Telescopic counterweight balance arm for elevator

Abstract

The utility model relates to the field of counterweight balance arm discloses a telescopic counterweight balance arm for elevator, including base, the base top left and right two ends are fixedly connected with support, the support inside bottom is equipped with the limit slot, the limit slot upper side is equipped with the sliding slot, the inside sliding connection of sliding slot has the sliding block, the sliding block front side top end is equipped with the installation mouth, the sliding block top end is fixedly connected with the connecting block, the connecting block top end is provided with the fixing device, the base top is provided with the positioning device, the base top is equipped with the locating slot, the inside setting of locating slot has the locating block, the locating block top end is fixedly connected with the counterweight, in the utility model, through the multiple limit design and screw rod screw connection of sliding block and support, realize counterweight quick firm dismounting, utilize limit screw and preset interval limit hole simultaneously, can adjust support and sliding block height flexibly, satisfy different counterweight demand, strengthen device applicability and versatility.

Description

Technical Field

[0001] This utility model relates to the field of counterweight balance arms, and more particularly to a telescopic counterweight balance arm for elevators. Background Technology

[0002] In modern industrial production, construction, and machinery debugging, counterweights are widely used as key components to ensure the stability and safety of equipment operation. From balancing the center of gravity of large engineering machinery to precisely adjusting the counterweights of precision instruments, the performance of counterweights directly affects the overall work efficiency and operational safety of the equipment. As industries continue to raise their requirements for equipment performance, higher standards are being set for the ease of installation, adjustment flexibility, and structural stability of counterweights.

[0003] Currently, common counterweight devices on the market have many shortcomings in terms of installation and adjustment. During installation and disassembly, most rely on simple bolt fixing or snap-fit ​​connections. This method is not only inefficient, but also prone to loosening or even falling off during equipment operation due to vibration and external impacts, posing significant safety hazards. Regarding height adjustment, traditional counterweight devices often use fixed support structures, failing to flexibly adjust the height of the counterweight according to changes in actual working conditions. This results in poor applicability to different counterweight requirements. For example, in work scenarios requiring frequent counterweight adjustments, operators must spend considerable time and effort reinstalling and adjusting, significantly reducing work efficiency and increasing labor and time costs. Therefore, designing a counterweight device that allows for quick and secure installation and disassembly of the counterweight while also providing flexible height adjustment has become an urgent technical problem to be solved.

[0004] In response to this technical problem, this application proposes a telescopic counterweight balance arm for elevators. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a telescopic counterweight balance arm for elevators. Through the multi-limit design of the slider and the bracket, and the connection of the screw and the sleeve, the counterweight can be quickly and securely installed and removed. At the same time, the height of the bracket and the slider can be flexibly adjusted by using the limit screw and the preset spacing limit hole to meet different counterweight requirements and enhance the applicability and versatility of the device.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A telescopic counterweight balance arm for elevators includes a base, with brackets fixedly connected to the left and right ends of the top of the base. A limit groove is formed at the bottom inner side of each bracket, and a sliding groove is formed on the upper side of the limit groove. A slider is slidably connected inside the sliding groove. An installation port is formed at the top front of the slider, and a connecting block is fixedly connected to the top of the slider. A fixing device is provided at the top of the connecting block. A positioning device is provided at the top of the base, and a positioning groove is formed at the top of the base. A positioning block is set inside the positioning groove, and a counterweight is fixedly connected to the top of the positioning block. A positioning hole is formed at the center of the top of the counterweight, and positioning holes are formed on the left and right sides of the top of the counterweight.

[0008] Furthermore, the fixing device includes a screw opening at the center of the connecting block, with a screw rod connected to the screw opening. Screw openings are provided on the left and right sides of the top of the connecting block, with screw rods connected to the screw openings.

[0009] Furthermore, the positioning device includes a positioning rod 1 fixedly connected to the center of the top of the base, the outer wall of the positioning rod 1 being disposed inside the positioning hole 1, and positioning rods 2 fixedly connected to the left and right sides of the top of the base, the outer wall of the positioning rods 2 being disposed inside the positioning hole 2.

