Compensation chain guide device for large cargo elevator

Abstract

The utility model discloses a compensating chain guide device for a large cargo elevator, comprising a ground-mounted guide and an even number of wall-mounted guides; the ground-mounted guide comprises a side plate, one side of the side plate is provided with a plurality of first guide shafts, the plurality of first guide shafts form a semicircular guiding curved surface, the outer side of the guiding curved surface is provided with a plurality of magnetic elements; the wall-mounted guide comprises a mounting seat, a mounting plate is rotatably connected to the mounting seat, two second guide shafts are provided on one side of the mounting plate, a channel of a compensating chain is formed between the two second guide shafts, a motor is provided on the mounting plate, a first adjusting mechanism and a second adjusting mechanism are provided at the output end of the motor, the first angle adjusting mechanism is used to change the inclination angle of the mounting plate, and the second adjusting mechanism is used to change the axis angle of the two second guide shafts. The utility model has the advantages of good anti-sway effect, can increase the service life of the compensating chain, low cost and convenient control.

Description

Technical Field

[0001] The utility model belongs to the field of elevator accessories, in particular to a compensating chain guide device of a large-load freight elevator. Background Art

[0002] The elevator car is pulled by a traction rope, which passes over the traction wheel of the traction machine. One end of the traction rope is connected to the top of the car, and the other end is connected to the top of the counterweight mechanism. During the lifting process of the car, there will be a big difference between the length of the traction rope on the car side and the length of the traction rope on the counterweight mechanism side, resulting in poor balancing of the car. For this reason, a compensation chain needs to be set. The compensation chain generally has an inner core of an iron chain or steel cable and a rubber layer on the outside. One end of the compensation chain is connected to the bottom of the car, and the other end is connected to the bottom of the counterweight mechanism.

[0003] At present, elevators in the market are developing towards large tonnage, and the number of 8T and 10T projects is gradually increasing. As a result, the size of the car is getting bigger and bigger, and the traction ropes used are getting thicker and thicker. The corresponding compensation chain does not need to be thicker and thicker. The compensation chain will shake during the movement of the car and may collide with other components in the hoistway, which will not only cause noise and vibration, but also may cause damage to components. Therefore, it is necessary to set a guide mechanism on the compensation chain to reduce the shaking of the compensation chain.

[0004] Existing large-load freight elevator compensating chain guide devices, such as the elevator compensating chain guide device of application number 201610276605.2, are arranged at the bottom of the shaft, and two guide shafts are used to prevent the compensating chain from shaking. However, they have the following defects: first, in high-rise buildings, the length of the compensating chain is very long, and the compensating chain can only be tightened by changing the horizontal distance between the two guide shafts. The tightening force is very low, and the effect of preventing the compensating chain from shaking is relatively poor; second, only the turning part at the bottom of the compensating chain can be guided, and there are few action points. It does not play a guiding role for the compensating chain at a higher position, and the compensating chain is still prone to shaking.

[0005] Therefore, the existing large cargo elevator compensating chain guide device has the defect of poor ability to prevent the compensating chain from shaking. Utility Model Content

[0006] The purpose of the utility model is to provide a compensating chain guide device for a large cargo elevator. The utility model has the advantages of good anti-swaying effect, being able to increase the service life of the compensating chain, low cost and being easy to control.

[0007] The technical solution of the utility model: a compensating chain guide device for a large cargo elevator comprises a ground-mounted guide and an even number of wall-mounted guides;

[0008] The ground-mounted guide comprises a semicircular side plate, the opening of the side plate is upward, a plurality of first guide shafts are arranged on one side of the side plate, an annular first arc groove is arranged on the outer circumference of the first guide shaft, the plurality of first guide shafts form a semicircular guide curved surface, a plurality of magnetic elements are arranged on the outer side of the guide curved surface and are fixed to the side plate, and the magnetic ends of the plurality of magnetic elements are respectively directed to the plurality of first guide shafts;

[0009] The wall-mounted guide includes a mounting base, which is rotatably connected to a horizontal mounting plate. Two second guide shafts arranged side by side are provided on one side of the mounting plate. An annular second arc groove is provided on the outer circumference of the second guide shaft. A channel of a compensation chain is formed between the two second guide shafts. A motor is provided on the mounting plate. A first adjustment mechanism and a second adjustment mechanism are provided at the output end of the motor. The first angle adjustment mechanism is used to change the inclination angle of the mounting plate, and the second adjustment mechanism is used to change the axial angle of the two second guide shafts.

