Decorative deformation joint construction for an earthquake-resistant escalator

Abstract

The application relates to a decorative deformation joint structure of an anti-seismic electric escalator, and relates to the technical field of deformation joint construction, which comprises a first mounting base installed on a lap joint cover plate, a first adjusting rod with one end flexibly connected to the first mounting base, a second mounting base installed on a foundation pit, a second adjusting rod with one end flexibly connected to the second mounting base, a connecting sleeve pipe, the first adjusting rod and the second adjusting rod being slidably arranged in the connecting sleeve pipe, a decorative cover plate, both ends of the decorative cover plate being respectively arranged on the first mounting base and the second mounting base, and the middle part of the decorative cover plate being connected with the connecting sleeve pipe, and the first adjusting rod and the second adjusting rod being provided with adjustable springs capable of being pressed and pulled between the first adjusting rod, the second adjusting rod and the connecting sleeve pipe, the first adjusting rod and the second adjusting rod being capable of rigidly supporting the decorative cover plate, and the parts of the first adjusting rod and the second adjusting rod penetrating out of the connecting sleeve pipe being capable of being bent towards the direction of moving away from each other. The application can prevent the lap joint cover plate and the foundation pit from being damaged due to the jamming caused by the deformation joint structure.

Description

Technical Field

[0001] This invention relates to the technical field of expansion joint construction, and in particular to a decorative expansion joint structure for an earthquake-resistant escalator. Background Technology

[0002] Escalators in large buildings are usually equipped with seismic isolation structures to cope with the damage caused by earthquakes. There is space between the bottom of the escalator and the inner wall of the pit for relative displacement. To facilitate people to climb the escalator, an overlapping cover plate is hinged to the bottom of the escalator. The overlapping cover plate slides and is supported on the pit. Expansion joints are usually installed between the overlapping cover plate and the pit.

[0003] The existing expansion joint structure includes two aluminum alloy bases installed on the overlapping cover plate and the foundation pit, respectively. Each aluminum alloy base is connected to a slide rail, and a sliding ball is slidably installed in each slide rail. An inclined connecting rod is connected between the two sliding balls. The aluminum alloy cover plate is supported by the two aluminum alloy bases. The aluminum alloy cover plate is connected to the middle of the connecting rod. When the overlapping cover plate moves relative to the foundation pit, the two slide rails can drive the connecting rod to swing through the sliding balls, so that the aluminum alloy cover plate is always positioned in the middle of the overlapping cover plate and the foundation pit.

[0004] In the above scheme, although the swing angle of the connecting rod can be adjusted by the sliding of the ball in the slide to adapt to the change in the distance between the two aluminum alloy bases, the friction coefficient between the ball and the slide will increase after a long period of friction, and the sliding ability of the ball relative to the slide will decrease, making the ball easy to get stuck relative to the slide. When the overlapping cover plate approaches the pit along the axis of the connecting rod, the expansion joint structure is prone to damage during the compression of the connecting rod. Summary of the Invention

[0005] In order to prevent the expansion joint structure from being damaged by the overlapping cover plate and the foundation pit due to wear and tear, the present invention provides a decorative expansion joint structure for an earthquake-resistant escalator.

[0006] The present invention provides a decorative expansion joint structure for an earthquake-resistant escalator, which adopts the following technical solution:

[0007] A decorative expansion joint structure for an earthquake-resistant escalator includes:

[0008] The first mounting bracket is installed on the overlapping cover plate;

[0009] The first adjusting rod has one end flexibly connected to the first mounting base;

[0010] The second mounting bracket is installed on the foundation pit;

[0011] The second adjusting rod is flexibly connected at one end to the second mounting base;

[0012] A connecting sleeve is located between the first mounting base and the second mounting base, and the first adjusting rod and the second adjusting rod are slidably inserted into the connecting sleeve in a staggered manner.

[0013] The decorative cover plate is mounted on the first mounting base and the second mounting base at both ends, and the middle part of the decorative cover plate is connected to the connecting sleeve.

[0014] in,

[0015] Both the first and second adjusting rods are equipped with adjusting springs between themselves and the connecting sleeve. The adjusting springs are in a state that can be compressed or stretched.

[0016] The portion of the first adjusting rod located between the first mounting base and the connecting sleeve is in a rigid support state, and the portion of the second adjusting rod located between the second mounting base and the connecting sleeve is in a rigid support state. The portions of the first adjusting rod extending out of the connecting sleeve and the portions of the second adjusting rod extending out of the connecting sleeve can be bent in directions away from each other.

[0017] Optionally, the flexible connection structure between the first adjusting rod and the first mounting base is the same as the flexible connection structure between the second adjusting rod and the second mounting base. The flexible connection structure between the first adjusting rod and the first mounting base includes a connecting block, a connecting ball, and an elastic cover. The connecting block is connected to the first mounting base, and an adjusting groove is provided on the connecting block. One side of the connecting ball is fitted into the adjusting groove, and the other side is connected to the first adjusting rod. The elastic cover is placed on the connecting ball and connected to the connecting block. The elastic cover is used to drive the connecting ball to abut against the connecting block.