[0010] Furthermore, a limiting hole is provided on the side of the bracket, and a limiting screw is provided inside the limiting hole, which is located on the side of the slider.

[0011] Furthermore, the outer wall of the bottom end of the first screw is disposed inside the first positioning hole, and the outer wall of the bottom end of the second screw is disposed inside the second positioning hole.

[0012] Furthermore, a cover plate is provided at the top of the uppermost counterweight block, the second positioning hole is opened on the left and right sides of the top of the cover plate, and the first positioning hole is opened at the center of the top of the cover plate.

[0013] Furthermore, a first threaded sleeve is provided on the outer side of the first screw, and the top end of the first threaded sleeve is located on the lower side of the connecting block. A second threaded sleeve is provided on the outer side of the second screw, and the second threaded sleeve is located on the upper side of the connecting block.

[0014] Furthermore, one bottom end of the screw sleeve is positioned at the top of the cover plate.

[0015] This utility model has the following beneficial effects:

[0016] In this invention, the counterweight is quickly and securely installed and disassembled through the precise fit between the slider and the bracket, the multiple limiting design, and the connection method of the screw and the sleeve. The multiple positioning structure ensures stability, improves work efficiency, and ensures the stability and safety of the counterweight during the use of the device.

[0017] In this invention, the height of the bracket and the slider can be flexibly adjusted by the limiting screw and the limiting holes distributed at preset intervals. The slider can be raised as needed to meet different counterweight requirements, and the device can be flexibly adjusted according to the actual use scenario, thereby enhancing the applicability and versatility of the device. Attached Figure Description

[0018] Figure 1 This is a perspective view of a telescopic counterweight balance arm for an elevator proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of a support for a telescopic counterweight balance arm for an elevator proposed in this utility model.

[0020] Figure 3 This is a schematic diagram of a slider for a telescopic counterweight balance arm for an elevator, as proposed in this utility model.

[0021] Figure 4 This is a schematic diagram of the counterweight block for a telescopic counterweight balance arm for an elevator, as proposed in this utility model.

[0022] Figure 5 This is a schematic diagram of a positioning block for a telescopic counterweight balance arm for an elevator, as proposed in this utility model.

[0023] Figure 6 This is a schematic diagram of a cover plate for a telescopic counterweight balance arm for an elevator, as proposed in this utility model.

[0024] Legend:

[0025] 1. Base; 2. Bracket; 3. Limiting groove; 4. Sliding groove; 5. Slider; 6. Mounting port; 7. Connecting block; 8. Positioning rod one; 9. Limiting hole; 10. Limiting screw; 11. Thread one; 12. Thread two; 13. Screw one; 14. Screw two; 15. Screw sleeve two; 16. Screw sleeve one; 17. Counterweight; 18. Cover plate; 19. Positioning block; 20. Positioning hole one; 21. Positioning hole two; 22. Positioning groove; 23. Positioning rod two. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1-3The present invention provides an embodiment of a telescopic counterweight balance arm for an elevator, comprising a base 1, brackets 2 fixedly connected to the top left and right ends of the base 1, a limit groove 3 formed at the bottom inner side of the bracket 2, a sliding groove 4 formed on the upper side of the limit groove 3, a slider 5 slidably connected inside the sliding groove 4, an installation port 6 formed at the top front side of the slider 5, a connecting block 7 fixedly connected to the top of the slider 5, a screw opening 11 formed at the top of the connecting block 7, a screw rod 13 threadedly connected inside the screw opening 11, and screw openings 12 formed on the left and right sides of the top of the connecting block 7, a screw rod 14 threadedly connected inside the screw openings 12. A positioning rod 1 is fixedly connected to the center of the top of the base 1. The outer wall of the positioning rod 1 is set inside the positioning hole 20. Positioning rods 23 are fixedly connected to the left and right sides of the top of the base 1. The outer wall of the positioning rods 23 is set inside the positioning hole 21. A positioning groove 22 is opened at the top of the base 1. A positioning block 19 is set inside the positioning groove 22. A counterweight 17 is fixedly connected to the top of the positioning block 19. A positioning hole 20 is opened at the center of the top of the counterweight 17. Positioning holes 21 are opened on the left and right sides of the top of the counterweight 17.

