Dynamic counterweight self-adaptive energy-saving adjusting assembly applied to elevator reconstruction project

Abstract

The invention discloses a dynamic counterweight self-adaptive energy-saving adjusting assembly applied to elevator reconstruction engineering, and relates to the field of elevator reconstruction engineering, the dynamic counterweight self-adaptive energy-saving adjusting assembly specifically comprises an elevator shaft track and a fixed counterweight block slidably connected in the elevator shaft track through a guide wheel, and the bottom of the fixed counterweight block is provided with a counterweight dynamic adjusting assembly for adjusting the elevator counterweight; a dynamic balance weight adjusting mechanism is introduced, the balance weight value is automatically adjusted according to the actual operation load of the elevator, the weight difference between the lift car and the balance weight system is effectively reduced, the burden of a motor driving structure is reduced, and the energy-saving purpose is achieved; in the elevator running process, the friction force between the guide wheel and the elevator shaft track is reduced, the running stability of the elevator is further improved, and energy consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator renovation projects, and more particularly to a dynamic counterweight adaptive energy-saving adjustment assembly used in elevator renovation projects. Background Art

[0002] The elevator renovation project in old residential areas refers to the renovation of multi-story residential buildings without elevators. The project of installing elevators can also cover the renovation of old elevators that have been in service for a long time and have safety hazards to improve elevator performance and ensure the safety of residents. The floors of old residential areas are usually less than 6-8 floors, and the height of the first floor is 3.2m.

[0003] Traditional elevator counterweight systems typically use a fixed counterweight design. The counterweight value is determined at elevator installation and cannot be dynamically adjusted based on the actual operating load of the elevator. This design method places unnecessary strain on the motor drive structure during operation, especially when the elevator load fluctuates significantly, increasing energy consumption and potentially affecting the smoothness and safety of the elevator.

[0004] In addition, when the guide wheel in the elevator counterweight system slides with the elevator shaft track, the friction between the two will also increase the burden on the motor drive structure. A solution is now provided. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a dynamic counterweight adaptive energy-saving adjustment assembly for use in elevator renovation projects.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dynamic counterweight adaptive energy-saving adjustment assembly for use in elevator renovation projects, comprising an elevator shaft track and a fixed counterweight block slidably connected thereto via a guide wheel, wherein a dynamic counterweight adjustment assembly for adjusting the elevator counterweight is provided at the bottom of the fixed counterweight block;

[0007] The counterweight dynamic adjustment assembly consists of a movable counterweight box, a liquid adding pipe and a liquid extraction pipe. A liquid adding control valve is fixedly provided on the outer wall of the liquid adding pipe, and a liquid extraction control valve is fixedly provided on the outer wall of the liquid extraction pipe. An adjustment structure for adjusting the counterweight of the movable counterweight box is provided at the floor stop of the elevator shaft track.

[0008] A friction reducing member for reducing friction between the elevator shaft track and the guide wheel is provided above the fixed counterweight block.

[0009] Furthermore, the adjustment structure includes a liquid pump fixedly arranged on the outer side walls of the elevator shaft track, the output end of the liquid pump is connected to a tension ring through a telescopic tube, and the tension ring is connected to the outer wall of the elevator shaft track through an electric push rod.

[0010] Furthermore, the output side of the tension ring is provided with a connecting pipe which is laterally inserted into the inner wall of the elevator shaft track, and the side walls corresponding to the movable counterweight box, the liquid adding pipe and the liquid extracting pipe are all provided with docking grooves, and the connecting pipe and the docking grooves are arranged corresponding to each other.

[0011] Furthermore, the output end of the liquid pump close to the liquid adding pipe is commonly connected to an input liquid pipe, and the upper part of the input liquid pipe is connected to an upper liquid tank.

[0012] Furthermore, the output ends of the liquid pumps close to the liquid extraction pipe are commonly connected to an output liquid pipe, and a lower liquid tank is connected below the output liquid pipe.

[0013] Furthermore, the friction reducing component includes an oil storage tank fixedly mounted on the upper beam of the elevator shaft track, a lower oil cavity is provided on the inner wall of the upper beam of the elevator shaft track, an upper oil cavity for conveying lubricating oil to the lower oil cavity is provided between the oil storage tank and the lower oil cavity, and a fixing sleeve is fixedly mounted on the bottom wall of the upper beam of the elevator shaft track below the lower oil cavity.

