Primary-secondary bracket for head and tail of fully mechanized coal mining face

Abstract

A primary-secondary support for a head and a tail of a fully mechanized coal mining face comprises a primary frame, the primary frame is an end hydraulic support, the front portion of the primary frame is connected with a scraper conveyor, a secondary frame is arranged on the rear side of the primary frame and is a unit support, and a pulling device is connected between the primary frame and the secondary frame. The left side or the right side of the rear portion of the base of the mother frame is further provided with a deviation sliding way for guiding the son frame to be pulled out forwards from the rear side of the mother frame. The pulling and moving device comprises a pulling and moving oil cylinder and a chain, one end of the pulling and moving oil cylinder is hinged to the base of the primary frame, and the other end of the pulling and moving oil cylinder is connected with the base of the secondary frame through the chain; and when the secondary frame is positioned on the rear side of the primary frame, the pulling oil cylinder is in an extending state, and the chain is in a tensioning state. The support width can be conveniently adjusted, and the support can quickly adapt to the change of the underground environment, so that the labor intensity of workers is reduced, and the operation efficiency and the safety are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal mine underground roadway supporting equipment technical field, specifically speaking, relate to a kind of for fully mechanized working face machine head tail's child-parent support. BACKGROUND

[0002] Currently, in coal mining, end hydraulic support with supporting effect is usually arranged in the roadway of both ends of working face, and the end hydraulic support mainly includes top beam, shield beam, base, front and rear connecting rod, stand column and the like, the outer side of the top beam is provided with side guard plate, the side guard plate mainly plays the role of auxiliary support and adjusting adjacent frame posture, to prevent roof fall or gangue leakage from harming the personnel below, and the stroke of the side guard plate is generally small.

[0003] In the process of working face advancing, the distance between the end hydraulic support and the side of the roadway changes greatly when the size of the roadway changes or the working face equipment goes up and down, which leads to the fact that the roof of the roadway cannot be effectively supported, causing safety hazards.

[0004] To deal with the above situation, the traditional operation method is: when the distance of one end is large, an end hydraulic support is added for roof support, and when the distance is small, the support is removed, or a single prop, anchor rod and anchor cable are used for temporary support. However, due to the narrow space of the roadway, the above operation process is time-consuming and laborious, and has low efficiency and great safety hazards.

[0005] Chinese utility model patent CN2017200811388 discloses a roadway hydraulic support with variable supporting width, which needs to be supported or lowered in height by other mechanical equipment when working, and then carried to the designated place, and the operation is relatively complex. SUMMARY

[0006] The utility model aims at the shortage of prior art, and provides a child-parent support for the tail of fully mechanized working face machine, which can conveniently adjust the supporting width, quickly adapt to the change of underground environment, thereby reducing the labor intensity of workers and greatly improving the operation efficiency and safety.

[0007] In order to achieve the above purpose, the utility model adopts the technical scheme of: a child-parent support for the tail of fully mechanized working face machine, comprising a parent support, the parent support is an end hydraulic support, the front part of the parent support is connected with a scraper conveyor, the rear side of the parent support is provided with a child support, the child support is a unit support, a pulling and moving device is connected between the parent support and the child support, and a deviation slide is further arranged on the left side or right side of the rear part of the base of the parent support to guide the child support to pull out from the rear side of the parent support.

[0008] When the child support does not need to be supported, the child support can be detachably hinged to the rear part of the base of the parent support.

[0009] When the sub-frame needs to be supported, the sub-frame is detached from the mother-frame, and the sub-frame is pulled out from the rear side of the mother-frame through the pulling device, so that the sub-frame is pulled to the left side or the right side of the mother-frame along the offset slide;

[0010] The pulling device comprises a pulling oil cylinder and a chain, one end of the pulling oil cylinder is hinged to the base of the mother-frame, and the other end of the pulling oil cylinder is connected to the base of the sub-frame through the chain; when the sub-frame is located at the rear side of the mother-frame, the pulling oil cylinder is in an extended state, and the chain is in a tensioned state.

