CN220955652U - Support protection device - Google Patents

Abstract

The utility model provides a support guard comprising: a mounting base; the first support structure is positioned above the mounting seat and comprises a support top, and a first support foot part and a second support foot part which are arranged on two sides of the support top; the first buffer structure comprises a first magnetic piece and a second magnetic piece, the first magnetic piece is arranged on the mounting seat, the second magnetic piece is arranged on the first supporting foot, and the first magnetic piece and the second magnetic piece are in repulsive fit; and the guide structure is arranged between the mounting seat and the first supporting foot part. The technical scheme of the utility model effectively solves the technical problem of poor protection effect of the supporting and protecting device in the related technology.

Description

Support protection device

Technical Field

The utility model relates to the technical field of protection devices, in particular to a supporting protection device.

Background

Coal in China is mainly underground mining, a roadway is required to be excavated underground, and the roadway is a drilled passage between the ground surface and an ore body and is used for carrying ores, ventilating, draining water, pedestrians and the like. Sudden damage occurs in the surrounding rock in the sky, known as rock burst. Rock burst is a large risk factor in the coal exploitation process, so that the loss of enterprise production is caused, and the life safety of staff is seriously threatened. So that the inner cavity of the roadway needs to be provided with a protective device in order to avoid the occurrence of danger.

The traditional rock burst protector usually selects a U-shaped steel frame to support a roadway, the U-shaped steel frame is suitable for the roadway with long service time and unstable surrounding rock, but when the generated impact is large, the surface of the traditional U-shaped frame is not provided with a device for absorbing the impact, and when the large rock burst occurs, the U-shaped frame is easily damaged, so that the damage is caused to staff, and the safety of the staff and equipment cannot be effectively guaranteed.

Disclosure of utility model

The utility model mainly aims to provide a supporting and protecting device which is used for solving the problem that the supporting and protecting device in the related art is poor in protecting effect.

In order to achieve the above object, the present utility model provides a support guard comprising: a mounting base; the first support structure is positioned above the mounting seat and comprises a support top, and a first support foot part and a second support foot part which are arranged on two sides of the support top; the first buffer structure comprises a first magnetic piece and a second magnetic piece, the first magnetic piece is arranged on the mounting seat, the second magnetic piece is arranged on the first supporting foot, and the first magnetic piece and the second magnetic piece are in repulsive fit; and the guide structure is arranged between the mounting seat and the first supporting foot part.

Further, the guide structure comprises a guide cylinder and a guide plate which are in nested fit, the guide cylinder is arranged on the mounting seat, the guide plate is arranged on the first supporting foot part, the first magnetic part is arranged in the guide cylinder, and the second magnetic part is arranged in the guide plate.

Further, the supporting protection device further comprises a transmission structure, a bearing seat and a reset piece, wherein the bearing seat is movably arranged in the guide cylinder in the guiding direction of the guide structure, the guide plate drives the bearing seat to move towards the second magnetic piece through the transmission structure, the reset piece is positioned between the guide cylinder and the bearing seat and applies a reset force far away from the second magnetic piece to the bearing seat, and the first magnetic piece is arranged in the bearing seat.

Further, the bearing seat comprises a bottom plate and a coaming connected with the bottom plate, and the first magnetic piece is arranged on the bottom plate and located in the coaming.

Further, the transmission structure comprises a gear, a first rack and a second rack, wherein the first rack is arranged on one side, facing the coaming, of the guide plate, the second rack is arranged on one side, facing the guide plate, of the coaming, the gear is fixed in the guide cylinder and located between the first rack and the second rack, and the gear is meshed with the first rack and the second rack.

Further, the reset piece is a tension spring.

Further, the support protection device further comprises a second support structure covering the outer side of the first support structure, the second support structure comprises an arch top, a first vertical frame and a second vertical frame, the first vertical frame and the second vertical frame are connected with two sides of the arch top, a space is reserved between the support top and the arch top, the support protection device further comprises an elastic support piece, and the elastic support piece is arranged between the support top and the arch top.

Further, the junction of arch top and first grudging post is provided with the through-hole, supports protector and still includes balancing weight and connecting rope, and connecting rope passes the through-hole, and connecting rope's first end is connected with a bearing structure, and connecting rope's second end is connected with the balancing weight.