[0028] Specifically, when slider 5 descends to its lowest position, its bottom end precisely engages with the top of the limiting groove 3 inside bracket 2, and the groove inside slider 5 is completely aligned with the limiting groove 3. At this time, the slide rails on both sides of the device form a continuous whole, and the mounting port 6 on slider 5 is located on the upper side of bracket 2, providing ample space for the installation of counterweight 17 without causing any obstruction. If it is necessary to adjust the overall height of the device to accommodate more counterweights 17, the locking state of the corresponding limiting holes 9 on bracket 2 and slider 5 can be released by rotating the limiting screw 10. Then, slider 5 is pulled upwards, causing the top connecting block 7 to rise smoothly along the sliding groove 4. The inside of slider 5 is equipped with a wear-resistant coating, allowing it to move back and forth multiple times without damage. The limiting holes 9 are distributed at a preset interval, and one more counterweight 17 can be installed for each hole raised. After the limiting hole 9 is raised to the appropriate position, the limiting screw 10 is screwed in again, and the bracket 2 and slider 5 are firmly connected by the limiting hole 9 and its internal threads. When installing the counterweight 17, first place the counterweight 17 at the horizontal position of the mounting port 6 and push it into the slider 5. The groove inside the slider 5 is the same as the limiting groove 3, so the narrower parts on the left and right sides of the counterweight 17 fit into the groove inside the slider 5. Move the counterweight 17 downward. During this process, the positioning hole 1 20 and positioning hole 21 on the counterweight 17 will respectively fit into the positioning rod 1 8 and positioning rod 2 23. At the same time, the positioning block 19 at the bottom of the counterweight 17 will accurately fall into the positioning groove 22 at the top of the base 1. The multiple limiting design ensures that the counterweight 17 is stable and does not shift in the horizontal direction. The left and right sides of the bottom counterweight 17 will also be embedded in the limiting groove 3 to further enhance the fixing effect. When continuing to install the upper counterweight 17, the positioning block 19 at the bottom of the upper counterweight 17 will be embedded into the positioning groove 22 at the top of the lower counterweight 17 and pass through the positioning rod 1 8 and positioning rod 2 23, continuing the horizontal limiting function. The heights of positioning rod 1 (8) and positioning rod 23 are the same as those of bracket 2. When the installation height of counterweight 17 exceeds that of bracket 2, its left and right sides will enter the side grooves of slider 5, cooperating with positioning block 19 and positioning groove 22 to achieve temporary horizontal limitation. After all counterweights 17 are installed, the cover plate 18 is placed on top of the uppermost counterweight 17, so that its bottom positioning block 19 fits tightly with the positioning groove 22 of the uppermost counterweight 17, which not only covers and protects the entire counterweight 17, but also prevents debris from falling in during elevator operation.

[0029] Reference Figures 4-6A limiting hole 9 is provided on the side of the bracket 2, and a limiting screw 10 is installed inside the limiting hole 9. The limiting hole 9 is located on the side of the slider 5. The bottom outer wall of screw 13 is located inside positioning hole 20, and the bottom outer wall of screw 21 is located inside positioning hole 21. A cover plate 18 is provided on the top of the uppermost counterweight 17. Positioning hole 21 is located on the left and right sides of the top of the cover plate 18, and positioning hole 120 is located at the center of the top of the cover plate 18. A threaded sleeve 16 is provided on the outside of screw 13, and the top of threaded sleeve 16 is located on the lower side of the connecting block 7. A threaded sleeve 25 is provided on the outside of screw 214, and threaded sleeve 215 is located on the upper side of the connecting block 7. The bottom of threaded sleeve 16 is located on the top of the cover plate 18.

