CN112081343A - Fast-assembling elevator well - Google Patents

Abstract

The invention provides a fast-assembling elevator shaft, which comprises: the manhole cover comprises a frame, glass, a fixing device and a manhole cover; the frame is of a cuboid net structure, glass is mounted on the frame through a fixing device, a well cover is covered on the top of the frame, a distance is reserved between the well cover and the outer wall of the glass, and a gap is reserved between the well cover and the frame; the frame includes: at least two frame sections, one frame section is arranged corresponding to each floor; each frame section includes: the four-section steel frame comprises four guide parts, four longitudinal beams and two connecting rings, wherein the outer walls of the two connecting rings are connected to the four longitudinal beams, the lower end of each longitudinal beam is detachably connected with one guide part, and the guide parts slide into the top ends of the longitudinal beams in adjacent frame sections below when being used for hoisting. The fast-assembling elevator shaft solves the problem that two adjacent longitudinal beams are aligned when being hoisted due to the fact that no guide exists between the two adjacent vertical longitudinal beams in the prior art.

Description

A quick-installed elevator shaft

technical field

The invention relates to an elevator, in particular to a quick-installed elevator shaft.

Background technique

The Chinese patent discloses an anti-seismic elevator shaft steel frame structure with an application number of CN201821208498.0. The anti-seismic elevator shaft steel frame structure includes a plurality of vertical longitudinal beams vertically arranged and distributed with the ground, and distributed among the vertical longitudinal beams. A connecting beam is provided, and a longitudinal transition splicing block is arranged between the adjacent vertical longitudinal beams from bottom to top, and the two ends of each connecting beam and the vertical longitudinal beam are connected by a horizontal transition splicing block. The bottoms of the vertical longitudinal beams arranged at the lower end are all provided with adjustable damping and shock absorption devices. Although the seismic-resistant elevator shaft steel frame structure can achieve the seismic effect to a certain extent, the steel frame structure still has the following shortcomings:

There is no guide between two adjacent vertical longitudinal beams. When splicing, it is difficult for the longitudinal beam suspended above to align with the longitudinal beam below, which increases the difficulty of hoisting and increases the assembly time.

SUMMARY OF THE INVENTION

The present invention aims to provide a quick-installed elevator shaft, which solves the problem of alignment of two adjacent vertical beams during hoisting due to lack of guidance between two adjacent vertical longitudinal beams in the prior art.

To achieve the above object, the present invention has adopted the following technical solutions:

The invention provides a quick-installed elevator shaft, comprising: a frame, a glass, a fixing device and a manhole cover; the frame is a rectangular parallelepiped network structure, the glass is installed on the frame by the fixing device, the top of the frame is covered with a manhole cover, and the manhole cover is connected to the outer wall of the glass. There is a distance between the manhole covers and the frame; the frame includes: at least two frame sections, and a frame section is arranged corresponding to each floor; each frame section includes: four guide parts, four longitudinal beams and two connections The outer walls of the two connecting rings are connected to the four longitudinal beams, and the lower end of each longitudinal beam can be detachably connected with a guide part, and the guide part is used to slide into the top of the longitudinal beam in the adjacent frame section below when hoisting. .

Preferably, each guide part includes: four guide pieces, the top of each guide piece is threadedly connected to the lower end of the longitudinal beam where it is located through a first screw, and the lower end of each guide piece extends toward the centerline of the longitudinal beam where it is located, The lower end of each guide piece is used to extend into the top end of the adjacent longitudinal beam below.

Preferably, each guide part includes: a first connecting block, a connecting ring, a guide cone, an elastic piece, a second connecting block and a pressing mechanism, and in two adjacent frame sections, the first connecting block passes through the second connecting block. The screw is connected to the lower end of the longitudinal beam of the upper frame section, the first connecting block is connected with a connecting ring, the outer thread of the connecting ring is connected with a guide cone, the connecting ring is connected with the second connecting block through an elastic piece, and the second connecting block can only be connected relative to each other. The ring moves in the radial direction of the connecting ring, and the top of the longitudinal beam of the lower frame section is equipped with a pressing mechanism, which can keep the second connecting block close to the center of the connecting ring under the elastic force of the elastic member. The pressing mechanism is used when the second connecting block and the guide cone After the cylinder is inserted into the top end of the longitudinal beam of the lower frame section, the second connection block is pressed against the inner wall of the longitudinal beam, and the second connection block is connected with the longitudinal beam through the third screw.