Further, the supporting protection device further comprises a limiting structure, the limiting structure comprises a limiting groove and a limiting block, one of the limiting groove and the limiting block is arranged on one side, facing the balancing weight, of the first vertical frame, and the other one of the limiting groove and the limiting block is arranged on one side, facing the first vertical frame, of the balancing weight.

Further, the mounting seat is arranged on one side of the first stand towards the second stand.

By applying the technical scheme of the utility model, the first supporting structure is arranged above the mounting seat and comprises a supporting top, a first supporting foot part and a second supporting foot part, and the first supporting foot part and the second supporting foot part are arranged on two sides of the supporting top. The first buffer structure comprises a first magnetic part and a second magnetic part, the first magnetic part is arranged on the mounting seat, the second magnetic part is arranged on the first supporting foot, and the first magnetic part and the second magnetic part are in repulsive fit. A guide structure is provided between the mounting base and the first support foot. Through foretell setting, the mount pad can play the supporting role to first bearing structure. The first supporting foot and the second supporting foot are arranged, so that when the first supporting structure is impacted, the first supporting structure is stressed more reasonably, damage to the first supporting structure due to larger impact force is avoided, and the first supporting structure can effectively play a supporting role. When the first supporting structure receives impact, the first supporting structure moves towards the direction close to the mounting seat, namely, the first magnetic part arranged on the mounting seat and the second magnetic part arranged on the first supporting foot are close to each other, meanwhile, as the first magnetic part and the second magnetic part are in repulsive fit, namely, when the first magnetic part and the second magnetic part are close to each other, the repulsive force is increased, the first magnetic part receives the force moving towards the direction away from the mounting seat, the impact force transmitted by the first supporting structure counteracts, the first supporting structure is prevented from being damaged after receiving the larger impact force, and the supporting protection device can play a protection role. The setting of guide structure for when first supporting foot moved to the direction that is close to the mount pad, can play the guide effect to first supporting structure, avoid first supporting structure to produce the skew, influence the protection effect who supports protector. Therefore, the technical scheme of the utility model effectively solves the technical problem of poor protection effect of the supporting and protecting device in the related technology.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

Fig. 1 shows a schematic cross-sectional view of an embodiment of a support guard according to the utility model;

Fig. 2 shows a schematic partial sectional view of the first buffer structure, guide structure, transmission structure, carrier seat and restoring element of the support guard of fig. 1.

Wherein the above figures include the following reference numerals:

10. A mounting base; 20. a first support structure; 21. a support top; 22. a first support foot; 23. a second support foot; 30. a first buffer structure; 31. a first magnetic member; 32. a second magnetic member; 40. a guide structure; 41. a guide cylinder; 42. a guide plate; 50. a transmission structure; 51. a gear; 52. a first rack; 53. a second rack; 60. a bearing seat; 61. a bottom plate; 62. coaming plate; 70. a reset member; 71. a tension spring; 80. a second support structure; 81. an arched roof; 82. a first stand; 83. a second stand; 90. an elastic support; 100. a through hole; 110. balancing weight; 120. a connecting rope; 130. a limit structure; 131. a limit groove; 132. and a limiting block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

As shown in fig. 1 and 2, in the present embodiment, the support guard includes: mount 10, first support structure 20, first buffer structure 30, guide structure 40. The first support structure 20 is located above the mounting base 10, and the first support structure 20 includes a support top 21, and a first support foot 22 and a second support foot 23 disposed on both sides of the support top 21. The first buffer structure 30 includes a first magnetic member 31 and a second magnetic member 32, where the first magnetic member 31 is disposed on the mounting base 10, the second magnetic member 32 is disposed on the first supporting leg 22, and the first magnetic member 31 and the second magnetic member 32 are in repulsive fit. The guide structure 40 is disposed between the mount 10 and the first support foot 22.

