An elevator counterweight balance device with a noise reduction structure

Abstract

The present invention discloses an elevator counterweight balance device with a noise reduction structure, which relates to the technical field of elevator counterweight devices. It includes symmetrically distributed guide rails. An installation frame is arranged between the symmetrically distributed guide rails. Symmetrically distributed connecting frames are fixedly connected to the upper side of the installation frame. The installation frame is detachably connected with symmetrically distributed connecting blocks in a linear array. A chute is arranged on one side of the connecting block. A friction block is slidably connected in a limited way in the chute of the connecting block. The friction block is in frictional cooperation with the adjacent guide rail. In the present invention, the linear array of friction blocks are in contact with the adjacent guide rails in turn, so that the frictional force between the guide rail and the connecting block increases step by step, slowing down the descending speed of the installation frame and other parts connected thereto, reducing the instantaneous impact when the installation frame and other parts connected thereto contact other structures, and avoiding damage to the installation frame and other parts connected thereto as well as other structures due to impact.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator counterweight devices, and particularly to an elevator counterweight balance device with a noise reduction structure. Background Art

[0002] The elevator counterweight device is an important part of the elevator traction system. It is mainly used to balance the weight of the elevator car, thereby reducing the power required by the elevator motor, improving the efficiency and stability of the elevator operation at the same time. The elevator counterweight device is connected to the elevator car through a traction wheel and is driven by a winch to move up and down along the guide rail through the traction rope, thereby driving the counterweight device to move up and down along the guide rail. During the normal use of the elevator, if the traction rope of the counterweight device breaks due to excessive wear or other reasons, the counterweight device will lose traction and fall rapidly. At present, only a protective structure is provided at the bottom of the elevator shaft in the elevator counterweight device. However, if the position of the counterweight device is too high at this time, when the counterweight device falls and contacts the protective structure, a large impact will be caused to the protective structure, and this impact acts on the counterweight device in the reverse direction, causing the counterweight device to be damaged and deformed, affecting the subsequent use of the counterweight device. Summary of the Invention

[0003] In order to overcome the disadvantages of the existing elevator counterweight device during rapid falling, the present invention provides an elevator counterweight balance device with a noise reduction structure.

[0004] The technical solution is as follows: An elevator counterweight balance device with a noise reduction structure includes symmetrically distributed guide rails. An installation frame is arranged between the symmetrically distributed guide rails. Symmetrically distributed connecting frames are fixedly connected to the upper side of the installation frame. A connecting plate is slidably connected to the symmetrically distributed connecting frames together. An elastic member is fixedly connected between the connecting plate and the installation frame. A traction wheel is rotatably connected to the upper side of the connecting plate through a connecting seat. The installation frame is detachably connected with symmetrically distributed connecting blocks in a linear array. The connecting blocks are slidably connected to the adjacent guide rails. A counterweight block is jointly arranged on the symmetrically distributed connecting blocks. A chute is arranged on one side of the connecting block. A friction block is slidably connected in a limited way in the chute of the connecting block. The friction block is in frictional cooperation with the adjacent guide rail, and an elastic member is fixedly connected between the friction block and the adjacent connecting block. The installation frame is detachably connected with a fixing plate. The fixing plate is in extrusion cooperation with the adjacent symmetrically distributed connecting blocks and the counterweight block between them. The connecting block is provided with sound-absorbing sponge, and symmetrically distributed silent pulleys are respectively in extrusion cooperation with the adjacent guide rails.

[0005] As a further preferred solution, an inclined surface is provided on one side of the friction block away from the adjacent counterweight block. The distance between the inclined surface on the friction block and the fixed plate decreases as the distance between the friction block and the adjacent counterweight block increases, and the height difference between the two sides of the inclined surface on the same friction block is half of the height of the friction block.

[0006] As a further preferred solution, the distance between the opposite sides of the symmetrically distributed connecting blocks and the adjacent guide rails is less than the height of the adjacent friction blocks, and the connecting part of the friction block and the adjacent elastic member is made of a rigid material, and the rest is made of an elastically deformable material.

[0007] As a further preferred solution, a first liquid storage shell is fixedly connected to each of the symmetrically distributed connecting frames. A piston rod penetrating through the adjacent connecting frame is slidably connected inside the first liquid storage shell. An elastic member is fixedly connected between the piston rod and the adjacent first liquid storage shell. The first liquid storage shell is fixedly connected and communicated with a connecting pipe. The connecting pipe on the first liquid storage shell penetrates through the mounting frame and the fixed plate and is communicated with the chute of the adjacent connecting block.

[0008] As a further preferred solution, a pressing plate that is in pressing fit with the adjacent friction block is slidably connected in the chute of the connecting block. An elastic member is fixedly connected between the pressing plate and the adjacent connecting block. A pressing rod is slidably connected in the chute of the connecting block. The pressing rod is slidably matched with the adjacent connecting block. The pressing plate is in pressing fit with the adjacent pressing rod. Except for the connecting block communicated with the adjacent first liquid storage shell, the other connecting blocks are all provided with limiting grooves communicated with their upper chutes. A limiting pin is rotatably connected in the limiting groove of the connecting block. The limiting pin is in limiting fit with the adjacent friction block. A torsion spring is fixedly connected between the limiting pin and the adjacent connecting block. The limiting pin is in pressing fit with the adjacent pressing rod.