Preferably, the fixing device includes: a convex edge, a stopper and a connecting component, the steel frame is protruded with a convex edge, the convex edge is located inside the glass, the stopper is located outside the glass, and the stopper is connected to the adjacent two glasses through the connecting component. Detachable connection between steel frames.

Preferably, the manhole cover includes: a support frame, a top plate and two side plates; the top plate has an inverted V-shaped structure, and the top plate includes: at least two middle plates and two end plates, after all the middle plates are spliced, the two end plates are spliced on the free ends of the middle plate , one end of each intermediate plate is extended with a first n-type plate, one end of each intermediate plate is extended with a second n-type plate, and the end of each end plate close to the intermediate plate is extended with a first n-type plate or a second n-type plate, The second n-type plate is covered on the first n-type plate, and a vertical plate extends from the end of each end plate away from the middle plate, and the vertical plate is located in the vertical direction; both ends of the top plate are closed by two side plates; There is a support frame, the support frame is surrounded by the top plate and the side plate, the support frame is used to connect with the elevator shaft, and each vertical plate and the side plate have a distance from the outer wall of the elevator shaft.

Compared with the prior art, the present invention has the following beneficial effects:

When the elevator shaft is installed in the current state, the upper frame section can be hoisted. Even if it is a little cheap during the hoisting process, under the guidance of the guide part, the upper frame section can be aligned with the lower frame section, which reduces the difficulty of hoisting. Improved installation efficiency.

Other advantages, objects, and features of the present invention will appear in part from the description that follows, and in part will be appreciated by those skilled in the art from the study and practice of the invention.

Description of drawings

Fig. 1 is the structural representation at the frame place in the quick-install elevator shaft in embodiment 1;

Fig. 2 is an enlarged view of the guide portion in Fig. 1;

Fig. 3 is the structural representation at the frame place in the quick-installed elevator shaft in embodiment 2;

Fig. 4 is an enlarged view of the guide portion in Fig. 3;

Fig. 5 is the structural representation of the fixing device in the quick-installed elevator shaft in Embodiment 1;

6 is a schematic view of the fixing device in the quick-installed elevator shaft in Embodiment 3 after being cut in a direction parallel to the glass;

7 is a schematic view of the fixing device in the quick-installed elevator shaft in Embodiment 3 after being cut in a direction perpendicular to the glass;

Fig. 8 is the structural representation of the waterproof and breathable elevator shaft cover of the quick-installed elevator shaft;

9 is a schematic structural diagram of a waterproof and breathable elevator shaft cover for quick-installing the elevator shaft after the side plate is opened;

FIG. 10 is an enlarged view of A in FIG. 9 .

Reference numerals: guide part 1, first connecting block 11, connecting ring 12, guide cone 13, elastic piece 14, first shackle 141, second shackle 142, second connecting block 15, pressing mechanism 16, Triangular block 161, extrusion wheel 162, mounting rod 163, mounting block 164, first sliding block 17, rotating shaft 18, longitudinal beam 2, connecting ring 3, stop block 41, connecting assembly 42, second sliding block 421, tooth Strip 422, gear 423, rotating rod 424, limit ring 241, nut 242, oval wheel 425, slot cover 426, connecting rod 427, guide rail 428, frame 43, glass 44, second spring 45, third shackle 451 , the fourth shackle 452 , the support frame 51 , the top plate 52 , the middle plate 521 , the end plate 522 , the side plate 53 , the first n-type plate 54 , the second n-type plate 55 , the protruding rod 56 , and the hanging rod 57 .

Detailed ways

In order to make the technical means realized by the present invention, the creation features, the achievement of the purpose and the effect clearer and easier to understand, the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments:

Example 1:

As shown in FIG. 1 and FIG. 2, this embodiment proposes a quick-installed elevator shaft, including: a frame 43, a glass 44, a fixing device and a manhole cover; the frame 43 is a cuboid mesh structure, and the frame 43 is installed with a fixing device There is glass 44, the top of the frame 43 is covered with a manhole cover, there is a distance between the manhole cover and the outer wall of the glass 44, and there is a gap between the manhole cover and the frame 43; the frame 43 includes: at least two frame sections, and each floor is provided with a frame section; Each frame section includes: four guide parts 1, four longitudinal beams 2 and two connecting rings 312, the outer walls of the two connecting rings 312 are connected to the four longitudinal beams 2, and the lower end of each longitudinal beam 2 can be disassembled A guide portion 1 is connected, and the guide portion 1 is used to slide into the top end of the longitudinal beam 2 in the adjacent frame section below during hoisting.