[0010] In the aforementioned large cargo elevator compensation chain guide device, there are two side plates, the first guide shaft is rotatably connected between the two side plates, and the magnetic element is fixed between the two side plates.

[0011] In the aforementioned large cargo elevator compensation chain guide device, a bottom plate is provided below the side plate, the bottom plate is fixed to the side plate, a plurality of fixed plates are provided below the bottom plate, a plurality of tension springs are provided between the fixed plate and the bottom plate, and a guide column passing through the bottom plate is provided on the fixed plate.

[0012] In the aforementioned large cargo elevator compensation chain guide device, the second adjusting mechanism includes a first gear, which is connected to the output end of the motor. Both sides of the first gear are provided with sliding bars connected to the mounting plate, and the sliding bar is provided with a rack meshing with the first gear. One end of the sliding bar is hinged with a swing arm, and a long hole is provided on the swing arm. The long direction of the long hole is parallel to the long direction of the swing arm, and a pin connected to the mounting plate is provided in the long hole. The swing arm is provided with a rotating shaft connected to the corresponding second guide shaft.

[0013] In the aforementioned large cargo elevator compensation chain guide device, the first adjusting mechanism includes a second gear rotatably connected to one of the slide bars, a wheel disc is provided on the axial side of the second gear, an annular guide groove is provided on the outer peripheral surface of the wheel disc, a coil spring is provided in the guide groove, and the outer end of the coil spring is connected to the mounting seat through a rope.

[0014] In the aforementioned large cargo elevator compensating chain guide device, the pin is located at the end of the long hole close to the mounting seat.

[0015] In the aforementioned large cargo elevator compensation chain guide device, the distance between the first gear and the second gear is equal to the length of the rack, and one end of the rack is meshed with the first gear.

[0016] In the aforementioned large cargo elevator compensating chain guide device, a limiting rod of the mounting plate is provided on the mounting seat.

[0017] In the aforementioned large cargo elevator compensating chain guide device, the mounting seat is provided with a through hole, and a rope ring for connecting the rope is passed through the through hole.

[0018] In the aforementioned large cargo elevator compensating chain guide device, the magnetic element is an electromagnet, the magnetic element and the motor are connected to the elevator control cabinet, the floor-mounted guide is fixed to the floor of the hoistway, the wall-mounted guide is fixed to the wall of the hoistway, and the compensating chain passes through the channel of the wall-mounted guide and bypasses the guide curved surface;

[0019] When the car is raised or lowered, the control cabinet energizes the magnetic element to generate magnetic attraction, and the control cabinet moves the mounting plate and the second guide shaft to the horizontal side of the car lifting route or the horizontal side of the counterweight mechanism lifting route.

[0020] Compared with the prior art, the utility model consists of a ground-mounted guide and an even number of wall-mounted guides. The ground-mounted guide is used to guide the turning part at the bottom of the compensation chain, and the wall-mounted guide is used to guide the vertical part of the compensation chain. There are many points of action, so that the compensation chain is not easy to shake, and the anti-sway effect is good.

[0021] In the ground-mounted guide, the magnetic force of the magnetic element is used to apply downward tension to the compensation chain, and the tension spring is used to press the first guide shaft downward to apply downward tension to the compensation chain, so that the compensation chain obtains a relatively large tension force, further improving the anti-sway effect. The large number of first guide shafts effectively reduces the contact pressure between a single first guide shaft and the compensation chain. On the basis of ensuring the required total tension, since the magnetic element shares a part of the tension component, the tension component required to be generated by pressing the first guide shaft downward can be reduced, thereby further reducing the contact pressure between a single first guide shaft and the compensation chain, effectively avoiding wear of the rubber layer on the surface of the compensation chain and increasing the service life of the compensation chain.

[0022] In the wall-mounted guide, through structural optimization, the two second guide shafts can be opened and closed, that is, rotated around the mounting seat. When closed, the two second guide shafts are respectively located on both sides of the compensation chain, which can effectively prevent the compensation chain from shaking. When opened, the two second guide shafts can be rotated to avoid the car or counterweight mechanism moving up and down, ensuring the normal operation of the elevator. In addition, the above structure is realized by only one motor, which not only reduces the cost but also facilitates control.

[0023] In summary, the utility model has the advantages of good anti-sway effect, being able to increase the service life of the compensation chain, being low in cost and being easy to control. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view of the ground-mounted guide.