[0011] Based on the above, the base of the sub-frame is provided with a bottom adjusting device and an anti-falling device; the bottom adjusting device is a pushing mechanism that can push the mother-frame after the sub-frame is pulled out to a position, so as to adjust the distance between the sub-frame and the mother-frame; the anti-falling device is respectively arranged on the left and right sides of the base of the sub-frame, and the anti-falling device is a folding support mechanism that can be opened to support the ground after the sub-frame is pulled out to a position, so as to prevent the sub-frame from falling.

[0012] Based on the above, the bottom adjusting device comprises an adjusting oil cylinder, and a cylinder barrel of the adjusting oil cylinder is horizontally fixedly installed in the upper part of the base of the sub-frame in the left-right direction; an extended end of a piston rod of the adjusting oil cylinder can push the mother-frame when the sub-frame is pulled out, so as to adjust the distance between the sub-frame and the mother-frame.

[0013] Based on the above, the anti-falling device comprises a support seat, one side of the support seat is hinged to the lower part of the left side or the right side of the base of the sub-frame, and a support oil cylinder is hinged between the support seat and the base of the sub-frame.

[0014] Based on the above, the offset slide is in a circular arc shape.

[0015] Compared with the prior art, the utility model has substantial features and progress, specifically, in the advancing process of the fully mechanized working face, when the size of the roadway changes or the fully mechanized working face equipment surges up and slides down, the position of the sub-frame relative to the mother-frame is adjusted through the pulling device, the supporting width of the roadway roof can be conveniently and quickly adjusted, the problem that the conventional support width size is not adjustable or the adjustment range is small and affects the roof supporting effect of the hydraulic support is avoided, the adaptability of the hydraulic support to the underground environment is improved, and the safe and efficient advancing of the working face is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structural schematic diagram of the utility model.

[0017] Figure 2 It is the top view of the utility model.

[0018] Figure 3 is the state diagram of the sub-frame being stored in the space below the rear top beam of the mother frame.

[0019] Figure 4 is the state diagram of the sub-frame being pulled out from the rear side of the mother frame for supporting the top.

[0020] In the figure: 1. mother frame; 1-1. front top beam; 1-2. rear top beam; 1-3. mother frame column; 1-4. connecting rod mechanism; 1-5. mother frame base; 1-6. balance oil cylinder; 2. sub-frame; 2-1. sub-frame top beam; 2-2. sub-frame base; 2-3. telescopic guide device; 2-4. sub-frame column; 2-5. rear gangue blocking device; 2-6. gangue blocking plate; 3. scraper conveyor; 4. offset slide; 5. pulling and moving oil cylinder; 6. chain; 7. adjusting oil cylinder; 8. support seat; 9. support oil cylinder; 10. coal mining machine. DETAILED DESCRIPTION

[0021] The technical scheme of the utility model will be described in further detail below through specific embodiments.

[0022] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , a mother and daughter support for the head end of a fully mechanized working face, comprising a mother frame 1, a sub-frame 2 and a pulling and moving device, the mother frame 1 is an end hydraulic support, the mother frame 1 mainly consists of a front top beam 1-1, a rear top beam 1-2, a mother frame column 1-3, a connecting rod mechanism 1-4, a mother frame base 1-5 and a balance oil cylinder 1-6, the front part of the mother frame 1 is connected with a scraper conveyor 3 (this is prior art), the mother frame column 1-3 is provided with four columns, two in front and two at the back, respectively supporting the front top beam 1-1 and the rear top beam 1-2 of the mother frame 1, the space below the rear top beam 1-2 of the mother frame 1 is used for storing the sub-frame 2.