[0014] Furthermore, a movable column is slidably arranged between the fixed sleeve and the upper oil chamber, a thrust spring is arranged between the top wall of the movable column and the top wall of the upper oil chamber, an L-connecting groove is opened inside the movable column, and a bottom rod is installed under the movable column, and the bottom of the bottom rod is movably extended to the bottom of the fixed sleeve.

[0015] Furthermore, an output pipe is connected to the bottom side wall of the fixed sleeve, the output side of the output pipe is connected to a spray pipe, and both sides of the spray pipe are fixedly connected to U-shaped oil spray pipes, and the output end of the U-shaped oil spray pipe is arranged toward the inner wall of the top of the elevator shaft track.

[0016] Furthermore, an upper connecting frame is welded to the top of the fixed counterweight block, and multiple steel cables are connected above the upper connecting frame.

[0017] Technical effects and advantages of the present invention:

[0018] 1. In the present invention, if the car is overweight and stops at a floor stop, the elevator's counterweight system is at the corresponding elevator shaft track floor stop, and the extended end of the electric push rod is controlled to retract, so that the connecting pipe moves into the inside of the docking groove to complete the airtight engagement, and the liquid pump starts to work. The liquid enters the interior of the movable counterweight box through the liquid input pipe, the liquid adding pipe, the telescopic pipe, the connecting pipe and the liquid adding pipe, thereby increasing the weight of the movable counterweight box to make it basically the same as the weight inside the car, reducing the weight difference between the car and the weight inside the car and the weight of the elevator counterweight system, reducing the workload of the motor drive structure on the bridge car, and achieving the purpose of energy saving.

[0019] 2. In the present invention, when the fixed counterweight carries the movable counterweight box to the top of the elevator shaft track, the top of the fixed counterweight presses the bottom rod upward, and the bottom rod presses the movable column upward, connecting the L-shaped connecting groove with the output pipe. The lubricating oil in the oil storage tank enters the lower oil chamber through the upper oil chamber, then enters the output pipe through the L-shaped connecting groove, and finally enters the spray pipe through the output pipe. Finally, it is sprayed onto the inner wall above the elevator shaft track through two sets of U-shaped spray pipes, thereby reducing the friction between the guide wheel and the elevator shaft track in this elevator counterweight system, reducing the resistance during starting and braking of the elevator drive tooling, making the operation smoother, and further saving energy.

[0020] 3. The present invention introduces a dynamic counterweight adjustment mechanism to automatically adjust the counterweight value according to the actual operating load of the elevator, effectively reducing the weight difference between the car and the counterweight system, reducing the burden on the motor drive structure, and achieving energy saving. In addition, the assembly is also provided with a friction reducing member to reduce the friction between the guide wheel and the elevator shaft track during elevator operation, further improving the operating stability and efficiency of the elevator. The dynamic counterweight adaptive energy-saving adjustment assembly of the present invention has a simple structure, easy installation, and strong adaptability. It is particularly suitable for the complex construction environment in elevator renovation projects in old residential areas, providing effective technical support for improving elevator performance and ensuring the safety of residents. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the appearance of the overall structure of the present invention.

[0022] Figure 2 It is a front view of the overall structure of the present invention.

[0023] Figure 3 This is an enlarged stereoscopic view of the local structure of the counterweight dynamic adjustment assembly.

[0024] Figure 4 This is an enlarged stereoscopic view of the local structure of the counterweight dynamic adjustment assembly.

[0025] Figure 5 It is an enlarged stereoscopic view of the local structure of the friction reducing member in the present invention.

[0026] Figure 6 It is an enlarged stereoscopic view of the local structure of the friction reducing member in the present invention.

[0027] Figure 7 It is a structural stereogram of the spray pipe and the U-shaped oil spray pipe in the present invention.