[0025] Figure 2 yes Figure 1 Schematic diagram at AA.

[0026] Figure 3 is a top view of the wall-mount guide.

[0027] Figure 4 is a front view of the wall mount guide.

[0028] Figure 5 yes Figure 3 Schematic diagram at BB.

[0029] The markings in the accompanying drawings are: 1-ground mounted guide, 100-side plate, 101-first guide shaft, 102-first arc surface groove, 103-magnetic element, 104-bottom plate, 105-fixed plate, 106-tension spring, 107-guide column; 2-wall mounted guide, 200-mounting seat, 201-mounting plate, 202-second guide shaft, 203-second arc surface groove, 204-channel, 205-motor, 206-first gear, 207-slide bar, 208-rack, 209-swing arm, 210-long hole, 211-pin, 212-rotating shaft, 213-second gear, 214-wheel, 215-guide groove, 216-coil spring, 217-rope, 218-limit rod, 219-rope ring; 3-compensation chain. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0031] Embodiment: A compensating chain guide device for a large cargo elevator comprises a ground-mounted guide 1 and an even number of wall-mounted guides 2 .

[0032] like Figure 1 and Figure 2 As shown, the ground-mounted guide 1 includes two semicircular side panels 100, the openings of the side panels 100 face upward, a plurality of first guide shafts 101 are arranged between the two side panels 100, the material of the first guide shaft 101 is nylon, the first guide shaft 101 is connected to the side panel 100 bearings, an annular first arc groove 102 is arranged on the outer peripheral surface of the first guide shaft 101, the plurality of first guide shafts 101 constitute a semicircular guide curved surface, a plurality of magnetic elements 103 are arranged on the outer side of the guide curved surface and are fixed to the side panels 100, the magnetic element 103 is fixed between the two side panels 100, the magnetic element 103 is an electromagnet, the magnetic ends of the plurality of magnetic elements 103 respectively point to the plurality of first guide shafts 101, and the plurality of magnetic elements 103 are connected in parallel.

[0033] A bottom plate 104 is provided below the side plate 100 , and the bottom plate 104 is fixed to the side plate 100 . A plurality of fixing plates 105 are provided below the bottom plate 104 . A plurality of tension springs 106 are provided between the fixing plates 105 and the bottom plate 104 . A guide column 107 passing through the bottom plate 104 is provided on the fixing plate 105 .

[0034] Method of using the floor-mounted guide 1: fix the floor-mounted guide 1 on the shaft floor through the fixing plate 105, and connect the magnetic element 103 to the control cabinet of the elevator. The turning part of the compensation chain 3 bypasses the guide curved surface formed by multiple first guide shafts 101. The tension spring 106 pulls the bottom plate 104, the side plate 100 and the first guide shaft 101 downward in sequence, giving the compensation chain 3 a downward tension, so that the compensation chain 3 is tightened and the shaking of the compensation chain 3 is reduced. When the control cabinet starts the lift of the car, the control cabinet energizes the magnetic element 103, and the magnetic element 103 attracts the compensation chain 3, reducing the contact force between the compensation chain 3 and the first guide shaft 101, delaying the wear of the rubber layer on the surface of the compensation chain 3, and increasing the service life of the compensation chain.

[0035] like Figure 3 and Figure 4 As shown, the wall-mounted guide 2 includes a U-shaped mounting base 200, on which a horizontal mounting plate 201 is rotatably connected, one side of the mounting plate 201 is provided with two second guide shafts 202 arranged side by side, an annular second arc groove 203 is provided on the outer peripheral surface of the second guide shaft 202, a compensation chain channel 204 is formed between the two second guide shafts 202, a motor 205 is provided on the mounting plate 201, and a first adjustment mechanism and a second adjustment mechanism are provided at the output end of the motor 205, the first angle adjustment mechanism is used to change the inclination angle of the mounting plate 201, and the second adjustment mechanism is used to change the axial angle of the two second guide shafts 202.

[0036] The second adjustment mechanism includes a first gear 206, which is connected to the output end of the motor 205. Slide bars 207 are provided on both sides of the first gear 206. The slide bar 207 is connected to the mounting plate 201 through a slide rail slider. A rack 208 meshing with the first gear 206 is provided on the slide bar 207. A swing arm 209 is hinged at one end of the slide bar 207. A long hole 210 is provided on the swing arm 209. The long direction of the long hole 210 is parallel to the long direction of the swing arm 209. A pin 211 connected to the mounting plate 201 is provided in the long hole 210. A rotating shaft 212 is provided on the swing arm 209, and the rotating shaft 212 is connected to the corresponding second guide shaft 202 bearing.