[0009] As a further preferred solution, the elastic coefficient of the elastic member between the piston rod and the adjacent first liquid storage shell is greater than the elastic coefficient of the elastic member between the adjacent friction block and the adjacent connecting block, so as to enable the piston rod and the adjacent friction block to move synchronously and smoothly.

[0010] As a further preferred solution, it further includes symmetrically distributed fixing frames. The symmetrically distributed fixing frames are fixedly connected to the lower side of the mounting frame. An intercepting block is rotatably connected to the fixing frame. A torsion spring is fixedly connected between the intercepting block and the adjacent fixing frame. The intercepting block is in pressing fit with the adjacent pressing rod. The guide rail is provided with a linear array of positioning grooves. Symmetrically distributed elastic telescopic rods are fixedly connected to the lower side of the mounting frame. The telescopic end of the elastic telescopic rod is in limiting fit with the adjacent intercepting block. The linear array of positioning grooves are all in limiting fit with the telescopic end of the adjacent elastic telescopic rod.

[0011] As a further preferred solution, the height of the positioning groove is greater than the minimum value of the diameters of the telescopic ends of the adjacent elastic telescopic rods and the heights of the adjacent friction blocks, and less than the maximum value of the heights of the adjacent friction blocks.

[0012] As a further preferred solution, it further includes a second liquid storage shell, the second liquid storage shell is fixedly connected to the lower sides of the symmetrically distributed guide rails through a connecting member, a moving block is slidably connected inside the second liquid storage shell, a moving rod is fixedly connected to one side of the moving block close to the mounting frame, the moving rod is slidably connected to the second liquid storage shell, buffer columns evenly distributed circumferentially are fixedly connected inside the second liquid storage shell, the moving block is provided with through holes evenly distributed circumferentially, and the buffer columns evenly distributed circumferentially are respectively used for reducing the flow area between adjacent through holes on the moving block. One end of the moving rod away from the moving block is fixedly connected with a load-bearing plate, an elastic member is arranged between the load-bearing plate and the second liquid storage shell, the load-bearing plate is in extrusion fit with the mounting frame, and the symmetrically distributed guide rails are both slidably connected to the load-bearing plate.

[0013] As a further preferred solution, the buffer columns evenly distributed circumferentially are all frustum-shaped, and the diameters of the buffer columns gradually decrease from bottom to top, and at the same time, the heights of the buffer columns evenly distributed circumferentially are not the same.

[0014] The present invention has the following advantages: By the friction blocks in a linear array contacting the adjacent guide rails in turn, the friction force between the guide rails and the connecting blocks increases step by step, slowing down the descending speed of the mounting frame and other parts connected thereto, reducing the instantaneous impact when the mounting frame and other parts connected thereto contact other structures, and avoiding damage to the mounting frame and other parts connected thereto as well as other structures due to impact; at the same time, the noise generated during the movement of the connecting block is absorbed by the sound-absorbing sponge arranged on the connecting block, that is, the noise generated during the movement of the mounting frame and other parts connected thereto is reduced.

[0015] When the friction block contacts the adjacent guide rail, the friction block deforms under the extrusion force of the adjacent connecting block and the adjacent guide rail, so that the friction block is inserted between the adjacent connecting block and the adjacent guide rail, further increasing the friction force between the guide rail and the adjacent connecting block, and further slowing down the falling speed of the mounting frame and other parts connected thereto.

[0016] Through the cooperation between the telescopic end of the elastic telescopic rod and the adjacent positioning groove, when the friction block cannot effectively decelerate the fixing frame, the mounting frame and other parts connected thereto are intercepted and locked, so that the mounting frame and other parts connected thereto cannot move downward any more, and the mounting frame and other parts connected thereto are fixed on the two guide rails, ensuring the integrity of the mounting frame and other parts connected thereto. Brief Description of the Drawings

[0017] Figure 1 is a three - dimensional structure schematic diagram of the present invention;

[0018] Figure 2 is a three - dimensional structure schematic diagram of the connecting frame and the connecting plate of the present invention;

[0019] Figure 3 is a three - dimensional structure schematic diagram of the first liquid storage shell and the piston rod of the present invention;

[0020] Figure 4 is a three - dimensional structure schematic diagram of the connecting block and the friction block of the present invention;

[0021] Figure 5 is a three - dimensional structure schematic diagram of the extrusion rod and the limit pin of the present invention;

[0022] Figure 6 is a three - dimensional structure schematic diagram of the positioning groove and the elastic telescopic rod of the present invention;

[0023] Figure 7 is a three - dimensional structure schematic diagram of the fixing frame and the intercepting block of the present invention;

[0024] Figure 8 is a three - dimensional sectional view of the second liquid storage shell of the present invention.

[0025] Wherein: 1 - guide rail, 2 - mounting frame, 3 - connecting frame, 4 - connecting plate, 5 - traction wheel, 6 - connecting block, 7 - friction block, 8 - fixing plate, 9 - first liquid storage shell, 10 - piston rod, 11 - extrusion plate, 12 - extrusion rod, 13 - limit pin, 131 - fixing frame, 14 - intercepting block, 15 - positioning groove, 16 - elastic telescopic rod, 17 - second liquid storage shell, 18 - moving block, 19 - moving rod, 20 - buffer column, 21 - load - bearing plate. Detailed Embodiments

[0026] The following further illustrates the technical solution with specific embodiments. It should be noted that: The words indicating directions such as up, down, left, and right in this article are only for the positions of the shown structures in the corresponding drawings. The serial numbers assigned to the components in this article, such as the first, the second, etc., are only used to distinguish the described objects and do not have any sequential or technical meanings.