[0028] The accompanying drawings are marked as follows: 1. elevator shaft track; 2. fixed counterweight block; 3. upper connecting frame; 4. multi-strand steel rope; 5. movable counterweight box; 8. lower liquid tank; 9. input liquid pipe; 10. upper liquid tank; 11. output liquid pipe; 51. liquid pump; 53. telescopic tube; 54. electric push rod; 55. tension ring; 56. connecting pipe; 57. docking groove; 61. liquid adding control valve; 62. liquid adding pipe; 63. liquid extraction pipe; 64. liquid extraction control valve; 71. oil storage tank; 72. upper oil chamber; 73. lower oil chamber; 74. thrust spring; 75. movable column; 76. L-connecting groove; 77. fixed sleeve; 78. bottom rod; 79. output pipe; 710. spray pipe; 711. U-shaped oil spray pipe. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example 1: Please refer to Figure 1-Figure 7 As shown, in the prior art, elevator counterweight systems generally adopt a fixed counterweight design. The counterweight value is determined when the elevator is installed and cannot be dynamically adjusted according to the actual operating load of the elevator. This design method will cause the motor drive structure to bear unnecessary burdens and increase energy consumption during elevator operation, especially when the elevator load changes greatly. The following solution can be used to solve this problem;

[0031] The dynamic counterweight adaptive energy-saving adjustment assembly used in elevator renovation projects in this embodiment includes an elevator shaft track 1 and a fixed counterweight block 2 slidably connected thereto. The bottom of the fixed counterweight block 2 is provided with a counterweight dynamic adjustment assembly for adjusting the elevator counterweight.

[0032] An upper connecting frame 3 is welded to the top of the fixed counterweight 2, and multiple steel cables 4 are connected to the top of the upper connecting frame 3;

[0033] The dynamic counterweight adjustment assembly consists of a movable counterweight box 5, a liquid adding pipe 62, and a liquid extraction pipe 63. A liquid adding control valve 61 is fixedly provided on the outer wall of the liquid adding pipe 62, and a liquid extraction control valve 64 is fixedly provided on the outer wall of the liquid extraction pipe 63. An adjustment structure for adjusting the counterweight of the movable counterweight box 5 is provided at the floor stop of the elevator shaft track 1.

[0034] By dynamically regulating the counterweight system of this elevator, the weight difference between the car and the weight inside the car and the weight of the elevator counterweight system is reduced, thereby reducing the workload of the motor drive structure on the bridge car and achieving energy saving.

[0035] The adjustment structure includes a liquid pump 51 fixedly mounted on both side walls of the elevator shaft track 1. The output end of the liquid pump 51 is connected to a tension ring 55 via a telescopic tube 53. The tension ring 55 is connected to the outer wall of the elevator shaft track 1 via an electric push rod 54. The output side of the tension ring 55 is provided with a connecting pipe 56 that is laterally inserted into the inner wall of the elevator shaft track 1. The side walls of the movable counterweight box 5 corresponding to the liquid adding pipe 62 and the liquid extracting pipe 63 are each provided with a docking groove 57. The connecting pipe 56 and the docking groove 57 are arranged corresponding to each other.

[0036] By controlling the extension end of the electric push rod 54 to retract, the connecting tube 56 is moved into the docking groove 57 to complete the airtight engagement;

[0037] The output end of the liquid pump 51 near the liquid adding pipe 62 is commonly connected to the input liquid pipe 9, and the upper end of the input liquid pipe 9 is connected to the upper liquid tank 10, which is installed above the elevator shaft wall. The output end of the liquid pump 51 near the liquid extraction pipe 63 is commonly connected to the output liquid pipe 11, and the lower end of the output liquid pipe 11 is connected to the lower liquid tank 8, which is installed below the elevator shaft wall.

[0038] If the car is too light and stops at a floor stop, the counterweight system of the elevator is at the corresponding floor stop of the elevator shaft track 1. At this time, the liquid extraction control valve 64 above the corresponding liquid extraction pipe 63 is opened, and the liquid is input into the connecting pipe 56 and then into the interior of the output liquid pipe 11. Under the influence of gravitational potential energy, it enters the lower liquid tank 8 for temporary storage.

[0039] The movable counterweight box 5 is fixedly connected to the bottom of the fixed counterweight block 2 by bolts.

[0040] It should be noted that the upper liquid tank 10 and the lower liquid tank 8 are connected in a circular manner via two sets of high-pressure constant-flow liquid phase pumps.

[0041] Example 2: Please refer to Figure 5-Figure 7 As shown, the problem that when the guide wheel in the elevator counterweight system slides with the elevator shaft rail 1, the friction between the two increases the burden on the motor drive structure, which can be solved by the following solution;

[0042] A friction reducing member is provided above the fixed counterweight 2 to reduce friction between the elevator shaft rail 1 and the guide wheel. The friction reducing member includes an oil storage tank 71 fixedly mounted on the upper beam of the elevator shaft rail 1. A lower oil cavity 73 is provided on the inner wall of the upper beam of the elevator shaft rail 1. An upper oil cavity 72 is provided between the oil storage tank 71 and the lower oil cavity 73 for supplying lubricating oil to the lower oil cavity 73.

