Pushing chain for villa elevator

Abstract

A pushing chain for a villa elevator relates to the technical field of pushing chains and comprises a pushing chain body, the pushing chain body comprises a first chain plate and a second chain plate, limiting grooves are formed in the upper portions of the front ends of the first chain plate and the second chain plate, limiting blocks are arranged on the upper portions of the rear ends of the first chain plate and the second chain plate, and the limiting grooves are used in cooperation with the limiting blocks. First protrusions extending forwards are arranged at the bottoms of the front ends of the first chain plate and the second chain plate, first connecting holes are formed in the first protrusions, second protrusions are arranged at the rear ends, where the inner sides of the lower portions of the limiting blocks are located, of the first chain plate or the second chain plate, and second connecting holes are formed in the second protrusions. The second protrusions are bent and translated towards the outer side relative to the first chain plates or the second chain plates, the translating distance is the same as the thickness of the first protrusions, and the second protrusions of the first chain plates and the second chain plates are opposite in direction relative to the first protrusions. The device is used for being installed on the side face of the villa elevator car and has the advantages of being simple in structure, small in occupied space, high in speed, large in load, low in maintenance cost, safe and reliable.

Description

Technical Field

[0001] The invention relates to the technical field of push chains, in particular to a push chain for villa ladders. Background Art

[0002] Villa elevator is a kind of elevator specially designed for use inside villas. With the rapid development of China's economy and the improvement of people's living standards, more and more families have bought villas, and villa elevators have begun to emerge in the market. Due to space limitations, villa elevators need to be adaptively designed and installed in limited space.

[0003] Elevators on the market can be divided into three categories according to the driving mode: traction elevators, screw elevators and hydraulic elevators. Traction elevators connect the car and the counterweight block at both ends of the traction rope. The traction wheel at the top rotates, driving the traction rope to move, and the car moves up and down. The traction elevator relies on the counterweight to pull the car back and forth, and the transmission efficiency is relatively high. However, traction elevators will generate a lot of noise during high-speed operation and occupy a large building space.

[0004] The screw elevator is a nut installed on the elevator car frame driven by a motor. When the motor drives the nut to rotate, the nut moves on the screw, causing the elevator car to rise or fall. The screw elevator has a high space utilization rate, but its disadvantages are slow speed and limited load capacity. Generally, it can only carry 2-3 people.

[0005] The principle of hydraulic elevators: The electric motor delivers high-pressure oil to the hydraulic cylinder through the hydraulic pump and hydraulic motor. When the oil enters the hydraulic cylinder, it squeezes the piston to rise, thereby raising the elevator car. Conversely, when the oil flows out of the hydraulic cylinder, it will cause the piston to drop, and the elevator car will drop at the same time. The hydraulic type runs smoothly and can withstand high loads, but the disadvantages are that the height is limited, the noise is loud, and the hydraulic oil and other parts need to be replaced regularly, which has high maintenance costs. Utility Model Content

[0006] The invention discloses a push chain for villa ladder, which is used to be installed on the side of the villa ladder car, and drives the car up and down through the push chain. It has the advantages of simple structure, small space occupation, high speed, large load capacity, low maintenance cost, safety and reliability.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A push chain for a villa ladder comprises a push chain body, wherein the push chain body comprises a first chain plate and a second chain plate, wherein the upper front end portions of the first chain plate and the second chain plate are provided with a limiting groove, and the upper rear end portions are provided with a limiting block, wherein the limiting groove is used in conjunction with the limiting block, wherein the bottom front end portions of the first chain plate and the second chain plate are provided with a first protrusion extending forward, wherein the first protrusion is provided with a first connecting hole, and the rear end portions of the first chain plate or the second chain plate located on the inner side below the limiting block are provided with a second protrusion, wherein the second protrusion is provided with a second connecting hole, wherein the second protrusion is bent and translated outwardly relative to the first chain plate or the second chain plate, and the translation distance is the same as the thickness of the first protrusion, and the second protrusions of the first chain plate and the second chain plate are in opposite directions with respect to the first protrusion.