[0027] Embodiment 1: Considering the problem that the existing counterweight device of an elevator will fall downward as a whole when the traction rope breaks, resulting in a relatively large impact force when the counterweight device contacts the protection device, which easily causes the counterweight device and the gas structure in the elevator shaft to be damaged and deformed by the impact, the present invention proposes:

[0028] An elevator counterweight balance device with a noise - reduction structure, as Figures 1 - 5As shown in the figure, it includes two sets of guide rails 1 symmetrically distributed left and right. A hoist (an existing device not shown in the figure) for winding a hoisting rope is commonly provided above the two sets of guide rails 1. Each set of guide rails 1 consists of several arranged in a vertical straight array, and adjacent two guide rails 1 are connected by a connecting piece. The specific number of the guide rails 1 can be specifically determined by the staff according to the height of the floor. An installation frame 2 is commonly provided between the two sets of guide rails 1. Two connecting frames 3 symmetrically distributed left and right are fixedly connected to the upper side of the installation frame 2. A connecting plate 4 is slidably connected to the two connecting frames 3 together. An elastic member is fixedly connected between the connecting plate 4 and the installation frame 2. The elastic member is a tension spring, which is used to drive the connecting plate 4 to reset to the initial position, and the elastic member is in a stretched state at the initial position. A traction wheel 5 is rotatably connected to the upper side of the connecting plate 4 through a connecting seat. The hoisting rope on the hoist bypasses the traction wheel 5. The installation frame 2 is detachably connected with several connecting blocks 6 arranged in a vertical straight array and symmetrically distributed left and right (the specific number of the connecting blocks 6 can also be specifically selected by the staff). Two connecting blocks 6 in the same plane are set as a group, which are successively the first group, the second group... until the last group from top to bottom. The connecting blocks 6 are slidably connected to the adjacent guide rails 1. A counterweight is provided between each group of connecting blocks 6. A chute is provided on the opposite side of each group of connecting blocks 6. A friction block 7 is slidably connected in a limited way in the chute of the connecting block 6. Two friction blocks 7 in the same plane are set as a group, which are successively the first group, the second group... until the last group from top to bottom. The friction block 7 is in frictional cooperation with the adjacent guide rail 1. The distance between the opposite sides of the symmetrically distributed connecting blocks 6 and the adjacent guide rail 1 is less than the height of the adjacent friction block 7, but greater than half of the height of the adjacent friction block 7. And the connecting part of the friction block 7 and the adjacent elastic member is made of a rigid material, and the rest is made of an elastic deformable material. When the friction block 7 extends out and contacts the adjacent guide rail 1, the friction block 7 is deformed by the extrusion of the guide rail 1 and the adjacent connecting block 6, and then is inserted between the adjacent guide rail 1 and the adjacent connecting block 6, increasing the resistance of the connecting block 6 to move downward. And an elastic member is fixedly connected between the friction block 7 and the adjacent connecting block 6. The elastic member is a spring, which is used to drive the friction block 7 to move away from the adjacent counterweight, and the elastic member is in a compressed state at the initial position. The installation frame 2 is detachably connected with a fixing plate 8. An inclined surface is provided on the side of the friction block 7 away from the adjacent counterweight. The distance between the inclined surface on the friction block 7 and the fixing plate 8 decreases as the distance between the friction block 7 and the adjacent counterweight increases. And the height difference between both sides of the inclined surface on the same friction block 7 is half of the height of the friction block 7. The volume of each group of friction blocks 7 located between the adjacent guide rail 1 and the adjacent connecting block 6 increases synchronously as the distance between each group of friction blocks 7 increases, so that when each group of friction blocks 7 contacts the adjacent guide rail 1 respectively, each group of friction blocks 7 can be more smoothly inserted between the adjacent guide rail 1 and the adjacent connecting block 6. The fixing plate 8 is in extrusion fit with the first group of connecting blocks 6 and the counterweight between them. The fixing plate 8 extrudes the first group of connecting blocks 6 and the counterweight between them.Furthermore, the remaining groups of connecting blocks 6 and the remaining counterweights are squeezed to fix the connecting blocks 6 and the counterweights of the linear array. On the upper side of the fixing plate 8, two guide wheels symmetrically distributed left and right are rotatably connected by connecting pieces, which are used to guide the up and down movement of the mounting bracket 2 and other parts connected thereto. The connecting blocks 6 arranged in a vertical linear array and symmetrically distributed left and right are all provided with sound-absorbing sponges to reduce the noise generated during the movement of the connecting blocks 6.,