By applying the technical scheme of the utility model, the first supporting structure 20 is arranged above the mounting seat 10, the first supporting structure 20 comprises a supporting top 21, a first supporting foot 22 and a second supporting foot 23, and the first supporting foot 22 and the second supporting foot 23 are arranged on two sides of the supporting top 21. The first buffer structure 30 includes a first magnetic member 31 and a second magnetic member 32, where the first magnetic member 31 is disposed on the mounting base 10, the second magnetic member 32 is disposed on the first supporting leg 22, and the first magnetic member 31 and the second magnetic member 32 are in repulsive fit. A guide structure 40 is provided between the mount 10 and the first support foot 22. Through the above arrangement, the mount 10 can support the first support structure 20. The first support foot 22 and the second support foot 23 are arranged, so that when the first support structure 20 is impacted, the first support structure 20 is stressed more reasonably, and damage to the first support structure 20 due to larger impact force is avoided, namely, the first support structure 20 can effectively play a supporting role. When the first supporting structure 20 is impacted, the first supporting structure 20 moves towards the direction close to the mounting seat 10, namely, the first magnetic piece 31 arranged on the mounting seat 10 and the second magnetic piece 32 arranged on the first supporting foot 22 are close to each other, meanwhile, as the first magnetic piece 31 and the second magnetic piece 32 are in repulsive fit, namely, when the first magnetic piece 31 and the second magnetic piece 32 are close to each other, repulsive force is increased, so that the second magnetic piece 32 receives force moving towards the direction far away from the mounting seat 10, and the impact force transmitted by the first supporting structure 20 is counteracted, the first supporting structure 20 is prevented from being damaged after being subjected to larger impact force, and the supporting and protecting device can play a role in protecting. The guiding structure 40 is arranged, so that when the first supporting foot 22 moves towards the direction close to the mounting seat, the guiding effect can be achieved on the first supporting structure 20, and the first supporting structure 20 is prevented from generating offset to influence the protection effect of the supporting protection device. Therefore, the technical scheme of the utility model effectively solves the technical problem of poor protection effect of the supporting and protecting device in the related technology.

The magnetic pole of the first magnetic member 31 facing the second magnetic member 32 is the same as the magnetic pole of the second magnetic member 32 facing the first magnetic member 31.

As shown in fig. 2, in the present embodiment, the guide structure 40 includes a guide cylinder 41 and a guide plate 42 that are nested, the guide cylinder 41 is disposed on the mount 10, the guide plate 42 is disposed on the first support leg 22, the first magnetic member 31 is disposed in the guide cylinder 41, and the second magnetic member 32 is disposed in the guide plate 42. By the above arrangement, after the first supporting structure 20 receives a large impact, the first magnetic member 31 and the second magnetic member 32 approach each other, and the first buffer structure 30 can more effectively play a role in buffering under the mutual cooperation of the guide cylinder 41 and the guide plate 42. The first magnetic part 31 is arranged in the guide cylinder, the second magnetic part 32 is arranged in the guide plate, so that when the first magnetic part 31 and the second magnetic part 32 are close to each other, the position of the first magnetic part 31 is more stable, the stress of the first magnetic part 31 and the stress of the second magnetic part 32 are more uniform, and further the support protection device can have a better protection effect.

Specifically, after the first support structure 20 is impacted, the second magnetic member 32 moves toward the direction approaching the first magnetic member 31, and the second magnetic member 32 can enter the guide cylinder 41.

As shown in fig. 2, in the present embodiment, the support and protection device further includes a transmission structure 50, a bearing seat 60 and a restoring member 70, the bearing seat 60 is movably disposed in the guide cylinder 41 in the guiding direction of the guide structure 40, the guide plate 42 drives the bearing seat 60 to move toward the second magnetic member 32 through the transmission structure 50, the restoring member 70 is disposed between the guide cylinder 41 and the bearing seat 60 and applies a restoring force to the bearing seat 60 away from the second magnetic member 32, and the first magnetic member 31 is disposed in the bearing seat 60. When the first supporting structure 20 is impacted, the guide plate 42 and the guide cylinder 41 approach each other in the direction from the first supporting structure 20 to the mounting seat 10, the guide plate 42 converts the impact force transmitted by the first supporting structure 20 into a driving force for enabling the bearing seat 60 to move towards the second magnetic piece 32 through the transmission structure 50, and further enables the first magnetic piece 31 arranged in the bearing seat 60 to move towards the direction approaching the second magnetic piece 32, so that the repulsive force between the first magnetic piece 31 and the second magnetic piece 32 is gradually increased, namely, the impact force transmitted by the first supporting structure 20 is gradually counteracted, until the first magnetic piece 31 and the second magnetic piece 32 are not mutually approached any more, and the supporting protection device plays a role in protection. The reset element 70 enables the bearing seat 60 to move towards the direction far away from the second magnetic element 32, so that the first magnetic element 31 can move towards the direction far away from the second magnetic element 32, meanwhile, the bearing seat 60 moves towards the direction far away from the second magnetic element 32, and the guide plate 42 is driven by the transmission structure 50 to move towards the direction far away from the mounting seat 10, so that the supporting and protecting device can play a supporting and protecting role.