[0018] Optionally, the connecting block is made of ferromagnetic material, the connecting ball is made of magnetic material, and the connecting block and the connecting ball are magnetically connected.

[0019] Optionally, the first adjusting rod and the second adjusting rod have the same structure. The first adjusting rod is formed by hinged ends of multiple short adjusting rods. The hinge axis of two adjacent short adjusting rods is located on the side of the first adjusting rod away from the second adjusting rod. A limiting component is provided at the hinge of each of the two adjacent short adjusting rods. The limiting component is used to limit the swing state of the two adjacent short adjusting rods. When the limiting component is located between the first mounting base and the connecting sleeve, the limiting component is used to limit the relative swing of the two adjacent short adjusting rods. When the limiting component slides past the connecting sleeve, the limiting component is used to release the swing restriction of the two adjacent short adjusting rods.

[0020] Optionally, the limiting component includes a limiting block, and a rotating groove is provided at the hinge of two adjacent adjusting rods. Half of the rotating groove is located on one of the adjusting rods, and the other half is located on the other adjusting rod. The limiting block is adapted to rotate within the rotating groove. The limiting block includes a first limiting half and a second limiting half. The first limiting half or the second limiting half can be completely located on one of the adjusting rods, and the first limiting half or the second limiting half can also be completely located on the other adjusting rod.

[0021] Optionally, a lever is connected to the first limiting half-block. The lever is slidably disposed in a switching groove opened on the inner side wall of the connecting sleeve. The switching groove includes a first groove segment, a second groove segment, and a third groove segment. The first groove segment, the second groove segment, and the third groove segment are arranged sequentially along the direction in which the first adjusting rod passes through the connecting sleeve. The lever can slide into the first groove segment, slide from the first groove segment through the second groove segment into the third groove segment, and slide out from the third groove segment. When the lever is located in the first groove segment, the first limiting half-block is not completely located on one of the adjusting rods. When the lever is located in the third groove segment, the first limiting half-block is completely located on one of the adjusting rods.

[0022] Optionally, a first locking groove and a second locking groove are provided on the side wall of the first limiting half block, and a locking slide groove is provided on the groove wall of the rotating groove. A locking ball is slidably disposed in the locking slide groove, and a locking spring is provided between the locking ball and the bottom of the locking slide groove. The locking spring is used to drive the locking ball to lock in the first locking groove or the second locking groove. When the locking ball is locked in the first locking groove, the first limiting half block is not completely located on one of the adjusting rods. When the locking ball is locked in the second locking groove, the first limiting half block is completely located on one of the adjusting rods.

[0023] Optionally, the connecting sleeve includes a top plate, a bottom plate, and two side plates. The top plate is connected to the decorative cover plate, the bottom plate is located below the top plate and is directly opposite the top plate, and the two side plates are located on both sides of the top plate and the bottom plate, respectively. Each side plate is detachably connected to the top plate and the bottom plate.

[0024] Optionally, guide plates are connected to both ends of the connecting sleeve. The guide plates are inclined, with the guide plate near the bent portion of the first adjusting rod guiding the first adjusting rod to bend, and the guide plate near the bent portion of the second adjusting rod guiding the second adjusting rod to bend.

[0025] Optionally, a telescopic rod is connected to the decorative cover plate. The movable end of the telescopic rod is rotatably connected to the connecting sleeve. A buffer spring is provided between the movable end and the fixed end of the telescopic rod. The buffer spring is used to drive the telescopic rod to elastically return to its original position after being stretched or compressed.

[0026] In summary, the present invention has at least one of the following beneficial technical effects:

[0027] The present invention discloses a decorative expansion joint structure for an earthquake-resistant escalator, comprising a first mounting base, a first adjusting rod, a second mounting base, a second adjusting rod, a connecting sleeve, and a decorative cover plate. The first adjusting rod and the second adjusting rod are both capable of swinging in any direction relative to the first mounting base. Under the constraint of a limiting block, the first and second adjusting rods rigidly support the decorative cover plate. Under the elastic force of an adjusting spring, the first and second adjusting rods slide within the connecting sleeve, driving the decorative cover plate to move relative to the pit as the overlapping cover plate moves. Because the first and second adjusting rods can switch from a rigid support state to a bent state by rotating the limiting block, they are less likely to experience resistance when the overlapping cover plate approaches the pit. Furthermore, the sliding of the first and second adjusting rods relative to the connecting sleeve is less likely to cause jamming, preventing the expansion joint structure from being damaged by wear-induced jamming due to pressure from the overlapping cover plate and the pit. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of an embodiment of the present invention;