[0037] The first adjustment mechanism includes a second gear 213 rotatably connected to one of the slide bars 207 , a wheel disc 214 is provided on the axial side of the second gear 213 , an annular guide groove 215 is provided on the outer circumference of the wheel disc 214 , a coil spring 216 is provided in the guide groove 215 , and the outer end of the coil spring 216 is connected to the mounting seat 200 via a rope 217 .

[0038] The pin 211 is located at the end of the long hole 210 close to the mounting seat 200 .

[0039] The distance between the first gear 206 and the second gear 213 is equal to the length of the rack 208 , and one end of the rack 208 is meshed with the first gear 206 .

[0040] The mounting seat 200 is provided with a limiting rod 218 of the mounting plate 201 .

[0041] The mounting seat 200 is provided with a through hole, and a rope ring 219 for connecting the rope 217 is passed through the through hole. The rope ring 219 is used to make the connection point between the rope 217 and the mounting seat 200 movable and rotate smoothly.

[0042] How to use the wall-mounted guide 2: Half of the wall-mounted guides 2 are used to guide the compensation chain 3 on the car side, and the other half of the wall-mounted guides 2 are used to guide the compensation chain 3 on the counterweight mechanism side. Whether it is the wall-mounted guide 2 on the car side or the counterweight mechanism side, one is installed every two to three floors. The wall-mounted guide 2 is fixed to the wall of the hoistway through the mounting base 200. The compensation chain 3 passes through the channel 204 of the wall-mounted guide 2, and the two second guide shafts 202 limit the swing of the compensation chain in the horizontal direction. The motor 205 is connected to the control cabinet.

[0043] Input the installation height of the corresponding wall-mounted guide 2 into the control cabinet. The control method of the wall-mounted guide 2 on the car side is basically the same as that of the wall-mounted guide 2 on the counterweight mechanism side. Therefore, taking the control of the wall-mounted guide 2 on the counterweight mechanism side as an example, during the lifting and lowering process of the counterweight mechanism, when the distance between the counterweight mechanism and the wall-mounted guide 2 is far, the wall-mounted guide 2 is in Figure 3 The state suppresses the horizontal shaking of the compensation chain 3. Since the car sends a signal to the control cabinet when passing through the floor door, the control cabinet knows the real-time height and running direction of the car, and the height of the car matches the height of the counterweight mechanism, so that the control cabinet also knows the height and running direction of the counterweight mechanism in real time. When the counterweight mechanism moves close to the wall-mounted guide 2 for a certain distance, the control cabinet makes the motor 205 rotate forward, such as Figure 3As shown, in the initial state, since the end of the rack 208 is in contact with the first gear 206, the rack 208 will not be driven when the rack 208 rotates clockwise, and when the motor 205 causes the first gear 206 to rotate counterclockwise, the first gear 206 drives the corresponding slide bar 207 to move through the corresponding rack 208, wherein the left slide bar 207 moves downward, and the right slide bar 207 moves upward, and the slide bar 207 pulls the swing arm 209 to rotate, and the swing arm 209 drives the second guide shaft 202 to rotate through the rotating shaft 212, and the two second guide shafts 202 are opened, so that the compensation chain 3 can move horizontally from the channel 204. The first gear 206 continues to rotate counterclockwise, and the rack 208 does not move, so that the two second guide shafts 202 remain in an open state, and the first gear 206 is meshed with the second gear 213, driving the second gear 213 to rotate, and the second gear 213 drives the wheel 214 to rotate, and the wheel 214 tightens the coil spring 216. The coil spring 216 obtains a reaction force on the mounting seat 200 through the rope 217, so that the mounting plate 201 rotates upward, so that the wall-mounted guide 2 as a whole is not on the moving route of the counterweight mechanism to avoid interference. When the counterweight mechanism moves and exceeds the wall-mounted guide 2 by a certain distance, the motor rotates the first gear 206 clockwise, the left slide bar 207 moves upward, and the right slide bar 207 moves downward. At the moment when the first gear 206 is separated from the second gear 213, under the action of gravity, the mounting plate 201 rotates downward, so that the two second guide shafts return to the two sides of the compensation chain. During the rotation process, the preload force of the coil spring 216 provides a buffering effect to reduce working vibration and noise. After the slide bar 207 moves to the limit position, the two second guide shafts 202 are closed again to be parallel to each other, and the compensation chain is guided and limited. By controlling the stiffness and length of the coil spring 216, or by controlling the speed of the motor 205, it is necessary to rotate the mounting plate 201 to a horizontal state, and then close the two second guide shafts 202 to be parallel to each other.