[0030] Specifically, the threaded sleeve 16 is rotated along the thread to the uppermost side below the connecting block 7. The motor at the top of the screw 13 is started, driving the screw 13 to rotate and move downward through the thread in the threaded opening 11 until it reaches the positioning hole 20. Only the positioning hole 20 on the uppermost counterweight 17 and the cover plate 18 has threads, and their internal threads are precisely calculated to ensure that the cover plate 18 and the uppermost counterweight 17 can be smoothly connected without jamming. Continue to rotate the screw 13 so that it passes through the cover plate 18 and the uppermost counterweight 17, and stop rotating to press the center of the counterweight 17, improving the overall integrity of the counterweight 17. The threaded sleeve 16 above the cover plate 18 will move downward along with the screw 13, but due to distance limitations, it will still be at the top of the cover plate 18. Tighten the threaded sleeve 16 in the same direction to the position of the top of the cover plate 18 to further press the cover plate 18 and the counterweight 17, helping to enhance the fixing effect. Start the motor above screw 14 to rotate and move it downwards along the thread in screw hole 12, inserting it into positioning hole 21 until it reaches the top of positioning rod 23. Screw 14 has threads only in its upper half; within the positioning holes 21 of counterweight 17 and cover plate 18, it is a straight rod structure, thus limiting the left and right sides of counterweight 17 and cover plate 18 and enhancing overall stability. After screw 14 is in place, tighten screw sleeve 15 to firmly fix it and prevent displacement. At this point, the left and right displacement of counterweight 17 within the height of bracket 2 is limited by positioning rod 23, and the position of counterweight 17 above the height of bracket 2 at slider 5 is limited by screw 14. Screw 14 and positioning rod 23 provide shear resistance for counterweight 17. Conversely, the counterweight 17 can be disassembled by reversing the operation.

[0031] Working Principle: When this device is in operation, the slider 5 first descends to its lowest position, with its bottom end precisely engaging with the top of the limiting groove 3 inside the bracket 2. The inner groove of the slider 5 is completely aligned with the limiting groove 3, making the slide rails on both sides of the device a continuous whole. At this time, the mounting port 6 on the slider 5 is on the upper side of the bracket 2, which does not affect the installation of the counterweight 17 from the mounting port 6. When it is necessary to adjust the overall height of the device to install more counterweights 17, the locking of the corresponding limiting holes 9 on the bracket 2 and slider 5 is released by rotating the limiting screw 10. Then, the slider 5 is pulled upward, causing the top connecting block 7 to rise smoothly along the sliding groove 4. Since the limiting holes 9 are distributed at a preset interval, an integer number of counterweights 17 can be installed for each hole position raised. After the limiting holes 9 are raised to the appropriate position, the limiting screw 10 is screwed in again, and the bracket 2 and slider 5 are securely connected by the limiting holes 9 and their internal threads. When installing the counterweight 17, first place it at the horizontal position of the mounting opening 6 and push it into the slider 5 until the left and right sides of the counterweight 17 are tightly fitted with the internal grooves of the slider 5. Then move the counterweight 17 downward. During this process, the positioning holes 1-20 and 21 on the counterweight 17 will respectively fit into the positioning rods 1-8 and 2-3. At the same time, the positioning block 19 at the bottom of the counterweight 17 will accurately fall into the positioning groove 22 at the top of the base 1, achieving horizontal stability without displacement through multiple limiting mechanisms. The left and right sides of the bottom counterweight 17 will also be embedded in the limiting grooves 3 to further enhance the fixing effect. When installing the upper counterweight 17, its bottom positioning block 19 will be embedded into the top positioning groove 22 of the lower counterweight 17 and pass through the positioning rods 1-8 and 2-3, continuing the horizontal limiting function. When the installation height of the counterweight 17 exceeds the bracket 2, its left and right sides will enter the side grooves of the slider 5, cooperating with the positioning block 19 and the positioning groove 22 to achieve temporary horizontal limiting. After all counterweights 17 are installed, place the cover plate 18 on top of the uppermost counterweight 17, ensuring that its bottom positioning block 19 fits tightly with the positioning groove 22 of the uppermost counterweight 17, providing coverage and protection and preventing debris from falling in. Next, start the motor at the top of the screw 13, driving it to rotate and move downwards through the screw hole 11 until it reaches the positioning hole 20. The internal thread of the positioning hole 20 is precisely calculated, ensuring a smooth connection between the cover plate 18 and each section of the counterweight 17 without jamming. Continue rotating the screw 13 until it passes through the topmost counterweight 17, stopping to connect the counterweight 17 and the center of the cover plate 18, improving the overall integrity of the counterweight 17. Finally, tighten the screw sleeve 16 on top of the cover plate 18 in the same direction to further secure the counterweight 17 and the cover plate 18. Start the motor above screw 14 to rotate and move it downwards within threaded opening 12 until it reaches the top of positioning rod 23. The design of the threaded upper section of screw 14, combined with its straight rod structure, connects the counterweight 17 and the left and right sides of cover plate 18, enhancing overall stability. Once screw 14 is in place, tighten threaded sleeve 15 to secure it firmly.When it is necessary to disassemble the counterweight 17, the reverse procedure is performed to achieve rapid disassembly of the counterweight 17. Through the above structural design and operation procedure, this device not only achieves rapid and secure installation and disassembly of the counterweight 17, but also allows for flexible adjustment of the height of the bracket 2 and free adjustment of the height of the slider 5 by means of the limiting screw 10 and the limiting hole 9, so as to meet different counterweight requirements.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A telescopic counterweight balance arm for elevators, comprising a base (1), characterized in that: The base (1) has brackets (2) fixedly connected to the top left and right ends. The brackets (2) have a limiting groove (3) at the bottom inside. The limiting groove (3) has a sliding groove (4) on the upper side. The sliding groove (4) has a slider (5) slidably connected inside. The slider (5) has an installation port (6) at the top front. The slider (5) has a connecting block (7) fixedly connected to the top. The connecting block (7) has a fixing device at the top. The base (1) has a positioning device at the top. The base (1) has a positioning groove (22) at the top. The positioning groove (22) has a positioning block (19) inside. The positioning block (19) has a counterweight (17) fixedly connected to the top. The counterweight (17) has a positioning hole (20) at the center of the top. The counterweight (17) has two positioning holes (21) on the left and right sides of the top.