[0009] Preferably, the inner wall of the limit groove is a first curved surface, the end of the limit block is a second curved surface matching the first curved surface, the first chain plate or the top of the second chain plate below the first curved surface is integrally connected with a first plane, the bottom end of the limit block is provided with a second plane matching the first plane, and the root of the second plane is provided with a tool withdrawal groove.

[0010] Preferably, the inner and outer surfaces of the second protrusion are parallel to the outer surface of the first protrusion, and the second protrusion is integrally connected to the first chain plate or the second chain plate via a bent connecting plate.

[0011] Preferably, the push chain body includes a heavy-load chain structure, which includes a chain plate assembly, a pin, a roller, and an outer roller. The chain plate assembly is composed of a first chain plate and a second chain plate that are fitted together. The first protrusions of the first chain plate and the second chain plate that are fitted together overlap each other to form a first connecting portion. The second protrusions of the first chain plate and the second chain plate that are fitted together are arranged opposite to each other. The two second protrusions form the second connecting portion of the slot structure. The first connecting portion of the chain plate assembly located at the rear side is inserted into the second connecting portion of the adjacent front chain plate assembly to form a plug-in structure. Several chain plate assemblies are connected end to end in sequence to form a chain plate mechanism. The two chain plate mechanisms are opposite to each other and are connected by a pin passing through the first connecting hole and the second connecting hole in the plug-in structure opposite to each other. The pin is located on the shaft wall between the two chain plate mechanisms and is gap-fitted with a roller. An outer roller is provided on the part of the pin located outside the plug-in structure, and the pin is gap-fitted with the first connecting hole and the second connecting hole.

[0012] Preferably, the limiting grooves, limiting blocks, first arcuate surfaces, second arcuate surfaces, first planes, second planes and backing grooves of the first chain plate and the second chain plate that fit together are aligned respectively, and when the limiting grooves of the chain plate assembly on the rear side cooperate with the limiting blocks of the chain plate assembly on the adjacent front side, the first arcuate surface and the second arcuate surface fit together, and the first plane and the second plane fit together, and the push chain body constitutes a push chain structure that can only bend to one side.

[0013] Preferably, the outer walls of the pin shaft where the two ends of the roller are located and the outer walls of the pin shaft where the two ends of the outer roller are located are respectively sleeved with gaskets; the shaft wall of the pin shaft located on the outside of the plug-in structure is provided with a mounting groove, and an elastic retaining ring is provided in the mounting groove, and the inner surface of the elastic retaining ring is against the outer surface of the gasket on the outermost side of the pin shaft.

[0014] Preferably, the push chain body also includes a light-load chain structure, which includes a relatively arranged chain plate mechanism, the chain plate mechanism is composed of a plurality of first chain plates and a second chain plate connected in sequence end to end, the first protrusion of the first chain plate or the second chain plate located on the rear side is inserted into the inner side of the second protrusion of the first chain plate adjacent to the front side to form a connecting structure, the relatively arranged chain plate mechanisms are connected by a pin shaft passing through the first connecting hole and the second connecting hole in the connecting structure, rollers are gap-fitted on the pin shafts between the relatively chain plate mechanisms, outer rollers are provided at the ends of the pin shafts located on the outside of the connecting structure, gaskets are respectively provided on the pin shafts at both ends of the roller and at both ends of the outer roller, an installation groove is provided on the shaft wall of the pin shaft located on the outside of the connecting structure, an elastic retaining ring is provided on the installation groove, the inner surface of the elastic retaining ring is abutted against the outer surface of the gasket on the outermost side of the pin shaft, and the pin shaft is gap-fitted with the first connecting hole and the second connecting hole respectively.

[0015] Preferably, in the two groups of chain plate mechanisms relative to the light-load chain structure, the first chain plate in any group of chain plate mechanisms is arranged opposite to the second chain plate in the other group of chain plate mechanisms, and the second chain plate in any group of chain plate mechanisms is arranged opposite to the first chain plate in the other group of chain plate mechanisms.