[0023] The sub-frame 2 is arranged at the rear side of the mother frame 1, the sub-frame 2 is a unit support, and the sub-frame 2 mainly comprises a sub-frame top beam 2-1, a sub-frame base 2-2, a telescopic guide device 2-3, a sub-frame stand 2-4 and a rear gangue blocking device 2-5; the sub-frame base 2-2 is provided with a bottom adjusting device and an anti-falling device; the bottom adjusting device is a pushing mechanism capable of pushing the mother frame 1 after the sub-frame 2 is pulled out in place, so as to adjust the distance between the sub-frame 2 and the mother frame 1, and realize overall support of the roof by cooperating with the opening and closing of the gangue blocking plates 2-6 on both sides of the sub-frame top beam 2-1; the anti-falling device is arranged on the left and right sides of the sub-frame base 2-2 respectively, and the anti-falling device is a folding support mechanism capable of being opened and supported on the ground after the sub-frame 2 is pulled out in place, so as to prevent the sub-frame 2 from falling; the gangue blocking plates 2-6 on both sides of the sub-frame top beam 2-1 can be opened or closed through telescopic oil cylinders, and are used for assisting in roof support; the rear gangue blocking device 2-5 is hingedly installed at the rear of the sub-frame base 2-2, and is used for preventing rear gangue from flowing into the working face.

[0024] The mother frame 1 and the sub-frame 2 are connected through the pulling and moving device, and the rear left side or the rear right side of the mother frame base 1-5 is further provided with an offset slide 4 for guiding the sub-frame 2 to pull out from the rear side of the mother frame 1.

[0025] When the sub-frame 2 does not need to support the roof, the sub-frame 2 can be detachably hinged at the rear of the mother frame base 1-5, and the sub-frame 2 can be pulled and moved forward by the mother frame 1 under the shelter of the rear top beam 1-2 of the mother frame 1;

[0026] When the sub-frame 2 needs to support the roof, the sub-frame 2 and the mother frame 1 are detached, and the sub-frame 2 is pulled out from the rear side of the mother frame 1 through the pulling and moving device, so that the sub-frame 2 is pulled to the left side or the right side of the mother frame 1 along the offset slide 4.

[0027] The pulling and moving device comprises a pulling and moving oil cylinder 5 and a chain 6, one end of the pulling and moving oil cylinder 5 is hingedly connected to the mother frame base 1-5, and the other end of the pulling and moving oil cylinder 5 is connected to the sub-frame base 2-2 through the chain 6; when the sub-frame 2 is located at the rear side of the mother frame 1, the pulling and moving oil cylinder 5 is in an extended state, and the chain 6 is in a tensioned state, so that the sub-frame 2 can be pulled out through the extension and retraction of the pulling and moving oil cylinder 5.

[0028] The rear of the mother frame base 1-5 is provided with a hinge hole, and the sub-frame 2 can be hinged with the hinge hole through a pin shaft.

[0029] The offset slide 4 is in a circular arc shape, which facilitates pulling out the sub-frame 2 from the rear side of the mother frame 1.

[0030] In the embodiment, the bottom adjusting device comprises an adjusting oil cylinder 7, a cylinder barrel of the adjusting oil cylinder 7 is horizontally fixedly installed at the middle upper portion of the sub-frame base 2-2 along the left-right direction; a piston rod of the adjusting oil cylinder 7 is capable of pushing the mother frame 1 when the sub-frame 2 is pulled out, so as to adjust the distance between the sub-frame 2 and the mother frame 1.

[0031] The anti-inversion device comprises a support seat 8, one side of the support seat 8 is hingedly connected to the left or right lower portion of the sub-frame base 2-2, and a support oil cylinder 9 is hingedly connected between the support seat 8 and the sub-frame base 2-2.

[0032] The front roof beam 1-1, the rear roof beam 1-2, the mother frame stand 1-3, the connecting rod mechanism 1-4, the mother frame base 1-5, the balance oil cylinder 1-6, the sub-frame roof beam 2-1, the sub-frame base 2-2, the telescopic guide device 2-3, the sub-frame stand 2-4 and the rear gangue blocking device 2-5 are all of conventional design, and the specific structure and working principle will not be described in detail.