[0029] Figure 2 This is a structural schematic diagram showing the assembly relationship between the first adjusting rod, the second adjusting rod, and the connecting sleeve;

[0030] Figure 3 This is an exploded view of the connecting block and the connecting sphere;

[0031] Figure 4 This is a structural diagram of the limiting component;

[0032] Figure 5 This is a schematic diagram of the switching slot;

[0033] Figure 6 This is a schematic diagram of the structure of the first card slot and the second card slot.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. First mounting base; 11. Connecting block; 111. Adjusting groove; 12. Connecting ball; 13. Elastic cover; 2. First adjusting rod; 21. Adjusting short rod; 211. Rotating groove; 212. Snap-fit ​​sliding groove; 213. Limiting groove; 22. Snap-fit ​​ball; 23. Snap-fit ​​spring; 3. Second mounting base; 4. Second adjusting rod; 5. Connecting sleeve; 51. Switching groove; 511. First groove segment; 512. Second groove segment; 51 3. Third groove section; 52. Top plate; 53. Bottom plate; 54. Side plate; 55. Guide plate; 56. Connecting rod; 6. Decorative cover plate; 61. Telescopic rod; 62. Buffer spring; 7. Adjusting spring; 71. Support plate; 8. Limiting component; 81. Limiting block; 811. First limiting half block; 8111. First slot; 8112. Second slot; 812. Second limiting half block; 82. Toggle block; 83. Limiting ring. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0037] This invention discloses a decorative expansion joint structure for an earthquake-resistant escalator. (Refer to...) Figure 1 A decorative expansion joint structure for an earthquake-resistant escalator includes a first mounting base 1, a first adjusting rod 2, a second mounting base 3, a second adjusting rod 4, a connecting sleeve 5, and a decorative cover plate 6.

[0038] The first mounting base 1 is fixedly connected to the overlapping cover plate.

[0039] One end of the first adjusting rod 2 is flexibly connected to the first mounting base 1 so that the first adjusting rod 2 can swing relative to the first mounting base 1 in any direction.

[0040] The second mounting bracket 3 is fixedly connected to the foundation pit.

[0041] One end of the second adjusting rod 4 is flexibly connected to the second mounting base 3 so that the second adjusting rod 4 can swing relative to the second mounting base 3 in any direction.

[0042] The connecting sleeve 5 is located between the first mounting base 1 and the second mounting base 3, and the first adjusting rod 2 and the second adjusting rod 4 are slidably inserted into the connecting sleeve 5.

[0043] The two ends of the decorative cover plate 6 are respectively mounted on the first mounting base 1 and the second mounting base 3, and the middle part of the decorative cover plate 6 is connected to the connecting sleeve 5.

[0044] Among them, the first adjusting rod 2 and the second adjusting rod 4 are both provided with adjusting springs 7 between them and the connecting sleeve 5. The adjusting springs 7 are in a state that can be compressed or stretched so that the decorative cover plate 6 can be driven to move synchronously by elastic force when the overlapping cover plate and the foundation pit are close to or far from each other.

[0045] Reference Figure 2 In this embodiment, the end of the adjusting spring 7 is fixedly connected to a support plate 71, which is bolted to the first adjusting rod 2, the second adjusting rod 4, or the connecting sleeve 5, so that the adjusting spring 7 can be removed from the first adjusting rod 2, the second adjusting rod 4, or the connecting sleeve 5.

[0046] Reference Figure 1 and Figure 2 The portion of the first adjusting rod 2 located between the first mounting base 1 and the connecting sleeve 5 is in a rigid support state, and the portion of the second adjusting rod 4 located between the second mounting base 3 and the connecting sleeve 5 is in a rigid support state, so that the first adjusting rod 2 and the second adjusting rod 4 can provide reliable support for the positional movement of the decorative cover plate 6. The portions of the first adjusting rod 2 and the second adjusting rod 4 that extend out of the connecting sleeve 5 can be bent in a direction away from each other, so as to prevent the first adjusting rod 2 and the second adjusting rod 4 from being subjected to abutment force when the overlapping cover plate and the foundation pit approach each other.

[0047] In use, when the overlapping cover plate moves relative to the foundation pit, the first mounting base 1 can move relative to the second mounting base 3. The first mounting base 1 can drive the first adjusting rod 2 to move, so that the first adjusting rod 2 can slide relative to the connecting sleeve 5. The first adjusting rod 2 drives the connecting sleeve 5 to move through its own connecting adjusting spring 7. The connecting sleeve 5 transmits the elastic force it receives to the second adjusting rod 4 through another adjusting spring 7, so that both the first adjusting rod 2 and the second adjusting rod 4 can apply elastic force to the connecting sleeve 5. Under the action of elastic force, the connecting sleeve 5 can move the same displacement relative to the first adjusting rod 2 and the second adjusting rod 4. Under the rigid support of the first adjusting rod 2 and the second adjusting rod 4, the connecting sleeve 5 can drive the decorative cover plate 6 to move, so that the decorative cover plate 6 can always cover the overlapping cover plate and the foundation pit when the overlapping cover plate moves relative to the foundation pit.