[0029] Such as Figures 1 - 5As shown, two connecting frames 3 are fixedly connected with first liquid storage shells 9 respectively. The first liquid storage shells 9 are filled with hydraulic oil. Inside the two first liquid storage shells 9, piston rods 10 passing through the adjacent connecting frames 3 are slidably connected. An elastic member is fixedly connected between the piston rods 10 and the adjacent first liquid storage shells 9. This elastic member is a tension spring, which is used to drive the adjacent piston rods 10 to move downward. And at the initial position, this elastic member is in a stretched state. The first liquid storage shell 9 is fixedly connected and communicated with a connecting pipe. The connection between the first liquid storage shell 9 and the adjacent connecting pipe is located below the adjacent piston rod 10. The connecting pipe on the first liquid storage shell 9 passes through the mounting frame 2 and the fixing plate 8 and is communicated with the chute of the adjacent connecting block 6. The connection between the chute of the uppermost connecting block 6 and the adjacent connecting pipe is located between it and the adjacent friction block 7, so that the first group of friction blocks 7 are respectively moved by the extrusion of the hydraulic oil. The elastic coefficient of the elastic member between the piston rod 10 and the adjacent first liquid storage shell 9 is greater than the elastic coefficient of the elastic member between the adjacent friction block 7 and the adjacent connecting block 6, which is used to make the piston rod 10 and the adjacent friction block 7 move synchronously and smoothly. In the chute of the connecting block 6, an extrusion plate 11 that is extrusion-fitted with the adjacent friction block 7 is slidably connected. Among them, two extrusion plates 11 in the same plane are set as a group, which are the first group, the second group... until the last group from top to bottom. An inclined surface is provided on the upper side of each group of extrusion plates 11, and the distance between the inclined surface of each group of extrusion plates 11 and the fixing plate 8 decreases as the distance between the two increases. An elastic member is fixedly connected between the extrusion plate 11 and the adjacent connecting block 6. This elastic member is a spring, which is used to maintain the position where the extrusion plate 11 contacts the adjacent friction block 7. In the chute of the connecting block 6, an extrusion rod 12 is slidably connected. The extrusion rod 12 is in an inverted L shape. The extrusion rod 12 is located below the adjacent extrusion plate 11. The extrusion plate 11 is extrusion-fitted with the horizontal part of the adjacent extrusion rod 12. The vertical part of the extrusion rod 12 is slidably fitted with the lower adjacent connecting block 6. Except for the first group of connecting blocks 6, the remaining connecting blocks 6 are all provided with limiting grooves communicated with their upper chutes. In the limiting grooves of the connecting blocks 6, limiting pins 13 are rotatably connected. The limiting pins 13 are in limiting cooperation with the adjacent friction blocks 7, which is used to maintain the initial position of the friction blocks 7. A torsion spring is fixedly connected between the limiting pins 13 and the adjacent connecting blocks 6. The limiting pins 13 are extrusion-fitted with the extrusion rods 12 on the upper adjacent connecting blocks 6. During the downward movement of the extrusion rods 12, the adjacent limiting pins 13 are extruded, so that the limiting pins 13 rotate, and at the same time, the torsion springs between the limiting pins 13 and the adjacent connecting blocks 6 are twisted and stored with force. There is a frictional force between the connecting block 6 and the adjacent friction block 7, and the frictional force between the two is less than the elastic force of the elastic member between the two. After the first group of friction blocks 7 move to the limit position, the second group of friction blocks 7 move respectively under the action of the adjacent springs.

[0030] During the normal operation of the elevator, the hoist drives the traction wheel 5 to move up and down through the traction rope. The traction wheel 5 drives the connecting plate 4 and other parts connected thereto to move up and down synchronously. At this time, the two tension springs between the connecting plate 4 and the mounting bracket 2 are in a stretched state. When the elevator is stationary, the traction rope provides an upward pulling force on the traction wheel 5. At the same time, due to the gravity of the mounting bracket 2 and other parts connected thereto, there is always a distance between the mounting bracket 2 and the connecting plate 4, thereby making the two tension springs between the connecting plate 4 and the mounting bracket 2 in a stretched state.

[0031] If the traction rope breaks during the operation of the elevator, the traction wheel 5 loses the upward pulling force, which causes the connecting plate 4 and other parts connected thereto to lose the upward pulling force synchronously. As a result, the connecting plate 4 and other parts connected thereto fall downward synchronously under the action of their own gravity. During the falling process, the tension springs between the connecting plate 4 and the mounting bracket 2 first return from the stretched state to the contracted state, which causes the connecting plate 4 to drive the traction wheel 5 to move downward relative to the mounting bracket 2 along the two connecting brackets 3. At the same time, during the downward movement of the connecting plate 4, the extrusion force of the connecting plate 4 on the two piston rods 10 gradually decreases, causing the two piston rods 10 to move downward together with the connecting plate 4 under the action of the adjacent tension springs, and at the same time, the hydraulic oil in the adjacent first liquid storage shell 9 is squeezed through the adjacent connecting pipes into the sliding grooves of the adjacent connecting blocks 6, that is, into the sliding grooves of the first group of connecting blocks 6.