In order to design the guide portion 1 with a simple structure, each guide portion 1 includes: four guide pieces, the top of each piece of guide piece is threadedly connected to the lower end of the longitudinal beam 2 through a first screw, and the lower end of each piece of guide piece is threaded toward the lower end of the longitudinal beam 2. The center line of the longitudinal beam 2 where it is located extends, and the lower end of each guide piece is used to extend into the top end of the adjacent longitudinal beam 2 below.

As shown in FIG. 5 , the fixing device includes: a convex edge (not shown in the figure), a block 41 and a connecting component 42 , a convex edge is formed on the steel frame, the convex edge is located inside the glass 44 , and the block 41 is located in the glass 44 On the outside, the block 41 is detachably connected to the steel frame between the two adjacent glasses 44 through the connecting assembly 42 . It avoids the need to punch holes on the glass 44 and causes troubles in operation, reduces the cost of punching holes on the tempered glass 44, and realizes the cooperation between the raised edge and the stopper 41 to clamp the glass 44, and the stopper can be realized by only using the connecting assembly 42. The installation of the block 41 facilitates the rapid assembly of the glass 44 on the steel frame directly on site.

In order to design the connecting assembly 42 with a simple structure, the connecting assembly 42 includes: a first screw, and the first screw is threadedly connected to the steel frame between the two adjacent glasses 44 after passing through the block 41 .

As shown in Figures 8 to 10, the manhole cover includes: a support frame 51, a top plate 52 and two side plates 53; the top plate 52 is an inverted V-shaped structure, and the top plate 52 includes: at least two middle plates 521 and two end plates 522, all middle plates After the 521 is spliced, the two end plates 522 are spliced on the free end of the middle plate 521. One end of each middle plate 521 is extended with a first n-type plate 54, one end of each middle plate 521 is extended with a second n-type plate 55, and each end plate 522 A first n-type plate 54 or a second n-type plate 55 extends near the end of the middle plate 521 , the second n-type plate 55 covers the first n-type plate 54 , and each end plate 522 extends away from the end of the middle plate 521 There is a vertical plate, and the vertical plate is located in the vertical direction; both ends of the top plate 52 are closed by two side plates 53; a support frame 51 is provided below the top plate 52, and the support frame 51 is surrounded by the top plate 52 and the side plate 53, and the support frame 51 For connecting with the elevator shaft, each vertical plate and the side plate 53 have a distance from the outer wall of the elevator shaft.

In order to further reduce the probability that the middle plate 521 and the end plate 522 are separated from each other, a protruding rod 56 protrudes from the top of the support frame 51 , and the protruding rod 56 is covered by the first n-type plate 54 . The protruding rod 56 blocks the separation of the first n-type plate 54, and the first n-type plate 54 blocks the separation of the second n-type plate 55, thereby ensuring the stable effect after installation and avoiding the occurrence of gaps due to poor adhesion of the sealant. detachment phenomenon.

In order to reduce the probability of the side plate 53 being detached from the support frame 51 , a U-shaped block (not shown in the figure) protrudes from the side of the side plate 53 close to the support frame 51 , and the U-shaped block is hung on the support frame 51 . Rod 57. Since the side plate 53 has a tendency to fall downward, in order to prevent the side plate 53 from falling off, the U-shaped block and the hanging rod 57 are designed to cooperate. stability after connection.

Embodiment 2: The difference between this embodiment and Embodiment 1 is that this embodiment only faces the guide portion 1 on the basis of Embodiment 1, and reduces the possibility that the upper frame section is deviated relative to the lower frame section after the installation is completed.