[0048] The first adjusting rod 2 is flexibly connected to the first mounting base 1, allowing the first adjusting rod 2 to swing relative to the first mounting base 1 in any direction. The second adjusting rod 4 is flexibly connected to the second mounting base 3, allowing the second adjusting rod 4 to swing relative to the second mounting base 3 in any direction. This allows the first adjusting rod 2 and the second adjusting rod 4 to adapt to the random displacement of the overlapping cover plate relative to the foundation pit under the state of rigid support connecting sleeve 5.

[0049] During long-term sliding friction, the first adjusting rod 2 and the second adjusting rod 4 will inevitably wear down the connecting sleeve 5. However, even if the first adjusting rod 2 and the second adjusting rod 4, which are misaligned, are worn, they are unlikely to generate mutual opposing forces. The first adjusting rod 2 and the second adjusting rod 4 are unlikely to generate opposing forces due to wear against the overlapping cover plate approaching the pit. This makes it difficult for the first adjusting rod 2, the second adjusting rod 4 and the connecting sleeve 5 to get stuck due to wear. Since the parts of the first adjusting rod 2 and the second adjusting rod 4 that protrude from the connecting sleeve 5 can bend in a direction away from each other, it is difficult for the first adjusting rod 2 to abut against the pit when it is close to the pit, and it is also difficult for the second adjusting rod 4 to abut against the overlapping cover plate when it is close to the overlapping cover plate. Therefore, when the overlapping cover plate is close to the pit, the expansion joint structure is not likely to be damaged by the overlapping cover plate and the pit due to wear-induced jamming.

[0050] When the displacement of the overlapping cover plate relative to the pit exceeds the adjustment range of the first adjusting rod 2 and the second adjusting rod 4, both the first adjusting rod 2 and the second adjusting rod 4 can be disengaged from the connecting sleeve 5. The displacement of the overlapping cover plate from the pit will only damage the adjusting spring 7, and is unlikely to cause damage to the first mounting base 1, the first adjusting rod 2, the second mounting base 3, and the second adjusting rod 4. After reinserting the first adjusting rod 2 and the second adjusting rod 4 into the connecting sleeve 5 and replacing the adjusting spring 7, maintenance can be carried out quickly and at low cost.

[0051] Based on the above analysis, since the first adjusting rod 2 and the second adjusting rod 4 are not prone to jamming due to sliding friction in the connecting sleeve 5, and since the parts of the first adjusting rod 2 and the second adjusting rod 4 that protrude from the connecting sleeve 5 can be bent, the expansion joint structure is not easily damaged by the overlapping cover plate and the foundation pit due to jamming caused by wear.

[0052] Specifically, refer to Figure 2 The flexible connection structure between the first adjusting rod 2 and the first mounting base 1 is the same as the flexible connection structure between the second adjusting rod 4 and the second mounting base 3. The flexible connection structure between the first adjusting rod 2 and the first mounting base 1 includes a connecting block 11, a connecting ball 12, and an elastic cover 13.

[0053] Reference Figure 2 and Figure 3 The connecting block 11 is fixedly embedded in the first mounting base 1. An adjustment groove 111 is provided on the connecting block 11. One side of the connecting ball 12 is fitted and attached to the adjustment groove 111, and the other side is fixedly connected to the first adjustment rod 2. The elastic cover 13 covers the connecting ball 12 and is fixedly connected to the connecting block 11. The elastic cover 13 is used to drive the connecting ball 12 to abut against the connecting block 11. Under the action of the maximum elastic force of the two adjustment springs 7, the connecting ball 12 is difficult to get out of the elastic cover 13.

[0054] The elastic cover 13 stably mounts the connecting ball 12 at the adjustment groove 111 of the connecting block 11, making it difficult for the connecting ball 12 to move away from the connecting block 11. Since the elastic cover 13 can elastically deform, the first adjusting rod 2 and the second adjusting rod 4 can swing within a large range.

[0055] Reference Figure 3 In order to enable the first adjusting rod 2 to drive the connecting ball 12 to swing stably relative to the connecting block 11, the connecting block 11 is made of ferromagnetic material and the connecting ball 12 is made of magnetic material, and the connecting block 11 and the connecting ball 12 are magnetically connected.

[0056] Under the magnetic attraction of the connecting block 11 and the connecting ball 12, the connecting ball 12 is not easy to fall out of the adjusting groove 111, and since the magnetic attraction does not easily affect the rotation of the connecting ball 12 relative to the connecting block 11, the stability of the rotation of the connecting ball 12 relative to the connecting block 11 is enhanced.