[0032] During the process of the hydraulic oil flowing into the sliding grooves of the first set of connecting blocks 6, the first set of friction blocks 7 are respectively pushed by the extrusion force and move away from each other. During the movement of the friction blocks 7, the extrusion force of the friction blocks 7 on the adjacent springs decreases synchronously, so that the springs between the friction blocks 7 and the adjacent connecting blocks 6 can gradually return to the relaxed state. Until the opposite sides of the first set of friction blocks 7 respectively contact the adjacent guide rails 1, the first set of friction blocks 7 respectively increase the friction force between the adjacent connecting blocks 6 and the adjacent guide rails 1, thereby reducing the descending speed of the mounting bracket 2 and other parts connected thereto. At the same time, when the first set of friction blocks 7 contact the guide rails 1, due to the large friction force between the guide rails 1 and the adjacent friction blocks 7, and the falling speed of the mounting bracket 2 and other parts connected thereto is relatively fast, a speed difference is generated between the first set of friction blocks 7 and the mounting bracket 2 synchronously. As a result, the opposite sides of the first set of friction blocks 7 are respectively pulled upward relative to the mounting bracket 2 by the adjacent guide rails 1, that is, the two guide rails 1 respectively pull out the uppermost adjacent friction blocks 7 by means of friction. At the same time, the first set of friction blocks 7 are respectively deformed by the combined extrusion of the adjacent guide rails 1 and the adjacent connecting blocks 6, thereby increasing the friction force between the guide rails 1 and the adjacent connecting blocks 6 and reducing the descending speed of the mounting bracket 2 and other parts connected thereto. At the same time, during the descent of the mounting bracket 2 and other parts connected thereto, the sound-absorbing sponge provided on the connecting block 6 absorbs the noise generated by the connecting block 6 during the movement, that is, reduces the noise generated by the mounting bracket 2 and other parts connected thereto during the movement.

[0033] During the process of pulling out the first set of friction blocks 7, the first set of friction blocks 7 are subjected to the downward extrusion force of the adjacent connecting blocks 6, causing the opposite sides of the first set of friction blocks 7 to bend upward synchronously, so that the opposite sides of the first set of friction blocks 7 are inserted between the adjacent connecting blocks 6 and the guide rails 1, further increasing the friction force between the guide rails 1 and the adjacent connecting blocks 6, and further slowing down the falling speed of the mounting bracket 2 and other parts connected thereto. Until the first set of friction blocks 7 all move to the limit position, the two piston rods 10 move downward to the limit position synchronously, and the tension springs on the piston rods 10 return to the contracted state, and the springs on the first set of friction blocks 7 return to the relaxed state.

[0034] During the backward movement of the first set of friction blocks 7, the first set of friction blocks 7 respectively press against the inclined surfaces on the adjacent pressing plates 11, causing the pressing plates 11 to move downward under the extrusion force, compressing and storing energy in the springs between them and the adjacent connecting blocks 6. At the same time, the first set of pressing plates 11 respectively press against the adjacent pressing rods 12, causing the adjacent pressing rods 12 to move downward synchronously. During the downward movement of the pressing rods 12, the upper first limit pin 13 is pressed, causing the upper first limit pin 13 to rotate (from top to bottom). At the same time, during the rotation of the limit pin 13, the torsion spring between it and the adjacent connecting block 6 is twisted and stores energy. Until the first set of friction blocks 7 all move to the extreme positions, the first set of pressing plates 11 and the first set of pressing rods 12 both move downward to the extreme positions. At this time, the first set of limit pins 13 all rotate from the horizontal state to the vertical state.

[0035] When the first set of limit pins 13 rotate to the vertical state, the first set of limit pins 13 lose contact with the adjacent friction blocks 7 respectively, causing the second set of friction blocks 7 to move backward under the action of the adjacent springs respectively. The movement process of the second set of friction blocks 7 can refer to the movement process of the first set of friction blocks 7 above and will not be described in detail. When the opposite sides of the second set of friction blocks 7 respectively contact the adjacent guide rails 1, the second set of friction blocks 7 further increase the friction force between the mounting bracket 2 and the other parts connected thereto and the two guide rails 1, that is, further slow down the falling speed of the mounting bracket 2. At the same time, the movement processes of the remaining groups of friction blocks 7 can all refer to the movement process of the first set of friction blocks 7 above. The groups of friction blocks 7 cooperate with each other to gradually increase the friction force between the guide rails 1 and the connecting blocks 6, that is, gradually slow down the descending speed of the mounting bracket 2 and the other parts connected thereto, thereby reducing the instantaneous impact when the mounting bracket 2 and the other parts connected thereto contact other structures, and avoiding damage to the mounting bracket 2 and the other parts connected thereto as well as other structures due to impact.

[0036] After the device stops falling, the staff repairs and trims the device for subsequent continued use.

[0037] In this embodiment, the two lowermost connecting blocks 6 are not provided with parts such as pressing plates 11, pressing rods 12, and limit pins 13, and are normally provided in subsequent embodiments and are the last set.