As shown in FIG. 3 and FIG. 4 , each guide portion 1 includes: a first connecting block 11 , a connecting ring 312 , a guide cone 13 , an elastic member 14 , a second connecting block 15 and a pressing mechanism 16 . In the two frame sections, the first connecting block 11 is connected to the lower end of the longitudinal beam 2 of the upper frame section through the second screw, the first connecting block 11 is connected with a connecting ring 312, and the outer thread of the connecting ring 312 is connected with the guide cone 13, connecting the The ring 312 is connected to the second connecting block 15 through the elastic member 14. The second connecting block 15 can only move relative to the connecting ring 312 in the radial direction of the connecting ring 312. The top end of the longitudinal beam 2 of the lower frame section is installed with a pressing mechanism 16. 14. The second connecting block 15 can be kept close to the center of the connecting ring 312 under the elastic force. The pressing mechanism 16 is used to press the second connecting block 15 and the guide cone 13 into the top end of the longitudinal beam 2 of the lower frame section. 15 is pressed on the inner wall of the longitudinal beam 2, and the second connecting block 15 is connected to the longitudinal beam 2 where it is located through a third screw.

In order to design the pressing mechanism 16 with a simple structure, the pressing mechanism 16 includes: a triangular block 161, a pressing wheel 162, a mounting rod 163 and a mounting block 164. The mounting block 164 is installed in the top end of the longitudinal beam 2 by a fourth screw, and the mounting block 164 is fixed with a mounting rod 163, the end of the mounting rod 163 facing away from the mounting block 164 is installed with a rotatable extrusion wheel 162, the extrusion wheel 162 is tangent to the inclined surface of the triangular block 161, and the angle between the inclined surface of the triangular block 161 and the vertical direction For an acute angle, the triangular block 161 is fixed to the side of the second connecting block 15 close to the centerline of the longitudinal beam 2 .

In order to realize the installation of the second connecting block 15 and the connecting ring 312 , the top end of the second connecting block 15 is connected to one end of the rotating shaft 18 , the other end of the rotating shaft 18 is connected to the first sliding block 17 , and the bottom of the connecting ring 312 is recessed for the first sliding The chute where the block 17 slides, the guide cone 13 prevents the first sliding block 17 from disengaging from the chute, and the center of the guide cone 13 is provided with a rotation hole for the rotating shaft 18 to rotate. The inner wall of the rotation hole is recessed to form a moving groove for the rotation shaft 18 to slide.

In order to facilitate the installation of the elastic member 14, the elastic member 14 is a first spring, the first shackle 141 and the second shackle 142 extend from both ends of the first spring, and a second shackle for hooking the first shackle 141 is formed on the wall of the chute. A hook rod, the first sliding block 17 is formed with a second hook rod for hooking the second hook ring 142, the guide cone 13 can restrict the first hook ring 141 from disengaging from the first hook rod, and the second hook ring 142 from the first hook rod. The second hook lever is disengaged.

During installation, first, insert the first connecting block 11 (the first connecting block 11 and the connecting ring 312 are integrally formed during manufacture, avoiding the risk of the connecting ring 312 and the first connecting block 11 being separated) into the upper frame section; Then, insert your fingers into the upper frame section to hold down the second screw, and screw the end of the second screw extending out of the longitudinal beam 2 with the second nut 242 to lock the first connecting block 11 in the longitudinal direction. On the beam 2, the first connecting block 11 and the second connecting block 15 are both L-shaped structures, and the gap between the first connecting block 11 and the connecting ring 312 and the inner wall of the longitudinal beam 2 is enough for fingers to penetrate; The block 17 (the first sliding block 17 and the rotating shaft 18 are integrally formed during production, the second hook rod is formed by cutting in the later stage, and the low end of the rotating shaft 18 is threadedly connected with the second connecting block 15) into the chute; Then, put the first spring into the chute, the first shackle 141 on the first spring is hung on the first hook rod, and the second shackle 142 is hung on the second hook rod, maintaining this state; , the guiding cone 13 is sleeved outside the connecting ring 312, and the guiding cone 13 is threadedly connected with the connecting ring 312; then, the second connecting block 15 is threadedly connected with the low end of the rotating shaft 18; The fourth screw is installed in the top end of the longitudinal beam 2 of the lower frame section; then, the upper frame section is hoisted so that the upper frame section is aligned with the lower frame section, and then the upper frame section is slowly lowered, due to the elastic force of the first spring The second connecting block 15 is relatively close to the centerline of the longitudinal beam 2, and the guide cone 13 is of a truncated cone structure. The large end of the guide cone 13 is located above the small end of the guide cone 13, so the second The connecting block 15 and the guide cone 13 are inserted into the lower longitudinal beam 2, and finally the pressing wheel 162 squeezes the triangular block 161, so that the second connecting block 15 and the inner wall of the longitudinal beam 2 are leached; finally, the second connecting block 15 is passed through The third screw is connected with the lower longitudinal beam 2 , so as to facilitate the alignment during hoisting and ensure the possibility of preventing the upper longitudinal beam 2 from deflecting relative to the lower longitudinal beam 2 after the connection.