[0016] The beneficial effects of this new push chain for villa ladder:

[0017] This new type is used to be installed on the side of the villa elevator car, and drives the car up and down by pushing the chain. It has the advantages of simple structure, small space occupation, high speed, large load, low maintenance cost, safety and reliability. Specifically:

[0018] (1) When the chain of the new type is bent to one side, it is flexible and occupies little space; when it is in a straight state, the chain plates mesh with each other, making the chain rigid and able to realize the function of linear pushing. The transmission is realized by the meshing of the sprocket and the chain, with high transmission efficiency, and the linear pushing is fast, stable, safe and reliable.

[0019] (2) The new type drives the car up and down by pushing the chain, and the chain bears the weight of the car. The overall force is uniform and stable, the structure is relatively simple, and linear pushing can be achieved. The linear pushing is faster and the movement range is larger.

[0020] (3) This new type adopts a chain plate assembly to carry multiple chain plates in one chain link, which increases the load-bearing area, makes the chain load heavier, and makes the transmission more stable and reliable. The outer roller is made of wear-resistant materials such as ultra-high molecular weight polyethylene and nylon, which reduces movement noise, reduces maintenance costs, and has a longer service life.

[0021] (4) This new type provides a heavy-load chain structure and a light-load chain structure according to the different loads of the car, providing a flexible selection mode for the transmission of the villa elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments, which constitute a part of the specification and are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation to the present invention.

[0023] Figure 1 , the overall structural diagram of the new heavy-duty chain structure;

[0024] Figure 2 , a top view of the structure of the novel heavy-duty chain structure;

[0025] Figure 3 , a schematic diagram of the first chain plate structure of the present invention;

[0026] Figure 4 , a schematic diagram of the structure of the second chain plate of the present invention;

[0027] Figure 5 , a schematic diagram of the pin structure of the new type;

[0028] Figure 6 , a schematic diagram of the structure of the chain plate assembly of the present invention;

[0029] Figure 7 , a schematic diagram of the structure of the novel light-load chain structure;

[0030] 01—chain plate assembly, 011—the portion where the first chain plate and the second chain plate overlap and fit each other, 012—the second connecting portion, 1—the first chain plate, 2—the second chain plate, 3—the pin, 4—the roller, 5—the outer roller, 6—the gasket, 7—the elastic retaining ring, 1-1—the first protrusion, 1-2—the second protrusion, 1-3—the limit block, 1-4—the limit groove, 1-5—the first connecting hole, 1-6—the second connecting hole, 1-7—the second arcuate surface, 1-8—the first arcuate surface, 1-9—the second plane, 1-10—the first plane, 1-11—the backing groove, 1-12—the connecting plate, 3-1—the mounting groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The following embodiments may be understood as explaining part of the structure of the present invention individually, or may be understood as explaining a wider range of structural features of the present invention through a combination of multiple embodiments.

[0033] Example 1

[0034] A push chain for a villa elevator comprises a push chain body. The push chain body can be various push chains that can realize the push function of the villa elevator in the prior art. The difference is that:

[0035] like Figure 1-6 As shown, the push chain body includes a first chain plate 1 and a second chain plate 2, a limiting groove 1-4 is provided at the upper front end of the first chain plate 1 and the second chain plate 2, and a limiting block 1-3 is provided at the upper rear end, the limiting groove 1-4 is used in conjunction with the limiting block 1-3, a first protrusion 1-1 extending forward is provided at the bottom front end of the first chain plate 1 and the second chain plate 2, a first connecting hole 1-5 is provided on the first protrusion 1-1, and a second protrusion 1-2 is provided at the rear end of the first chain plate or the second chain plate where the inner side below the limiting block 1-3 is located, The second protrusion 1-2 is provided with a second connecting hole 1-6. The second protrusion 1-2 is bent and translated outward relative to the first chain plate 1 or the second chain plate 2, and the translation distance is the same as the thickness of the first protrusion 1-1, so as to facilitate the connection of adjacent first protrusions and second protrusions. The second protrusions 1-2 of the first chain plate 1 and the second chain plate 2 are opposite in direction with respect to the first protrusion 1-1, that is, the second protrusions of the first chain plate 1 and the second chain plate 2 are respectively located on the left and right sides of the first protrusion, so that the first chain plate and the second chain plate can form a chain plate assembly when they are fitted together, such as Figure 6 shown.