As shown in fig. 2, in the present embodiment, the carrying seat 60 includes a bottom plate 61 and a shroud 62 connected to the bottom plate 61, and the first magnetic member 31 is disposed on the bottom plate 61 and located in the shroud 62. The above arrangement makes the position of the first magnetic member 31 in the carrying seat 60 more stable, i.e. makes the process of approaching the first magnetic member 31 and the second magnetic member 32 to each other more stable.

As shown in fig. 2, in the present embodiment, the transmission structure 50 includes a gear 51, a first rack 52, and a second rack 53, the first rack 52 is provided on a side of the guide plate 42 facing the shroud plate 62, the second rack 53 is provided on a side of the shroud plate 62 facing the guide plate 42, the gear 51 is fixed inside the guide cylinder 41 and between the first rack 52 and the second rack 53, and the gear 51 is engaged with both the first rack 52 and the second rack 53. When the guide plate 42 moves towards the direction close to the mounting seat 10, the first rack 52 arranged on the guide plate 42 also moves towards the direction close to the mounting seat 10, so that the gear 51 is driven to rotate clockwise, the second rack 53 arranged on the coaming 62 is further driven to move towards the direction far away from the mounting seat 10, namely, the coaming 62 moves towards the direction far away from the mounting seat 10, and meanwhile, the first magnetic piece 31 arranged on the bottom plate 61 is driven to move towards the second magnetic piece 32, so that repulsive force between the first magnetic piece 31 and the second magnetic piece 32 is gradually increased, impact forces transmitted by the first support structure 20 are offset, and the support protection device plays a role in protection.

In the present embodiment, as shown in fig. 2, the restoring member 70 is a tension spring 71. The extension spring 71 is disposed between the bottom plate 61 and the guide cylinder 41, so that the extension spring 71 can provide a restoring force for moving the bearing seat 60 in a direction approaching the mounting seat 10, that is, after the repulsive force between the first magnetic member 31 and the second magnetic member 32 is increased to the maximum, the extension spring 71 can move the bearing seat 60 in a direction approaching the mounting seat 10, and then the second rack 53 moves in a direction approaching the mounting seat 10, so that the gear 51 is driven to rotate anticlockwise, and meanwhile, the guide plate 42 moves along with the first rack 52 in a direction away from the mounting seat 10, so that the first magnetic member 31 and the second magnetic member 32 are away from each other, and the support protection device plays a support protection role.

Of course, in an embodiment not shown in the figures, the restoring element 70 may also be a compression spring, in which case no transmission structure 50 or compression spring is provided between the guide plate 42 and the guide cylinder 41.

As shown in fig. 1, in the present embodiment, the support and protection device further includes a second support structure 80 covered on the outer side of the first support structure 20, the second support structure 80 includes an arch-shaped roof 81, and a first stand 82 and a second stand 83 connected to both sides of the arch-shaped roof 81, a space is provided between the support roof 21 and the arch-shaped roof 81, the support and protection device further includes an elastic support member 90, and the elastic support member 90 is disposed between the support roof 21 and the arch-shaped roof 81. The first stand 82 and the second stand 83 enable the dome-shaped roof 81 to withstand a large impact force when the dome-shaped roof 81 is impacted. The elastic support member 90 is arranged at the interval between the supporting top 21 and the arched top 81, so that when the arched top 81 is impacted, the impact force can be transmitted to the supporting top 21 through the elastic support member 90, and meanwhile, the elastic force of the elastic support member 90 can offset part of the impact force, so that the supporting protection effect of the supporting protection device is better.

