] The technical features of the embodiments described above can be combined in any way, and as long as there is no contradiction in the combination of these technical features, they should all be considered within the scope of this specification. Without departing from the overall concept of this utility model, any equivalent substitutions or modifications made to the technical solution of this utility model, as well as any changes and improvements, should also be considered within the protection scope of this utility model.

Claims

1. A bottom-lifting device for preventing uneven sinking, characterized in that: The system includes several lifting mechanisms arranged along the length of a pad frame located below the head or tail of the scraper conveyor and extending below the power unit. Each lifting mechanism is positioned on the side of the pad frame located near the power unit. Each lifting mechanism includes a fixed base, a support base, and a linear drive mechanism. The fixed base is fixed to the pad frame, and the support base is located on the side of the fixed base away from the pad frame. The linear drive mechanism is hinged between the support base and the fixed base. A support bend is provided at the bottom of the support base, and the support bend includes a first support surface and a second support surface connected at a certain angle. The first support surface is planar and close to the fixed base, while the second support surface is away from the support base. The support base is rotatably connected to the fixed base at a position between the first support surface and the linear drive mechanism. The linear drive mechanism extends and retracts, causing the contact surface of the support bend to switch between the first and second support surfaces.

2. The anti-sinking auxiliary lifting device according to claim 1, characterized in that: A mounting bracket is fixedly installed on the surface of the supporting curved plate; the linear drive mechanism is hinged between the upper end of the mounting bracket and the upper end of the fixed seat; the rotation centers of the mounting bracket and the fixed seat, and the rotation center of the mounting bracket and the linear drive mechanism are arranged in parallel; the rotation centers of the mounting bracket and the fixed seat are located above the first support surface.

3. The anti-sinking auxiliary lifting device according to claim 2, characterized in that: In the shortened state of the linear drive mechanism, the base plate of the fixed seat is spaced a certain distance from the supporting curved plate; a connecting member extending towards the supporting seat is fixedly installed on the fixed seat, and the connecting member and the mounting bracket are rotatably connected by a rotating shaft; the rotating shaft is located on the side above the first supporting surface near the fixed seat; the axis of the rotating shaft is the rotation center of the mounting bracket and the fixed seat.

4. The anti-sinking auxiliary lifting device according to claim 1, characterized in that: The supporting plate is a bent part, and the second supporting surface is a plane; the angle between the first supporting surface and the second supporting surface is between 150 degrees and 160 degrees; the width of the first supporting surface is greater than the width of the second supporting surface.

5. The anti-sinking auxiliary lifting device according to any one of claims 1-4, characterized in that: A sliding beam is fixedly installed at one end of the pad frame near the fixed base; the fixed base is detachably connected to the sliding beam; and sliding ears are provided on the sliding beam.

6. The anti-sinking auxiliary lifting device according to claim 5, characterized in that: The fixed base is provided with an opening groove for accommodating the pushing beam on the side near the pushing beam; the fixed base is provided with a connecting plate for connecting the linear drive mechanism; the fixed base is fixedly provided with a connecting member for connecting the support base, and the linear drive mechanism is a hydraulic cylinder.

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