[0038] Embodiment 2: On the basis of Embodiment 1, as Figure 3 、 Figure 6 and Figure 7As shown in the figure, it further includes two fixing brackets 131 that are symmetrically distributed left and right. Both of the two fixing brackets 131 are fixedly connected to the lower side of the mounting bracket 2. The fixing bracket 131 is rotatably connected with an intercepting block 14. A torsion spring is fixedly connected between the intercepting block 14 and the adjacent fixing bracket 131. The two intercepting blocks 14 are respectively in extrusion fit with the adjacent extrusion rods 12 in the last group. When the two extrusion rods 12 in the last group move downward, they respectively extrude the adjacent intercepting blocks 14, causing the intercepting blocks 14 to rotate and twisting and storing energy in the torsion spring between the intercepting blocks 14 and the adjacent fixing brackets 131. The guide rail 1 is provided with a linear array of positioning grooves 15. The lower side of the mounting bracket 2 is fixedly connected with two elastic telescopic rods 16 that are symmetrically distributed left and right. At the initial position, the telescopic end of the elastic telescopic rod 16 is located within its fixed part, that is, the elastic telescopic rod 16 is in a state of storing energy at the initial position. The telescopic end of the elastic telescopic rod 16 is in limit fit with the adjacent intercepting block 14. The linear array of positioning grooves 15 are all in limit fit with the telescopic ends of the adjacent elastic telescopic rods 16. The height of the positioning groove 15 is greater than the diameter of the telescopic end of the adjacent elastic telescopic rod 16. The telescopic end of the elastic telescopic rod 16 can extend into the adjacent positioning groove, thereby limiting and fixing the mounting bracket 2. The height of the positioning groove 15 is greater than the minimum value of the height of the adjacent friction block 7 and less than the maximum value of the height of the adjacent friction block 7. When the friction block 7 moves, it can be inserted into the adjacent positioning groove 15 on the adjacent guide rail 1. The friction block 7 and the adjacent positioning groove 15 cooperate with each other to buffer the falling speed of the mounting bracket 2 and other parts connected thereto.

[0039] When gradually decelerating the mounting bracket 2 and other parts connected thereto as described above, if after all the friction blocks 7 are in contact with the guide rail 1, the falling speed of the mounting bracket 2 and other parts connected thereto still cannot be effectively slowed down, the extrusion rods 12 in the last group (the lowermost group) respectively extrude the adjacent intercepting blocks 14 during the downward movement (the movement process of the extrusion rods 12 in the last group will not be described in detail, and the specific process can refer to the movement process of the extrusion rods 12 in the first group), causing the two intercepting blocks 14 to gradually rotate under the extrusion force. At the same time, during the rotation of the intercepting blocks 14, the torsion spring between the intercepting blocks 14 and the adjacent fixing brackets 131 is twisted and stores energy.

[0040] When the lowermost set of extrusion rods 12 move downward to the limit position, the two intercepting blocks 14 rotate synchronously to the vertical state. At this time, the two intercepting blocks 14 lose contact with the telescopic ends of the adjacent elastic telescopic rods 16 respectively, and then the telescopic ends of the two elastic telescopic rods 16 move away from each other. Until the telescopic ends of the two elastic telescopic rods 16 contact the adjacent guide rails 1 respectively, the telescopic ends of the two elastic telescopic rods 16 stop moving synchronously. At the same time, during the process of the mounting frame 2 driving the other parts connected thereto to move downward, the contact positions between the telescopic ends of the two elastic telescopic rods 16 and the adjacent guide rails 1 also change accordingly. Until the telescopic ends of the two elastic telescopic rods 16 move to the positions matching the adjacent positioning grooves 15 respectively, the telescopic ends of the two elastic telescopic rods 16 are respectively inserted into the adjacent positioning grooves 15. The telescopic ends of the two elastic telescopic rods 16 cooperate with each other to intercept and lock the mounting frame 2 and the other parts connected thereto, so that the mounting frame 2 and the other parts connected thereto can no longer move downward, and the mounting frame 2 and the other parts connected thereto are fixed at a certain position on the two guide rails 1.

[0041] When the friction block 7 contacts the adjacent guide rail 1, the side of the friction block 7 away from the adjacent counterweight can briefly enter the adjacent positioning groove 15, thereby buffering the falling speed of the mounting frame 2 and the other parts connected thereto. After the device is successfully intercepted by the telescopic ends of the elastic telescopic rods 16, the staff repairs the device and then puts the device into use again.

[0042] Embodiment 3: On the basis of Embodiment 2, as Figure 1 and Figure 8As shown in the figure, it further includes a second liquid storage shell 17. The inside of the second liquid storage shell 17 is filled with hydraulic oil. The second liquid storage shell 17 is fixedly connected to the lower side of the two groups of guide rails 1 through a connecting piece. A moving block 18 is slidably connected inside the second liquid storage shell 17. A moving rod 19 is fixedly connected to the upper side of the moving block 18. The moving rod 19 is slidably connected to the second liquid storage shell 17. Buffer columns 20 are fixedly connected inside the second liquid storage shell 17 and are circumferentially and evenly distributed. The moving block 18 is provided with through holes that are circumferentially and evenly distributed. The specific number of through holes on the moving block 18 is the same as the specific number of buffer columns 20. The circumferentially and evenly distributed buffer columns 20 are all frustum-shaped, and the diameter of the buffer column 20 gradually decreases from bottom to top. The circumferentially and evenly distributed buffer columns 20 are respectively used to reduce the flow area of adjacent through holes on the moving block 18. When the buffer column 20 is inserted into an adjacent through hole on the moving block 18, the flow area of this through hole is changed, increasing the resistance of the moving block 18 to move downward. At the same time, the heights of the circumferentially and evenly distributed buffer columns 20 are not the same, so that during the downward movement of the moving block 18, the resistance received by the moving block 18 gradually increases. The circumferentially and evenly distributed buffer columns 20 are successively the first, the second... until the last one from high to low. The upper end of the moving rod 19 is fixedly connected to a bearing plate 21. An elastic member is provided between the bearing plate 21 and the second liquid storage shell 17. This elastic member is a spring, which is used to maintain the initial position of the bearing plate 21 and at the same time is used to reduce the downward movement speed of the bearing plate 21. The bearing plate 21 is in extrusion fit with the mounting frame 2, and both guide rails 1 are slidably connected to the bearing plate 21. The bearing plate 21 moves downward along the two guide rails 1 under the extrusion force of the mounting frame 2 and compresses and stores energy in the adjacent springs. Then, the bearing plate 21 drives the moving rod 19 and the moving block 18 to move downward synchronously.