[0057] Reference Figure 2 In order to enable the first adjusting rod 2 and the second adjusting rod 4 to switch between a rigid support state and a bending state, the first adjusting rod 2 and the second adjusting rod 4 have the same structure. The first adjusting rod 2 is formed by multiple adjusting short rods 21 that are hinged end to end. The hinge axis of two adjacent adjusting short rods 21 is located on the side of the first adjusting rod 2 away from the second adjusting rod 4.

[0058] Reference Figure 2 and Figure 4 Each of the two adjacent adjusting rods 21 is provided with a limiting component 8 at the hinge point. The limiting component 8 is used to limit the swing state of the two adjacent adjusting rods 21. When the limiting component 8 is located between the first mounting base 1 and the connecting sleeve 5, the limiting component 8 is used to limit the relative swing of the two adjacent adjusting rods 21. After the limiting component 8 slides past the connecting sleeve 5, the limiting component 8 is used to release the swing restriction of the two adjacent adjusting rods 21.

[0059] Under the constraint of the limiting component 8, the two adjacent adjusting rods 21 located between the first mounting base 1 and the connecting sleeve 5 or between the second mounting base 3 and the connecting sleeve 5 are unlikely to swing relative to each other, so that the two adjacent adjusting rods 21 are in a fixed state, thereby enabling the part of the first adjusting rod 2 located between the first mounting base 1 and the connecting sleeve 5 and the part of the second adjusting rod 4 located between the second mounting base 3 and the connecting sleeve 5 to be in a rigid support state.

[0060] Since the limiting component 8 can release the swing restriction between two adjacent adjusting rods 21 that protrude from the connecting sleeve 5, the two adjacent adjusting rods 21 that protrude from the connecting sleeve 5 can swing relative to each other, so that the part of the first adjusting rod 2 that protrudes from the connecting sleeve 5 and the part of the second adjusting rod 4 that protrudes from the connecting sleeve 5 can be bent.

[0061] Specifically, refer to Figure 4 The limiting component 8 includes a limiting block 81.

[0062] A rotating groove 211 is provided at the hinge of two adjacent adjusting rods 21. Half of the rotating groove 211 is located on one of the adjusting rods 21, and the other half is located on the other adjusting rod 21.

[0063] The limiting block 81 is adapted to be rotatably disposed in the rotating groove 211. The limiting block 81 includes a first limiting half block 811 and a second limiting half block 812. The first limiting half block 811 or the second limiting half block 812 can be completely located on one of the adjusting rods 21, and the first limiting half block 811 or the second limiting half block 812 can also be completely located on the other adjusting rod 21. That is, the first limiting half block 811 and the second limiting half block 812 are both adapted to the part of the rotating groove 211 on one of the adjusting rods 21.

[0064] In this embodiment, to prevent the limiting block 81 from falling out of the rotating groove 211, an annular limiting ring 83 is integrally formed on the limiting block 81, and the limiting ring 83 is rotatably disposed in the limiting groove 213 opened on the groove wall of the rotating groove 211.

[0065] When it is necessary to restrict the swing of two adjacent adjusting rods 21, rotate the limiting block 81 so that the first limiting half block 811 is not completely located on one of the adjusting rods 21, and at the same time, the second limiting half block 812 is not completely located on the other adjusting rod 21. This allows both the first limiting half block 811 and the second limiting half block 812 to block the swing of the two adjusting rods 21, making it difficult for the two adjacent adjusting rods 21 to swing relative to each other.

[0066] When it is necessary to release the swing restriction on two adjacent adjustment rods 21, rotate the restriction block 81 so that the first restriction half block 811 is completely on one of the adjustment rods 21, and at the same time, the second restriction half block 812 is completely on the other adjustment rod 21. This makes it difficult for the first restriction half block 811 and the second restriction half block 812 to block the swing of the two adjustment rods 21, thereby allowing the two adjacent adjustment rods 21 to swing relative to each other.

[0067] Reference Figure 2 , Figure 4 and Figure 5 In order to enable the first adjusting rod 2 to automatically switch between rigid support state and bending state after passing through the connecting sleeve 5, a lever 82 is fixedly connected to the first limiting half block 811. The lever 82 is slidably disposed in the switching groove 51 opened on the inner side wall of the connecting sleeve 5.

[0068] Reference Figure 2 and Figure 5The switching slot 51 includes a first slot segment 511, a second slot segment 512 and a third slot segment 513. The first slot segment 511, the second slot segment 512 and the third slot segment 513 are arranged sequentially along the direction in which the first adjusting rod 2 passes through the connecting sleeve 5. The second slot segment 512 smoothly transitions with the first slot segment 511 and the third slot segment 513 respectively.