Preferably, in the present embodiment, the elastic support 90 is a rubber block. Of course, in the embodiment not shown in the drawings, the elastic supporting member 90 may also be a plurality of springs, and the plurality of springs are spaced apart.

As shown in fig. 1, in this embodiment, a through hole 100 is provided at the connection between the arched roof 81 and the first upright 82, the support and protection device further includes a weight block 110 and a connection rope 120, the connection rope 120 passes through the through hole 100, a first end of the connection rope 120 is connected to the first support structure 20, and a second end of the connection rope 120 is connected to the weight block 110. The through hole 100 enables the first end of the connecting rope 120 to pass through the connection position between the arch top 81 and the first stand 82 and be connected with the first support structure 20, that is, when the first support structure 20 is impacted, the first support structure 20 moves towards the direction close to the mounting seat 10, and the connecting rope 120 drives the balancing weight 110 to move towards the direction close to the arch top 81, so as to counteract the impact force suffered by part of the first support structure 20.

Preferably, a pulley is further provided at the side of the through hole 100 remote from the dome-shaped roof 81, so that the sliding of the connection rope 120 is smoother.

As shown in fig. 1, in the present embodiment, the supporting protection device further includes a limiting structure 130, where the limiting structure 130 includes a limiting groove 131 and a limiting block 132, one of the limiting groove 131 and the limiting block 132 is disposed on a side of the first stand 82 facing the counterweight 110, and the other of the limiting groove 131 and the limiting block 132 is disposed on a side of the counterweight 110 facing the first stand 82. The balancing weight 110 can drive the stopper 132 to slide in the limiting groove 131 towards the arch top 81 direction until the stopper 132 contacts with the side surface of one side of the limiting groove 131, which is close to the arch top 81, and the balancing weight 110 can not move any more, and can also transmit the force towards the arch top 81 direction to the first support structure 20, so that the support protection device is prevented from being damaged due to the large impact force.

Specifically, in the present embodiment, the limiting groove 131 is disposed on a side of the first stand 82 facing the counterweight 110, and the limiting block 132 is disposed on a side of the counterweight 110 facing the first stand 82.

As shown in fig. 1, in the present embodiment, the mount 10 is provided on a side of the first stand 82 facing the second stand 83. The mount pad 10 sets up in the side of first grudging post 82 towards second grudging post 83, i.e. mount pad 10 sets up in the space that arched roof 81, first grudging post 82 and second grudging post 83 constitute, and likewise, first bearing structure 20, first buffer structure 30, transmission structure 50, bear seat 60 and reset piece 70 also set up in the space that arched roof 81, first grudging post 82 and second grudging post 83 constitute, be convenient for like this to support protector's maintenance and installation, also can avoid first bearing structure 20, first buffer structure 30, transmission structure 50, bear seat 60 and reset piece 70 directly receive the impact, and then influence support protector's protection effect.

Preferably, a support plate is provided between the side of the mounting base 10 away from the arched roof 81 and the first upright 82, and a triangular space is formed between the support plate and the mounting base 10, so that the position of the mounting base 10 is more stable. The first support leg 22 extends toward the second stand 83, and the second support leg 23 extends toward the first stand 82.

The second stand 83 is also provided with the mount 10 on the side facing the first stand 82 and is in contact engagement with the second support leg 23, and the mount 10 is provided with the first buffer structure 30, the guide structure 40, the transmission structure 50, the carrier 60, and the reset member 70. The stress of the supporting and protecting device is more reasonable, and the supporting and protecting device can bear larger impact force, so that the protecting effect of the supporting and protecting device is better.

Specifically, in this embodiment, the supporting and protecting device works as follows:

1. The arched roof 81 is impacted, and the elastic support 90 absorbs part of the impact force, namely, the first-stage buffering is performed at the elastic support 90;

2. The elastic supporting piece 90 transmits the impact force to the first supporting structure 20, the first supporting structure 20 moves towards the direction away from the arched top 81, the second magnetic piece 32 is driven to move towards the direction close to the first magnetic piece 31, meanwhile, the first rack 52 moves along with the guide plate towards the direction close to the mounting seat 10, the gear 51 is driven to rotate clockwise, the second rack 53 matched with the gear 51 can move towards the direction away from the mounting seat 10, namely, the first magnetic piece 31 arranged on the bearing seat 60 is driven to move towards the direction close to the second magnetic piece 32, the repulsive force of the first magnetic piece 31 and the second magnetic piece 32 is gradually increased, part of the impact force is counteracted, and the second-stage buffering is realized;