[0036] In this embodiment, the chain plate structure of the prior art push chain is replaced by the first chain plate and the second chain plate, which can not only realize the function of the push chain, but also optimize the connection structure between the chain plates and improve the overall strength of the push chain to meet the load-bearing requirements of the villa car.

[0037] Example 2

[0038] like Figure 3 , 4As shown, the inner wall of the limit groove 1-4 is a first arc surface 1-8, the end of the limit block 1-3 is a second arc surface 1-7 matching the first arc surface 1-8, the top of the first chain plate 1 or the second chain plate 2 below the first arc surface 1-8 is integrally connected with a first plane 1-10, the bottom of the limit block 1-3 is provided with a second plane 1-9 matching the first plane 1-10, and the root of the second plane 1-9 is provided with a back-cut groove 1-11. The back-cut groove 1-11 can prevent deformation and tearing caused by bending of the limit block, ensure the close fit between the first plane and the second plane, and thus ensure the rigidity of the push chain.

[0039] like Figure 3 , 4 As shown, the inner and outer surfaces of the second protrusion 1-2 are parallel to the outer surface of the first protrusion 1-1, and the second protrusion 1-2 is integrally connected to the first chain plate 1 or the second chain plate 2 through a bent connecting plate 1-12.

[0040] Example 3

[0041] like Figure 1 , 2 As shown in , 6, the push chain body includes a heavy-duty chain structure, and the heavy-duty chain structure includes a chain plate assembly 01, a pin 3, a roller 4, and an outer roller 5. The chain plate assembly 01 is composed of a first chain plate 1 and a second chain plate 2 that are fitted together. The first protrusions 1-1 of the first chain plate 1 and the second chain plate 2 that are fitted together overlap with each other to form a first connecting portion. The second protrusions 1-2 of the first chain plate 1 and the second chain plate 2 that are fitted together are arranged opposite to each other, and the two second protrusions 1-2 form a second connecting portion 012 of a slot structure. The chain plate assembly located at the rear side The first connecting part of 01 is inserted into the second connecting part 012 of the adjacent front chain plate assembly 01 to form a plug-in structure. Several chain plate assemblies 01 are connected end to end in sequence to form a chain plate mechanism. The two chain plate mechanisms are opposite to each other and are connected by a pin 3 passing through the first connecting hole 1-5 and the second connecting hole 1-6 in the plug-in structure opposite to each other. The pin 3 is located on the shaft wall between the two chain plate mechanisms and is gap-fitted with a roller 4. An outer roller 5 is provided on the part of the pin 3 located outside the plug-in structure. The pin is gap-fitted with the first connecting hole and the second connecting hole.

[0042] In this embodiment, the first chain plate and the second chain plate are attached to each other to form a chain plate assembly 01, which can significantly improve the load capacity of the push chain body. On the other hand, the first chain plate and the second chain plate after attachment form a first connecting portion and a second connecting portion, and the first connecting portion can be just inserted into the slot structure of the second connecting portion. The second connecting portion limits the first connecting portion, which can improve the compactness of the push chain structure and make the overall strength of the push chain higher.

[0043] Example 4

[0044] like Figure 6 As shown, the limiting grooves 1-4, limiting blocks 1-3, first arcuate surfaces 1-8, second arcuate surfaces 1-7, first planes 1-10, second planes 1-9 and tool retraction grooves 1-11 of the mutually fitted first and second chain plates 1 and 2 are aligned respectively, when the limiting grooves of the chain plate assembly 01 on the rear side cooperate with the limiting blocks of the chain plate assembly 01 on the adjacent front side, the first arcuate surfaces and the second arcuate surfaces fit together (to transmit thrust), the first plane and the second plane fit together (to limit the chain to have unidirectional rigidity), and the push chain body constitutes a push chain structure that can only bend to one side.