[0044] In the description of the embodiments, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation.

Claims

1. The compensating chain guide device for large cargo elevators is characterized by: It comprises a ground-mounted guide (1) and an even number of wall-mounted guides (2); The floor-mounted guide (1) comprises a semicircular side plate (100), the opening of the side plate (100) is upward, a plurality of first guide shafts (101) are provided on one side of the side plate (100), an annular first arc surface groove (102) is provided on the outer peripheral surface of the first guide shaft (101), the plurality of first guide shafts (101) form a semicircular guide curved surface, a plurality of magnetic elements (103) are provided on the outer side of the guide curved surface and are all fixed to the side plate (100), and the magnetic ends of the plurality of magnetic elements (103) are respectively directed to the plurality of first guide shafts (101); The wall-mounted guide (2) comprises a mounting seat (200), a horizontal mounting plate (201) being rotatably connected to the mounting seat (200), two second guide shafts (202) arranged side by side being provided on one side of the mounting plate (201), an annular second arc surface groove (203) being provided on the outer peripheral surface of the second guide shaft (202), a channel (204) of a compensation chain being formed between the two second guide shafts (202), a motor (205) being provided on the mounting plate (201), a first adjustment mechanism and a second adjustment mechanism being provided at the output end of the motor (205), the first angle adjustment mechanism being used to change the inclination angle of the mounting plate (201), and the second adjustment mechanism being used to change the axis angle of the two second guide shafts (202).

2. The compensating chain guide device for a large cargo elevator according to claim 1 is characterized in that: There are two side plates (100), the first guide shaft (101) is rotatably connected between the two side plates (100), and the magnetic element (103) is fixed between the two side plates (100).

3. The compensating chain guide device for a large cargo elevator according to claim 2 is characterized in that: A bottom plate (104) is provided below the side plate (100), the bottom plate (104) is fixed to the side plate (100), a plurality of fixing plates (105) are provided below the bottom plate (104), a plurality of tension springs (106) are provided between the fixing plates (105) and the bottom plate (104), and a guide column (107) passing through the bottom plate (104) is provided on the fixing plate (105).

4. The compensating chain guide device for a large cargo elevator according to claim 1 is characterized in that: The second adjustment mechanism comprises a first gear (206), the first gear (206) is connected to the output end of the motor (205), a slide bar (207) connected to the mounting plate (201) is provided on both sides of the first gear (206), a rack (208) meshing with the first gear (206) is provided on the slide bar (207), a swing arm (209) is hinged at one end of the slide bar (207), a long hole (210) is provided on the swing arm (209), the long direction of the long hole (210) is parallel to the long direction of the swing arm (209), a pin (211) connected to the mounting plate (201) is provided in the long hole (210), and a rotating shaft (212) connected to the corresponding second guide shaft (202) is provided on the swing arm (209).

5. The compensating chain guide device for a large cargo elevator according to claim 4 is characterized in that: The first adjustment mechanism comprises a second gear (213) rotatably connected to one of the slide bars (207); a wheel disc (214) is provided on the axial side of the second gear (213); an annular guide groove (215) is provided on the outer peripheral surface of the wheel disc (214); a coil spring (216) is provided in the guide groove (215); and the outer end of the coil spring (216) is connected to the mounting seat (200) via a rope (217).

6. The compensating chain guide device for a large cargo elevator according to claim 5 is characterized in that: The pin (211) is located at the end of the long hole (210) close to the mounting seat (200).

7. The compensating chain guide device for a large cargo elevator according to claim 5 is characterized in that: The distance between the first gear (206) and the second gear (213) is equal to the length of the rack (208), and one end of the rack (208) is meshed with the first gear (206).

8. The compensating chain guide device for a large cargo elevator according to claim 5 is characterized in that: The mounting seat (200) is provided with a limiting rod (218) of the mounting plate (201), and the limiting rod (218) and the mounting seat (200).

9. The compensating chain guide device for a large cargo elevator according to claim 5 is characterized in that: The mounting seat (200) is provided with a through hole, and a rope ring (219) for connecting a rope (217) is passed through the through hole.

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