[0033] In use, during the advancing process of the fully-mechanized coal mining face, when the distance between the mother frame 1 (end hydraulic support) and the side of the roadway becomes larger, the pin shaft hingedly connecting the sub-frame 2 and the mother frame 1 is removed, the retracting oil cylinder 5 is controlled to retract, the retracting oil cylinder 5 can pull out the sub-frame 2 from the rear side of the mother frame 1 through the chain 6, the sub-frame 2 is pulled to the left or right side of the mother frame 1 along the offset slide 4, after the sub-frame 2 is pulled out to the position, the adjusting oil cylinder 7 is extended to push the mother frame 1, and then reversely acts on the sub-frame 2, so that the sub-frame 2 is away from the mother frame 1, the distance between the sub-frame 2 and the mother frame 1 is adjusted, the sub-frame 2 is adjusted to a reasonable position, and the opening and closing of the two gangue blocking plates 2-6 on the two sides of the sub-frame roof beam 2-1 are matched to realize the overall support of the roof.

[0034] The sub-mother support for the machine head and tail of the fully-mechanized coal mining face can quickly realize the variable-width support function, effectively reduces the labor intensity of workers, greatly improves the operation efficiency and safety, has the advantages of simple structure, simple operation of workers, strong adaptability, low cost, quick installation and removal, and few operation personnel, and is favorable for the safe and efficient production of the coal mine working face.

[0035] It should be noted that the above examples are used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones; without departing from the spirit of the technical solutions of the present application, they should be covered in the technical solution range claimed by the present application.

Claims

1. A mother-daughter support for the head and tail of a fully mechanized mining face, comprising a mother frame, wherein the mother frame is an end hydraulic support, and the front part of the mother frame is connected to a scraper conveyor, characterized in that: A sub-frame is provided on the rear side of the main frame. The sub-frame is a unit support. A pulling device is connected between the main frame and the sub-frame. An offset slide is also provided on the left or right side of the rear of the base of the main frame to guide the sub-frame to be pulled forward from the rear side of the main frame. When the sub-frame does not require support, the sub-frame can be detachably hinged to the rear of the base of the main frame; When the sub-frame needs to be supported, the sub-frame is disassembled from the main frame, and the sub-frame is pulled out from the rear of the main frame by the pulling device, so that the sub-frame is pulled to the left or right side of the main frame along the offset slide. The pulling device includes a pulling cylinder and a chain. One end of the pulling cylinder is hinged to the base of the main frame, and the other end of the pulling cylinder is connected to the base of the sub-frame via the chain. When the sub-frame is located behind the main frame, the pulling cylinder is in the extended state, and the chain is in the tensioned state.

2. The mother-daughter support for the head and tail of a fully mechanized mining face according to claim 1, characterized in that: The base of the sub-frame is equipped with a bottom adjustment device and an anti-tipping device. The bottom adjustment device can push the push mechanism of the mother frame after the sub-frame is pulled out into position to adjust the distance between the sub-frame and the mother frame. The anti-tipping device is respectively located on the left and right sides of the base of the sub-frame. The anti-tipping device can open the folding support mechanism supported on the ground after the sub-frame is pulled out into position to prevent the sub-frame from tipping over.

3. The mother-daughter support for the head and tail of a fully mechanized mining face according to claim 2, characterized in that: The bottom adjustment device includes an adjustment cylinder, the cylinder barrel of which is horizontally fixedly installed in the upper part of the base of the sub-frame in the left-right direction; the piston rod of the adjustment cylinder can push the mother frame when the sub-frame is pulled out to adjust the distance between the sub-frame and the mother frame.

4. The mother-daughter support for the head and tail of a fully mechanized mining face according to claim 2, characterized in that: The anti-tipping device includes a support base, one side of which is hinged to the lower left or right side of the base of the subframe, and a support cylinder is hinged between the support base and the base of the subframe.

5. The mother-daughter support for the head and tail of a fully mechanized mining face according to any one of claims 1-4, characterized in that: The offset slide is arc-shaped.

Images