Example 3:

The difference between this embodiment and Embodiment 1 and Embodiment 2 is that: this embodiment only changes the connection component 42 on the basis of Embodiment 1 and Embodiment 2, and realizes that only by rotating a second screw Two pieces of glass 44 are stabilized.

As shown in FIG. 6 and FIG. 7 , the connecting assembly 42 includes: a second sliding block 421, a rack 422, a gear 423, a rotating rod 424, an oval wheel 425, a groove cover 426 and a second screw, and the block 41 can be opposite to the frame where it is located 43 slides, there is a block 41 corresponding to each glass 44 between two adjacent glasses 44, a second spring 45 is connected between the block 41 and the frame 43, and the block 41 can be maintained under the elastic force of the second spring 45 Away from the glass 44, an installation groove is opened in the frame 43, one end of two adjacent blocks 41 both extend into an installation groove, and both adjacent two blocks 41 can be in contact with an oval wheel 425, and the center of the oval wheel 425 is rotated The rod 424 passes through, the rotating rod 424 is fixed to the gear 423, the rotating rod 424 is rotatably mounted on the frame 43, the gear 423 can engage with the rack 422, and the rack 422 can be relative to the frame 43 in a direction perpendicular to the sliding direction of the stopper 41. The elliptical wheel 425 is used to squeeze the block 41 to the position facing the convex edge, the rack 422 is connected to the second sliding block 421, the groove cover 426 will cover the installation groove cover 426, and the second sliding block 421 The second sliding block 421 and the groove cover 426 are connected by a second screw when the oval wheel 425 presses the stopper 41 and is located in the groove formed by the depression on the surface of the groove cover 426 .

In order to avoid that the mounting groove can be seen exposed through the first sliding groove, the rack 422 and the second sliding block 421 are connected by a connecting rod 427, and the inner wall of the groove is recessed to form a first sliding groove for the connecting rod 427 to slide. The two sliding blocks 421 block the first chute.

In order to guide the movement of the rack 422, the rail and the slot cover 426 are fastened together to form a second sliding slot for the rack 422 to slide, and the rack 422 spans the installation slot.

In order to guide the block 41 , a guide rail 428 is installed on the inner wall of the installation groove, and the guide rail 428 is used to guide the block 41 to slide.

Before assembling the glass 44, the connecting components 42 except the second screw and the second sliding block 421 have been installed on the glass 44, and the connecting components 42 except the second screw and the second sliding block 421 are installed on the frame 43 through the following steps Top: First, the two ends of the second spring 45 extend to form the third shackle 451 and the fourth shackle 452, the frame 43 forms the first hook rod beside the installation groove, and the end of the stopper 41 located in the installation groove forms the second hook To hook the rod, hook the third hook 451 on the second spring 45 to the first hook rod; then, place the two blocks 41 on the guide rail 428, and pass the second hook rod through the fourth hook 452, The stopper 41 extends out of the installation groove; then, the rotating rod 424 is passed through the frame 43, the rotating rod 424 is fixed with the limit ring 241 located in the installation groove, and the end of the rotating rod 424 located outside the installation groove is threadedly connected with a screw. The cap 242, the nut 242 and the limit ring 241 act to limit the movement of the rotating rod 424 relative to the frame 43 in a direction parallel to the rotating rod 424, and keep the narrow edge of the elliptical wheel 425 facing the block 41; The rack 422 is placed in the second chute, the rack 422 is engaged with the gear 423, the rack 422 is fixed with one end of the connecting rod 427, and the other end of the connecting rod 427 is detachably connected with the second sliding block 421. The second sliding block 421 is provided with The socket for the connecting rod 427 to be inserted into. At this time, the rack 422 cannot be pulled to drive the gear 423 to rotate. Both ends of the rack 422 are supported by the frame 43, and the rack 422 spans the installation slot. Finally, cover the slot cover 426 on the installation slot. , the slot cover 426 is fixed on the frame 43 by the third screw. After the installation is completed, the stopper 41 can be kept away from the installation position of the glass 44 under the elastic force of the second spring 45 , so as to avoid subsequent influence on the installation of the glass 44 .