[0069] Reference Figure 4 and Figure 5 The lever 82 can slide into the first slot 511, and from the first slot 511 through the second slot 512 into the third slot 513, and the lever 82 can slide out from the third slot 513. When the lever 82 is in the first slot 511, the first limiting half block 811 is not completely located on one of the adjusting rods 21. When the lever 82 is in the third slot 513, the first limiting half block 811 is completely located on one of the adjusting rods 21.

[0070] The lever 82 can slide into the first groove 511 along with the first adjusting rod 2. Guided by the second groove 512, the lever 82 can slide into the third groove 513. When the lever 82 slides from the first groove 511 into the third groove 513, the lever 82 can drive the first limiting half block 811 and the second limiting half block 812 to rotate, so that the first limiting half block 811 can be completely located on one of the adjusting rods 21, and the second limiting half block 812 can be completely located on the other adjusting rod 21. This releases the first limiting half block 811 and the second limiting half block 812 from restricting the swing of the two adjacent adjusting rods 21, thereby allowing the first adjusting rod 2 and the second adjusting rod 4 to automatically switch from a rigid support state to a bent state after sliding past the connecting sleeve 5. Conversely, when the lever 82 slides from the third groove 513 into the first groove 511 via the second groove 512, the first adjusting rod 2 and the second adjusting rod 4 can switch from a bent state to a rigid support state.

[0071] Reference Figure 4 and Figure 6 To facilitate the stabilization of the first limiting half block 811 and the second limiting half block 812 after rotation, a first locking groove 8111 and a second locking groove 8112 are provided on the side wall of the first limiting half block 811, and a locking slide groove 212 is provided on the groove wall of the rotating groove 211. A locking ball 22 is slidably disposed in the locking slide groove 212, and a locking spring 23 is fixed between the locking ball 22 and the bottom of the locking slide groove 212. The locking spring 23 is used to drive the locking ball 22 to lock into the first locking groove 8111 or the second locking groove 8112.

[0072] When the locking ball 22 is engaged in the first locking slot 8111, the first limiting half block 811 is not fully positioned on one of the adjusting rods 21; when the locking ball 22 is engaged in the second locking slot 8112, the first limiting half block 811 is fully positioned on one of the adjusting rods 21.

[0073] The locking spring 23 causes the locking ball 22 to lock into the first locking groove 8111 or the second locking groove 8112, so that the first limiting half block 811 can be stable relative to the adjusting rod 21 after rotation. Without external force, the first limiting half block 811 and the second limiting half block 812 are difficult to rotate freely, making it easy to stabilize the state between the two adjacent adjusting rods 21.

[0074] Reference Figure 2 and Figure 5 In order to facilitate the re-insertion of the first adjusting rod 2 and the second adjusting rod 4 into the connecting sleeve 5 after they have been removed from the connecting sleeve 5, the connecting sleeve 5 includes a top plate 52, a bottom plate 53 and two side plates 54.

[0075] Reference Figure 1 and Figure 5 The top plate 52 is connected to the decorative cover plate 6, the bottom plate 53 is located below the top plate 52 and is directly opposite the top plate 52, and two side plates 54 are located on both sides of the top plate 52 and the bottom plate 53 respectively. Each side plate 54 is detachably connected to the top plate 52 and the bottom plate 53 by bolts.

[0076] After the first adjusting rod 2 and the second adjusting rod 4 are disengaged from the connecting sleeve 5, the connecting sleeve 5 can be disassembled into a top plate 52, a bottom plate 53 and two side plates 54 by tightening the bolts. The first adjusting rod 2 and the second adjusting rod 4 are placed between the top plate 52, the bottom plate 53 and the two side plates 54, so that the side plates 54 are reconnected to the top plate 52 and the bottom plate 53 by bolts. The parts of the first adjusting rod 2 and the second adjusting rod 4 that protrude from the connecting sleeve 5 are adjusted to be in a bent state, so that the first adjusting rod 2 and the second adjusting rod 4 can be easily reinstalled into the connecting sleeve 5 without moving the overlapping cover plate.

[0077] Reference Figure 2 To make the bending of the first adjusting rod 2 and the second adjusting rod 4 more reliable, guide plates 55 are fixed to both ends of the connecting sleeve 5 by connecting rods 56. The guide plates 55 are inclined. The guide plate 55 near the bending part of the first adjusting rod 2 is used to guide the first adjusting rod 2 to bend, and the guide plate 55 near the bending part of the second adjusting rod 4 is used to guide the second adjusting rod 4 to bend.

[0078] Under the guidance of the guide plate 55, the parts of the first adjusting rod 2 and the second adjusting rod 4 that protrude from the connecting sleeve 5 can be guided to bend, thereby improving the bending stability of the bent parts of the first adjusting rod 2 and the second adjusting rod 4.