[0043] When the telescopic ends of the above two elastic telescopic rods 16 are respectively inserted into adjacent positioning grooves 15, if the impact force generated by the downward fall of the mounting frame 2 and other parts connected thereto on the telescopic ends of the two elastic telescopic rods 16 is too large, resulting in deformation or even fracture of the telescopic ends of the elastic telescopic rods 16, when the mounting frame 2 moves downward to contact the bearing plate 21, the mounting frame 2 drives the bearing plate 21 to move downward synchronously. The bearing plate 21 drives the moving block 18 to move downward synchronously through the transmission of the moving rod 19, so that the hydraulic oil in the second liquid storage shell 17 flows through the through holes on the moving block 18. At the same time, the hydraulic oil in the second liquid storage shell 17 cannot flow quickly due to the influence of the diameter of the through holes on the moving block 18. During the downward movement of the bearing plate 21, the spring between it and the second liquid storage shell 17 is compressed and stores energy. The spring between the second liquid storage shell 17 and the bearing plate 21 and the restriction of the flow rate of the hydraulic oil in the second liquid storage shell 17 by the moving block 18 jointly buffer the mounting frame 2 and other parts connected thereto, so as to slow down the downward fall speed of the mounting frame 2 and other parts connected thereto.

[0044] During the downward movement of the above-mentioned moving block 18, when the moving block 18 moves downward to a position where it cooperates with the first buffer post 20, the first buffer post 20 is inserted into the adjacent through hole on the moving block 18, reducing the flow area of the adjacent through hole on the moving block 18, thereby increasing the resistance to the downward movement of the moving block 18. When the moving block 18 moves downward to a position where it cooperates with the second buffer post 20, the first buffer post 20 is inserted into the adjacent through hole on the moving block 18, increasing the resistance to the downward movement of the moving block 18 again, that is, increasing the resistance to the downward movement of the mounting frame 2 and other parts connected thereto, and slowing down the downward movement speed of the mounting frame 2 and other parts connected thereto again. The working processes of the remaining buffer posts 20 will not be described in detail, and the above can be referred to. The mutual cooperation between the circumferentially uniformly distributed buffer posts 20 and the through holes on the moving block 18 jointly buffers the impact force generated by the downward fall of the mounting frame 2 and other parts connected thereto, avoiding a large impact force generated after the mounting frame 2 and other parts connected thereto fall to the position where they contact the bearing plate 21, resulting in damage to the device.

[0045] Until the device stops falling downward, the staff will repair the device. After repairing the device, the staff will fix the broken traction rope to the traction wheel 5 again, and synchronously move the mounting frame 2 and other parts connected thereto upward to the working position through the winch. During the upward movement of the mounting frame 2, the extrusion force of the mounting frame 2 on the bearing plate 21 gradually decreases, thereby gradually reducing the extrusion force of the bearing plate 21 on the spring below it, and causing the bearing plate 21 to drive the moving rod 19 and the moving block 18 to slowly reset upward to the initial position under the action of the spring below it.

[0046] The technical principle of the embodiments of the present invention has been described above in combination with specific embodiments. These descriptions are only for explaining the principle of the embodiments of the present invention and cannot be interpreted in any way as a limitation on the protection scope of the embodiments of the present invention. Based on the explanations herein, those skilled in the art can think of other specific implementation manners of the embodiments of the present invention without creative labor, and these manners will fall within the protection scope of the embodiments of the present invention.