[0045] Example 5

[0046] like Figure 2 As shown, the outer wall of the pin where the two ends of the roller 4 are located and the outer wall of the pin where the two ends of the outer roller 5 are located are respectively sleeved with gaskets 6; the shaft wall of the pin 3 located outside the plug-in structure is provided with a mounting groove 3-1, and an elastic retaining ring 7 is provided in the mounting groove, and the inner surface of the elastic retaining ring 7 is against the outer surface of the gasket 6 at the outermost side of the pin. The axial displacement of the outer roller along the pin is limited by the elastic retaining ring.

[0047] Example 6

[0048] like Figure 7 As shown, the push chain body also includes a light-load chain structure, which includes a relatively arranged chain plate mechanism, and the chain plate mechanism is composed of a plurality of first chain plates 1 and second chain plates 2 connected in sequence end to end, and the first protrusion 1-1 of the first chain plate 1 or the second chain plate 2 located on the rear side is inserted into the inner side of the second protrusion 1-2 of the second chain plate 2 or the first chain plate 1 adjacent to the front side to form a connecting structure, and the relatively arranged chain plate mechanisms are connected by a pin shaft 3 passing through the first connecting hole 1-5 and the second connecting hole 1-6 in the connecting structure, and a roller 4 is gap-fitted on the pin shaft 3 between the relatively chain plate mechanisms, and an outer roller 5 is provided at the end of the pin shaft 3 located outside the connecting structure, and gaskets 6 are respectively provided on the pin shaft 3 at both ends of the roller 4 and the outer roller 5, and an installation groove 3-1 is provided on the shaft wall of the pin shaft 3 located outside the connecting structure, and an elastic retaining ring 7 is provided on the installation groove, and the elastic retaining ring 7 is located between the gasket 6 on the inner side of the outer roller 5 and the connecting structure, and the pin shaft is gap-fitted with the first connecting hole and the second connecting hole respectively.

[0049] Example 7

[0050] like Figure 7As shown, in the two sets of chain plate mechanisms relative to the light-load chain structure, the first chain plate in any set of chain plate mechanisms is arranged opposite to the second chain plate in the other set of chain plate mechanisms, and the second chain plate in any set of chain plate mechanisms is arranged opposite to the first chain plate in the other set of chain plate mechanisms.

[0051] Example 8

[0052] like Figure 1 , 2 As shown, the outer roller 5 is used to roll between the guide rails to provide guidance for the chain. The outer roller 5 is made of ultra-high molecular weight polyethylene and nylon, which has the advantages of being quiet and wear-resistant. The roller 4 transmits power by meshing with the teeth of the sprocket to drive the push chain body to move up and down.

Claims

1. A push chain for a villa ladder, comprising a push chain body, characterized by: The push chain body includes a first chain plate and a second chain plate, a limiting groove is provided on the upper front end portion of the first chain plate and the second chain plate, and a limiting block is provided on the upper rear end portion, the limiting groove is used in conjunction with the limiting block, a first protrusion extending forward is provided at the bottom front end of the first chain plate and the second chain plate, a first connecting hole is provided on the first protrusion, a second protrusion is provided at the rear end of the first chain plate or the second chain plate located on the inner side below the limiting block, the second protrusion is provided with a second connecting hole, the second protrusion is bent and translated outwardly relative to the first chain plate or the second chain plate, and the translation distance is the same as the thickness of the first protrusion, and the second protrusions of the first chain plate and the second chain plate are opposite in direction to the first protrusion.

2. A push chain for villa ladder as claimed in claim 1, characterized in that: The inner wall of the limit groove is a first arcuate surface, the end of the limit block is a second arcuate surface matching the first arcuate surface, the first chain plate or the top of the second chain plate below the first arcuate surface is integrally connected with a first plane, the bottom end of the limit block is provided with a second plane matching the first plane, and the root of the second plane is provided with a tool withdrawal groove.