[0079] Reference Figure 1 and Figure 5 In order to enable the decorative cover plate 6 to both connect with the connecting sleeve 5 and buffer vibration, a telescopic rod 61 is fixedly connected to the decorative cover plate 6. The movable end of the telescopic rod 61 is rotatably connected to the connecting sleeve 5. A buffer spring 62 is fixed between the movable end and the fixed end of the telescopic rod 61. The buffer spring 62 is used to drive the telescopic rod 61 to elastically return to its original position after being stretched or compressed.

[0080] Reference Figure 5 In this embodiment, the movable end of the telescopic rod 61 is a hollow structure, and the buffer spring 62 is located in the space enclosed by the fixed end and the movable end of the telescopic rod 61.

[0081] The connecting sleeve 5 can drive the decorative cover plate 6 to move via the telescopic rod 61, so that the position of the decorative cover plate 6 can be adjusted according to the movement of the overlapping cover plate relative to the pit; the buffer spring 62 can buffer the vibration of the decorative cover plate 6 during the adjustment process.

[0082] The implementation principle of the decorative expansion joint structure of the earthquake-resistant escalator in this embodiment of the invention is as follows: During use, under the restriction of the limiting block 81, the two adjacent adjusting rods 21 of the first adjusting rod 2 located between the first mounting seat 1 and the connecting sleeve 5 are difficult to swing relative to each other, and the two adjacent adjusting rods 21 of the second adjusting rod 4 located between the second mounting seat 3 and the connecting sleeve 5 are also difficult to swing relative to each other, so that the first adjusting rod 2 and the second adjusting rod 4 can rigidly support the decorative cover plate 6. Under the flexible connection of the connecting block 11, the connecting ball 12 and the elastic cover 13, and under the elastic force of the adjusting spring 7, when the overlapping cover plate moves relative to the foundation pit, the first adjusting rod 2 and the second adjusting rod 4 can adjust the position of the decorative cover plate 6 by sliding within the connecting sleeve 5.

[0083] When the first adjusting rod 2 and the second adjusting rod 4 pass through the connecting sleeve 5, the switching groove 51 drives the toggle block 82 to rotate the limiting block 81, so that the first limiting half block 811 is completely located on one of the adjusting short rods 21, and the second limiting half block 812 is also completely located on the other adjusting short rod 21. This allows the parts of the first adjusting rod 2 and the second adjusting rod 4 that pass through the connecting sleeve 5 to automatically switch to a bent state. When the overlapping cover plate is close to the foundation pit, the first adjusting rod 2 and the second adjusting rod 4 are not easily subjected to abutment force. Although the first adjusting rod 2 and the second adjusting rod 4 will be worn, the sliding of the first adjusting rod 2 and the second adjusting rod 4 relative to the connecting sleeve 5 is not likely to cause jamming. This makes the expansion joint structure less likely to be damaged by the overlapping cover plate and the foundation pit.

[0084] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A decorative expansion joint structure for an earthquake-resistant escalator, characterized in that, include: The first mounting base (1) is installed on the overlapping cover plate; The first adjusting rod (2) is flexibly connected at one end to the first mounting base (1); The second mounting base (3) is installed on the foundation pit; The second adjusting rod (4) is flexibly connected at one end to the second mounting base (3); The connecting sleeve (5) is located between the first mounting base (1) and the second mounting base (3), and the first adjusting rod (2) and the second adjusting rod (4) are slidably inserted into the connecting sleeve (5); The decorative cover plate (6) is mounted on the first mounting base (1) and the second mounting base (3) at both ends, and the middle part of the decorative cover plate (6) is connected to the connecting sleeve (5). in, Both the first adjusting rod (2) and the second adjusting rod (4) are provided with adjusting springs (7) between them and the connecting sleeve (5). The adjusting springs (7) are in a state that can be compressed or stretched. The portion of the first adjusting rod (2) located between the first mounting base (1) and the connecting sleeve (5) is in a rigid support state, and the portion of the second adjusting rod (4) located between the second mounting base (3) and the connecting sleeve (5) is in a rigid support state. The portions of the first adjusting rod (2) and the second adjusting rod (4) that protrude from the connecting sleeve (5) can be bent in a direction away from each other. The first adjusting rod (2) and the second adjusting rod (4) have the same structure. The first adjusting rod (2) is formed by hinged ends of multiple adjusting short rods (21). The hinge axis of two adjacent adjusting short rods (21) is located on the side of the first adjusting rod (2) away from the second adjusting rod (4). A limiting component (8) is provided at the hinge of each of the two adjacent adjusting short rods (21). The limiting component (8) is used to limit the swing state of the two adjacent adjusting short rods (21). When the limiting component (8) is located between the first mounting base (1) and the connecting sleeve (5), the limiting component (8) is used to limit the relative swing of the two adjacent adjusting short rods (21). When the limiting component (8) slides past the connecting sleeve (5), the limiting component (8) is used to release the swing restriction of the two adjacent adjusting short rods (21).