[0043] A fixed sleeve 77 is fixedly installed on the bottom wall of the upper beam of the elevator shaft rail 1 below the lower oil chamber 73. A movable column 75 is slidably arranged between the fixed sleeve 77 and the upper oil chamber 72. A thrust spring 74 is arranged between the top wall of the movable column 75 and the top wall of the upper oil chamber 72. An L-type connecting groove 76 is opened inside the movable column 75. A bottom rod 78 is installed under the movable column 75. The bottom of the bottom rod 78 is movably extended to the bottom of the fixed sleeve 77.

[0044] When the fixed counterweight 2 carrying the movable counterweight box 5 moves to the top of the elevator shaft track 1, the top of the fixed counterweight 2 presses the bottom rod 78 upward, and the lubricating oil in the oil storage tank 71 enters the output pipe 79 through the upper oil chamber 72, the lower oil chamber 73, and the L-type connecting groove 76, and is finally sprayed onto the inner wall above the elevator shaft track 1 through two sets of U-shaped oil spray pipes 711, thereby reducing the friction between the guide wheel and the elevator shaft track 1 in this elevator counterweight system, reducing the resistance during starting and braking of the elevator drive tooling, and making the operation more stable;

[0045] An output pipe 79 is connected to the bottom side wall of the fixed sleeve 77. The output side of the output pipe 79 is connected to a spray pipe 710. Both sides of the spray pipe 710 are fixedly connected to U-shaped oil spray pipes 711. The output end of the U-shaped oil spray pipe 711 is arranged toward the inner wall of the top of the elevator shaft track 1.

[0046] In the present invention, it can be seen from the combination of Example 1 and Example 2 that:

[0047] By introducing a dynamic counterweight adjustment mechanism, the assembly can automatically adjust the counterweight value according to the actual operating load of the elevator, effectively reducing the weight difference between the car and the counterweight system, thereby reducing the burden on the motor drive structure and achieving energy conservation. In addition, the assembly is also provided with a friction reducing member, which can reduce the friction between the guide wheel and the elevator shaft track 1 during elevator operation, further improving the operational stability and efficiency of the elevator. The dynamic counterweight adaptive energy-saving adjustment assembly of the present invention has a simple structure, is easy to install, and has strong adaptability. It is particularly suitable for the complex construction environments of elevator renovation projects in old residential areas, providing effective technical support for improving elevator performance and ensuring the safety of residents.

[0048] Working principle: When the elevator is in use: If the car is too heavy and stops at a floor stop, the counterweight system of the elevator is at the corresponding floor stop of the elevator shaft track 1. At this time, the liquid adding control valve 61 above the corresponding liquid adding pipe 62 is opened, and the extended end of the electric push rod 54 is controlled to retract, so that the connecting pipe 56 moves to the inside of the docking groove 57, completing the airtight engagement, and the liquid pump 51 works. The liquid enters the interior of the movable counterweight box 5 through the liquid input pipe 9, the liquid adding pipe 52, the telescopic pipe 53, the connecting pipe 56 and the liquid adding pipe 62, increasing the weight of the movable counterweight box 5 to make it basically the same as the weight inside the car; reducing the weight difference between the car and the weight inside the car and the weight of the counterweight system of the elevator, thereby reducing the workload of the motor drive structure on the bridge car, and achieving the purpose of energy saving;

[0049] And when the fixed counterweight block 2 carries the movable counterweight box 5 to the top of the elevator shaft track 1, the top of the fixed counterweight block 2 presses the bottom rod 78 upward, and the bottom rod 78 presses the movable column 75 upward, so that the L connecting groove 76 is connected with the output pipe 79, and the lubricating oil inside the oil storage tank 71 enters the lower oil chamber 73 through the upper oil chamber 72, and then enters the output pipe 79 through the L connecting groove 76, and enters the ejection pipe 710 through the output pipe 79, and finally is sprayed onto the inner wall above the elevator shaft track 1 through two sets of U-shaped oil injection pipes 711, reducing the friction between the guide wheel and the elevator shaft track 1 in this elevator counterweight system, reducing the resistance during starting and braking of the elevator drive tooling, running more smoothly, and further saving energy.