3. A push chain for villa ladder as claimed in claim 2, characterized in that: The inner and outer surfaces of the second protrusion are parallel to the outer surface of the first protrusion, and the second protrusion is integrally connected to the first chain plate or the second chain plate via a bent connecting plate.

4. A push chain for a villa ladder as claimed in claim 3, characterized in that: The push chain body includes a heavy-load chain structure, which includes a chain plate assembly, a pin, a roller, and an outer roller. The chain plate assembly is composed of a first chain plate and a second chain plate that are fitted together. The first protrusions of the first chain plate and the second chain plate that are fitted together overlap each other to form a first connecting portion. The second protrusions of the first chain plate and the second chain plate that are fitted together are arranged opposite to each other. Two second protrusions form the second connecting portion of the slot structure. The first connecting portion of the chain plate assembly located at the rear side is inserted into the second connecting portion of the adjacent front chain plate assembly to form a plug-in structure. Several chain plate assemblies are connected end to end in sequence to form a chain plate mechanism. The two chain plate mechanisms are opposite to each other and are connected by a pin that passes through the first connecting hole and the second connecting hole in the plug-in structure opposite to each other. The pin is located on the shaft wall between the two chain plate mechanisms and is gap-fitted with a roller. An outer roller is provided on the part of the pin located outside the plug-in structure, and the pin is gap-fitted with the first connecting hole and the second connecting hole.

5. A push chain for villa ladder as claimed in claim 4, characterized in that: The limiting grooves, limiting blocks, first arcuate surfaces, second arcuate surfaces, first planes, second planes and backing grooves of the mutually fitting first chain plates and second chain plates are aligned respectively. When the limiting grooves of the chain plate assembly on the rear side cooperate with the limiting blocks of the chain plate assembly on the adjacent front side, the first arcuate surfaces and the second arcuate surfaces are fitted together, and the first planes and the second planes are fitted together. The push chain body constitutes a push chain structure that can only bend to one side.

6. A push chain for villa ladder as claimed in claim 5, characterized in that: The outer walls of the pin shaft where the two ends of the roller are located and the outer walls of the pin shaft where the two ends of the outer roller are located are respectively sleeved with gaskets; the shaft wall of the pin shaft located outside the plug-in structure is provided with a mounting groove, and an elastic retaining ring is provided in the mounting groove, and the inner surface of the elastic retaining ring is against the outer surface of the gasket on the outermost side of the pin shaft.

7. A push chain for villa ladder as claimed in claim 6, characterized in that: The push chain body also includes a light-load chain structure, which includes a relatively arranged chain plate mechanism, the chain plate mechanism is composed of a plurality of first chain plates and a second chain plate connected in sequence end to end, the first protrusion of the first chain plate or the second chain plate located on the rear side is inserted into the inner side of the second protrusion of the first chain plate adjacent to the front side to form a connecting structure, the relatively arranged chain plate mechanisms are connected by a pin shaft passing through the first connecting hole and the second connecting hole in the connecting structure, rollers are gap-fitted on the pin shafts between the relatively chain plate mechanisms, outer rollers are provided at the ends of the pin shafts located on the outside of the connecting structure, gaskets are respectively provided on the pin shafts at both ends of the roller and at both ends of the outer roller, an installation groove is provided on the shaft wall of the pin shaft located on the outside of the connecting structure, an elastic retaining ring is provided on the installation groove, the inner surface of the elastic retaining ring is abutted against the outer surface of the gasket on the outermost side of the pin shaft, and the pin shaft is gap-fitted with the first connecting hole and the second connecting hole respectively.

8. A push chain for a villa ladder as claimed in claim 7, characterized in that: In the two sets of chain plate mechanisms relative to the light-load chain structure, the first chain plate in any set of chain plate mechanisms is arranged opposite to the second chain plate in the other set of chain plate mechanisms, and the second chain plate in any set of chain plate mechanisms is arranged opposite to the first chain plate in the other set of chain plate mechanisms.

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