Claims

1. An elevator counterweight balance device with a noise reduction structure, comprising symmetrically distributed guide rails (1), and an installation frame (2) is arranged between the symmetrically distributed guide rails (1), characterized in that: It further includes symmetrically distributed connecting frames (3). The symmetrically distributed connecting frames (3) are fixedly connected to the upper side of the mounting frame (2). The symmetrically distributed connecting frames (3) are jointly and slidably connected with a connecting plate (4). An elastic member is fixedly connected between the connecting plate (4) and the mounting frame (2). A traction wheel (5) is rotatably connected to the upper side of the connecting plate (4) through a connecting seat. The mounting frame (2) is detachably connected with connecting blocks (6) arranged in a linear array and symmetrically distributed. The connecting blocks (6) are slidably connected with the adjacent guide rails (1). A counterweight is jointly arranged on the symmetrically distributed connecting blocks (6). A chute is arranged on one side of the connecting block (6). A friction block (7) is slidably and limit-connected in the chute of the connecting block (6). The friction block (7) is in frictional cooperation with the adjacent guide rail (1), and an elastic member is fixedly connected between the friction block (7) and the adjacent connecting block (6). The mounting frame (2) is detachably connected with a fixing plate (8). The fixing plate (8) is in extrusion cooperation with the adjacent and symmetrically distributed connecting blocks (6) and the counterweight therebetween. The connecting block (6) is provided with sound-absorbing sponge. Symmetrically distributed silent pulleys are respectively in extrusion cooperation with the adjacent guide rails (1); The distance between the opposite sides of the symmetrically distributed connecting blocks (6) and the adjacent guide rails (1) is less than the height of the adjacent friction blocks (7), and the connecting part of the friction block (7) and the adjacent elastic member is made of rigid material, and the rest is made of elastic deformable material; The symmetrically distributed connecting frames (3) are both fixedly connected with a first liquid storage shell (9). A piston rod (10) passing through the adjacent connecting frame (3) is slidably connected inside the first liquid storage shell (9). An elastic member is fixedly connected between the piston rod (10) and the adjacent first liquid storage shell (9). The first liquid storage shell (9) is fixedly connected and communicated with a connecting pipe. The connecting pipe on the first liquid storage shell (9) passes through the mounting frame (2) and the fixing plate (8) and is communicated with the chute of the adjacent connecting block (6); An extrusion plate (11) that is in extrusion cooperation with the adjacent friction block (7) is slidably connected in the chute of the connecting block (6). An elastic member is fixedly connected between the extrusion plate (11) and the adjacent connecting block (6). An extrusion rod (12) is slidably connected in the chute of the connecting block (6). The extrusion rod (12) is slidably matched with the adjacent connecting block (6). The extrusion plate (11) is in extrusion cooperation with the adjacent extrusion rod (12). Except for the connecting block (6) communicated with the adjacent first liquid storage shell (9), the rest of the connecting blocks (6) are provided with limit grooves communicated with their upper chutes. A limit pin (13) is rotatably connected in the limit groove of the connecting block (6). The limit pin (13) is in limit cooperation with the adjacent friction block (7). A torsion spring is fixedly connected between the limit pin (13) and the adjacent connecting block (6). The limit pin (13) is in extrusion cooperation with the adjacent extrusion rod (12); The elastic coefficient of the elastic member between the piston rod (10) and the adjacent first liquid storage shell (9) is greater than the elastic coefficient of the elastic member between the adjacent friction block (7) and the adjacent connecting block (6), which is used to make the piston rod (10) and the adjacent friction block (7) move synchronously and smoothly.

2. The counterweight balancing device of an elevator with a noise reduction structure according to claim 1, wherein: One side of the friction block (7) away from the adjacent counterweight is provided with an inclined surface. The distance between the inclined surface on the friction block (7) and the fixing plate (8) decreases as the distance between the friction block (7) and the adjacent counterweight increases, and the height difference between both sides of the inclined surface on the same friction block (7) is one half of the height of the friction block (7).

3. The counterweight balance device of an elevator with a noise reduction structure according to claim 1, characterized in that: It further includes symmetrically distributed fixing frames (131). The symmetrically distributed fixing frames (131) are fixedly connected to the lower side of the mounting frame (2). The fixing frames (131) are rotatably connected with blocking blocks (14). A torsion spring is fixedly connected between the blocking blocks (14) and the adjacent fixing frames (131). The blocking blocks (14) are in extrusion fit with the adjacent extrusion rods (12). The guide rail (1) is provided with linearly arranged positioning grooves (15). Symmetrically distributed elastic telescopic rods (16) are fixedly connected to the lower side of the mounting frame (2). The telescopic ends of the elastic telescopic rods (16) are in limit fit with the adjacent blocking blocks (14). The linearly arranged positioning grooves (15) are all in limit fit with the telescopic ends of the adjacent elastic telescopic rods (16).

4. The elevator counterweight balance device with a noise reduction structure according to claim 3, characterized in that: The height of the positioning groove (15) is greater than the minimum value of the diameter of the telescopic end of the adjacent elastic telescopic rod (16) and the height of the adjacent friction block (7), and less than the maximum value of the height of the adjacent friction block (7).

5. The counterweight balance device of an elevator with a noise reduction structure according to claim 3, characterized in that: It further includes a second liquid storage shell (17). The second liquid storage shell (17) is fixedly connected to the lower side of the symmetrically distributed guide rails (1) through a connecting member. A moving block (18) is slidably connected inside the second liquid storage shell (17). A moving rod (19) is fixedly connected to one side of the moving block (18) close to the mounting frame (2). The moving rod (19) is slidably connected with the second liquid storage shell (17). Circumferentially and uniformly distributed buffer columns (20) are fixedly connected inside the second liquid storage shell (17). The moving block (18) is provided with circumferentially and uniformly distributed through holes. The circumferentially and uniformly distributed buffer columns (20) are respectively used to reduce the flow area of the adjacent through holes on the moving block (18). One end of the moving rod (19) away from the moving block (18) is fixedly connected with a load-bearing plate (21). An elastic member is arranged between the load-bearing plate (21) and the second liquid storage shell (17). The load-bearing plate (21) is in extrusion fit with the mounting frame (2), and the symmetrically distributed guide rails (1) are all slidably connected with the load-bearing plate (21).

6. The counterweight balance device of an elevator with a noise reduction structure according to claim 5, characterized in that: The circumferentially and uniformly distributed buffer columns (20) are all arranged in a frustum shape, and the diameter of the buffer column (20) gradually decreases from bottom to top. At the same time, the heights of the circumferentially and uniformly distributed buffer columns (20) are not the same.

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