When the glass 44 is transported to the site to be assembled, first, place two adjacent glasses 44 in place: then, cover the sliding ring in the groove, and ensure that the connecting rod 427 is inserted into the sliding ring; then, pull the sliding ring to move, sliding During the movement of the ring, the rack 422 moves, the rack 422 drives the gear 423 to rotate, and the elliptical wheel 425 rotates accordingly. Thereby, the block 41 is directly opposite to the convex edge, so that the block 41 and the convex edge clamp the glass 44; finally, the sliding ring is fixed to the groove cover 426 by the second screw to realize the installation.

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 preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent replacements without departing from the spirit and scope of the technical solutions of the present invention should be included in the scope of the claims of the present invention.

Claims (5)

1. a quick-installed elevator shaft, is characterized in that, comprises: frame, glass, fixture and manhole cover; The frame is a cuboid mesh structure, the frame is installed with glass using a fixing device, the top of the frame is covered with a manhole cover, there is a distance between the manhole cover and the glass outer wall, and there is a gap between the manhole cover and the frame; The frame includes: at least two frame sections, and a frame section is arranged corresponding to each floor; each frame section includes: four guide parts, four longitudinal beams and two connecting rings, and the outer walls of the two connecting rings are connected to the four As for the longitudinal beam, the lower end of each longitudinal beam can be detachably connected with a guide part, and the guide part is used to slide into the top end of the longitudinal beam in the adjacent frame section below during hoisting. 2. A quick-installed elevator shaft according to claim 1, wherein each guide portion comprises: four guide pieces, and the top of each guide piece is threadedly connected to the lower end of the longitudinal beam through a first screw , the low end of each guide piece extends toward the centerline of the longitudinal beam where it is located, and the low end of each guide piece is used to extend into the top end of the adjacent longitudinal beam below. 3. A quick-installed elevator shaft according to claim 1, wherein each guide portion comprises: a first connecting block, a connecting ring, a guide cone, an elastic member, a second connecting block and a pressing mechanism , in the two adjacent frame sections, the first connecting block is connected to the lower end of the longitudinal beam of the upper frame section through the second screw, the first connecting block is connected with a connecting ring, the outer thread of the connecting ring is connected with a guide cone, and the connecting ring passes through The elastic piece is connected to the second connecting block, the second connecting block can only move relative to the connecting ring in the radial direction of the connecting ring, and the top of the longitudinal beam of the lower frame section is installed with an extrusion mechanism, which can keep the second connecting block close to the connection under the elastic force of the elastic piece In the center of the ring, the pressing mechanism is used to press the second connecting block on the inner wall of the longitudinal beam after the second connecting block and the guide cone are inserted into the top of the longitudinal beam of the lower frame section, and the second connecting block is connected to the inner wall of the longitudinal beam through the third screw. where the stringer is connected. 4. A quick-installed elevator shaft according to claim 1, wherein the fixing device comprises: a convex edge, a stopper and a connecting assembly, the steel frame is protruded and formed with a convex edge, the convex edge is located on the inner side of the glass, and the blocking The block is located on the outside of the glass, and the block is detachably connected to the steel frame between two adjacent glasses through a connecting assembly. 5. A kind of quick-loading elevator shaft according to claim 1 is characterized in that, the manhole cover comprises: a support frame, a top plate and two side plates; the top plate is an inverted V-shaped structure, and the top plate comprises: at least two middle plates and two end plates , after all the middle plates are spliced, the two end plates are spliced on the free end of the middle plate, one end of each middle plate is extended with a first n-type plate, one end of each middle plate is extended with a second n-type plate, and each end plate is close to the middle plate. The end portion is extended with a first n-type plate or a second n-type plate, the second n-type plate covers the first n-type plate, and the end of each end plate away from the middle plate is extended with a vertical plate, and the vertical plate is located vertically. direction; both ends of the top plate are closed by two side plates; a support frame is arranged under the top plate, the support frame is surrounded by the top plate and the side plate, the support frame is used to connect with the elevator shaft, and each vertical plate and side plate are connected to the elevator shaft There are distances between the outer walls.

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