2. The decorative expansion joint structure of an earthquake-resistant escalator according to claim 1, characterized in that, The flexible connection structure between the first adjusting rod (2) and the first mounting base (1) is the same as the flexible connection structure between the second adjusting rod (4) and the second mounting base (3). The flexible connection structure between the first adjusting rod (2) and the first mounting base (1) includes a connecting block (11), a connecting ball (12), and an elastic cover (13). The connecting block (11) is connected to the first mounting base (1). An adjusting groove (111) is provided on the connecting block (11). One side of the connecting ball (12) is fitted and disposed in the adjusting groove (111), and the other side is connected to the first adjusting rod (2). The elastic cover (13) covers the connecting ball (12) and is connected to the connecting block (11). The elastic cover (13) is used to drive the connecting ball (12) to abut against the connecting block (11).

3. The decorative expansion joint structure of an earthquake-resistant escalator according to claim 2, characterized in that, The connecting block (11) is made of ferromagnetic material, and the connecting ball (12) is made of magnetic material. The connecting block (11) and the connecting ball (12) are magnetically connected.

4. The decorative expansion joint structure of an earthquake-resistant escalator according to claim 1, characterized in that, The limiting component (8) includes a limiting block (81). A rotating groove (211) is provided at the hinge of two adjacent adjusting rods (21). Half of the rotating groove (211) is located on one of the adjusting rods (21), and the other half is located on the other adjusting rod (21). The limiting block (81) is adapted to rotate within the rotating groove (211). The limiting block (81) includes a first limiting half block (811) and a second limiting half block (812). The first limiting half block (811) or the second limiting half block (812) can be completely located on one of the adjusting rods (21), and the first limiting half block (811) or the second limiting half block (812) can also be completely located on the other adjusting rod (21).

5. The decorative expansion joint structure of an earthquake-resistant escalator according to claim 4, characterized in that, A lever (82) is connected to the first limiting half block (811). The lever (82) is slidably disposed in a switching groove (51) opened on the inner side wall of the connecting sleeve (5). The switching groove (51) includes a first groove segment (511), a second groove segment (512), and a third groove segment (513). The first groove segment (511), the second groove segment (512), and the third groove segment (513) are arranged sequentially along the direction in which the first adjusting rod (2) passes through the connecting sleeve (5). The lever (82) can slide into the first groove segment (511). In the first slot (511), the lever (82) can slide from the first slot (511) through the second slot (512) into the third slot (513) and can slide out from the third slot (513). When the lever (82) is in the first slot (511), the first limiting half block (811) is not completely located on one of the adjusting rods (21). When the lever (82) is in the third slot (513), the first limiting half block (811) is completely located on one of the adjusting rods (21).

6. The decorative expansion joint structure of an earthquake-resistant escalator according to claim 4, characterized in that, The first limiting half block (811) has a first slot (8111) and a second slot (8112) on its side wall. The rotating groove (211) has a slotted sliding groove (212) on its groove wall. A slotted ball (22) is slidably arranged in the slotted sliding groove (212). A slotted spring (23) is arranged between the slotted ball (22) and the bottom of the slotted sliding groove (212). The slotted spring (23) is used to drive the slotted ball (22) to engage in the first slot (8111) or the second slot (8112). When the slotted ball (22) is engaged in the first slot (8111), the first limiting half block (811) is not completely located on one of the adjusting rods (21). When the slotted ball (22) is engaged in the second slot (8112), the first limiting half block (811) is completely located on one of the adjusting rods (21).

7. The decorative expansion joint structure of an earthquake-resistant escalator according to claim 1, characterized in that, The connecting sleeve (5) includes a top plate (52), a bottom plate (53) and two side plates (54). The top plate (52) is connected to the decorative cover plate (6). The bottom plate (53) is located below the top plate (52) and is directly opposite to the top plate (52). The two side plates (54) are located on both sides of the top plate (52) and the bottom plate (53) respectively. Each side plate (54) is detachably connected to the top plate (52) and the bottom plate (53).

8. The decorative expansion joint structure of an earthquake-resistant escalator according to claim 1, characterized in that, Guide plates (55) are connected to both ends of the connecting sleeve (5). The guide plates (55) are inclined. The guide plate (55) near the bent part of the first adjusting rod (2) is used to guide the first adjusting rod (2) to bend, and the guide plate (55) near the bent part of the second adjusting rod (4) is used to guide the second adjusting rod (4) to bend.

9. The decorative expansion joint structure of an earthquake-resistant escalator according to claim 1, characterized in that, The decorative cover plate (6) is connected to a telescopic rod (61). The movable end of the telescopic rod (61) is rotatably connected to the connecting sleeve (5). A buffer spring (62) is provided between the movable end and the fixed end of the telescopic rod (61). The buffer spring (62) is used to drive the telescopic rod (61) to elastically return to its original position after being stretched or compressed.

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