3. In the process that the first supporting structure 20 moves towards the direction close to the installation seat 10, the connecting rope 120 can drive the balancing weight 110 to move towards the direction close to the arched roof 81, and the balancing weight 110 is limited under the action of the limiting block 132 and the limiting groove 131, so that part of impact force is offset, and third-stage buffering is realized.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A support guard, comprising:

A mounting base (10);

The first support structure (20) is positioned above the mounting seat (10), and the first support structure (20) comprises a support top (21), and a first support foot part (22) and a second support foot part (23) which are arranged on two sides of the support top (21);

The first buffer structure (30) comprises a first magnetic part (31) and a second magnetic part (32), wherein the first magnetic part (31) is arranged on the mounting seat (10), the second magnetic part (32) is arranged on the first supporting foot part (22), and the first magnetic part (31) and the second magnetic part (32) are in repulsive fit;

And a guide structure (40) arranged between the mounting seat (10) and the first supporting foot (22).

2. Support guard according to claim 1, characterized in that the guiding structure (40) comprises a guiding cylinder (41) and a guiding plate (42) nested together, the guiding cylinder (41) being arranged on the mounting base (10), the guiding plate (42) being arranged on the first support foot (22), the first magnetic element (31) being arranged in the guiding cylinder (41), the second magnetic element (32) being arranged in the guiding plate (42).

3. Support guard according to claim 2, further comprising a transmission structure (50), a carrier (60) and a return element (70), the carrier (60) being movably arranged in the guide cylinder (41) in the guiding direction of the guide structure (40), the guide plate (42) driving the carrier (60) towards the second magnetic element (32) by means of the transmission structure (50), the return element (70) being located between the guide cylinder (41) and the carrier (60) and exerting a return force on the carrier (60) away from the second magnetic element (32), the first magnetic element (31) being arranged in the carrier (60).

4. A support guard according to claim 3, characterized in that the carrier (60) comprises a base plate (61) and a shroud (62) connected to the base plate (61), the first magnetic element (31) being arranged on the base plate (61) and being located in the shroud (62).

5. The support and protection device according to claim 4, characterized in that the transmission structure (50) comprises a gear (51), a first rack (52) and a second rack (53), the first rack (52) being arranged on the side of the guiding plate (42) facing the coaming (62), the second rack (53) being arranged on the side of the coaming (62) facing the guiding plate (42), the gear (51) being fixed inside the guiding cylinder (41) and being located between the first rack (52) and the second rack (53), the gear (51) being in engagement with both the first rack (52) and the second rack (53).

6. A support guard according to claim 3, characterized in that the return element (70) is a tension spring (71).

7. The support guard according to any one of claims 1 to 6, further comprising a second support structure (80) covering the outside of the first support structure (20), the second support structure (80) comprising an arched roof (81) and a first (82) and a second (83) stand connected to both sides of the arched roof (81), the support roof (21) and the arched roof (81) having a spacing therebetween, the support guard further comprising a resilient support (90), the resilient support (90) being arranged between the support roof (21) and the arched roof (81).

8. The support and protection device according to claim 7, characterized in that the connection of the arched roof (81) and the first upright (82) is provided with a through hole (100), the support and protection device further comprises a balancing weight (110) and a connecting rope (120), the connecting rope (120) passes through the through hole (100), a first end of the connecting rope (120) is connected with the first support structure (20), and a second end of the connecting rope (120) is connected with the balancing weight (110).

9. The support guard of claim 8, further comprising a limit structure (130), the limit structure (130) comprising a limit slot (131) and a limit block (132), one of the limit slot (131) and the limit block (132) being disposed on a side of the first stand (82) facing the weight (110), the other of the limit slot (131) and the limit block (132) being disposed on a side of the weight (110) facing the first stand (82).

10. Support guard according to claim 7, characterized in that the mounting seat (10) is arranged on the side of the first stand (82) facing the second stand (83).