[0050] Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification in order to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A dynamic counterweight adaptive energy-saving adjustment assembly for use in elevator renovation projects, comprising an elevator shaft track (1) and a fixed counterweight block (2) slidably connected to the inside of the track via a guide wheel, characterized in that: A counterweight dynamic adjustment assembly for adjusting the elevator counterweight is provided at the bottom of the fixed counterweight block (2); The counterweight dynamic adjustment assembly consists of a movable counterweight box (5), a liquid adding pipe (62), and a liquid extraction pipe (63); a liquid adding control valve (61) is fixedly provided on the outer wall of the liquid adding pipe (62); a liquid extraction control valve (64) is fixedly provided on the outer wall of the liquid extraction pipe (63); and an adjustment structure for adjusting the counterweight of the movable counterweight box (5) is provided at the floor stop of the elevator shaft track (1); A friction reducing member for reducing friction between the elevator shaft track (1) and the guide wheel is provided above the fixed counterweight block (2).

2. The dynamic counterweight adaptive energy-saving adjustment assembly for use in elevator renovation projects according to claim 1 is characterized by: The regulating structure comprises a liquid pump (51) fixedly arranged on both side walls of the elevator shaft track (1); the output end of the liquid pump (51) is connected to a tension ring (55) via a telescopic tube (53); and the tension ring (55) is connected to the outer wall of the elevator shaft track (1) via an electric push rod (54).

3. The dynamic counterweight adaptive energy-saving adjustment assembly for use in elevator renovation projects according to claim 2 is characterized by: The output side of the tension ring (55) is provided with a connecting pipe (56) which is laterally inserted into the inner wall of the elevator shaft track (1); the side walls of the movable counterweight box (5) corresponding to the liquid adding pipe (62) and the liquid extracting pipe (63) are all provided with docking grooves (57); the connecting pipe (56) and the docking grooves (57) are arranged corresponding to each other.

4. The dynamic counterweight adaptive energy-saving adjustment assembly for use in elevator renovation projects according to claim 3 is characterized by: The output end of the liquid pump (51) close to the liquid adding pipe (62) is commonly connected to an input liquid pipe (9), and the upper part of the input liquid pipe (9) is connected to an upper liquid tank (10).

5. The dynamic counterweight adaptive energy-saving adjustment assembly for use in elevator renovation projects according to claim 3 is characterized by: The output end of the liquid pump (51) close to the liquid extraction pipe (63) is commonly connected to an output liquid pipe (11), and the lower portion of the output liquid pipe (11) is connected to a lower liquid tank (8).

6. The dynamic counterweight adaptive energy-saving adjustment assembly for use in elevator renovation projects according to claim 1 is characterized by: The friction reducing member comprises an oil storage tank (71) fixedly mounted on an upper beam of an elevator shaft track (1); a lower oil cavity (73) is provided on the inner wall of the upper beam of the elevator shaft track (1); an upper oil cavity (72) for conveying lubricating oil to the lower oil cavity (73) is provided between the oil storage tank (71) and the lower oil cavity (73); and a fixing sleeve (77) is fixedly mounted on the bottom wall of the upper beam of the elevator shaft track (1) located below the lower oil cavity (73).

7. The dynamic counterweight adaptive energy-saving adjustment assembly for use in elevator renovation projects according to claim 6 is characterized by: A movable column (75) is slidably provided between the fixed sleeve (77) and the upper oil chamber (72), a thrust spring (74) is provided between the top wall of the movable column (75) and the top wall of the upper oil chamber (72), an L-type connecting groove (76) is provided inside the movable column (75), a bottom rod (78) is installed under the movable column (75), and the bottom of the bottom rod (78) is movably extended to the bottom of the fixed sleeve (77).

8. The dynamic counterweight adaptive energy-saving adjustment assembly for use in elevator renovation projects according to claim 7 is characterized by: An output pipe (79) is connected to the bottom side wall of the fixed sleeve (77), and an output side of the output pipe (79) is connected to a spray pipe (710). Both sides of the spray pipe (710) are fixedly connected to U-shaped oil spray pipes (711), and the output end of the U-shaped oil spray pipe (711) is arranged toward the inner wall of the top of the elevator shaft track (1).

9. The dynamic counterweight adaptive energy-saving adjustment assembly for use in elevator renovation projects according to claim 1 is characterized in that: An upper connection frame (3) is welded to the top of the fixed counterweight (2), and a plurality of steel cables (4) are connected above the upper connection frame (3).

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