2. The telescopic counterweight balance arm for elevators according to claim 1, characterized in that: The fixing device includes a screw hole (11) at the center of the connecting block (7), a screw rod (13) is threaded inside the screw hole (11), and screw holes (12) are opened on the left and right sides of the top of the connecting block (7), a screw rod (14) is threaded inside the screw hole (12).

3. The telescopic counterweight balance arm for elevators according to claim 1, characterized in that: The positioning device includes a positioning rod 1 (8) fixedly connected to the center of the top of the base (1), the outer wall of the positioning rod 1 (8) is set inside the positioning hole 1 (20), and positioning rod 2 (23) is fixedly connected to the left and right sides of the top of the base (1), the outer wall of the positioning rod 2 (23) is set inside the positioning hole 2 (21).

4. The telescopic counterweight balance arm for elevators according to claim 1, characterized in that: The bracket (2) has a limiting hole (9) on its side, and a limiting screw (10) is provided inside the limiting hole (9). The limiting hole (9) is located on the side of the slider (5).

5. A telescopic counterweight balance arm for an elevator according to claim 2, characterized in that: The bottom outer wall of the first screw (13) is located inside the first positioning hole (20), and the bottom outer wall of the second screw (14) is located inside the second positioning hole (21).

6. The telescopic counterweight balance arm for elevators according to claim 1, characterized in that: The top of the uppermost counterweight (17) is provided with a cover plate (18), the second positioning hole (21) is opened on the left and right sides of the top of the cover plate (18), and the first positioning hole (20) is opened at the center of the top of the cover plate (18).

7. A telescopic counterweight balance arm for an elevator according to claim 2, characterized in that: A screw sleeve (16) is provided on the outside of the screw one (13), and the top of the screw sleeve (16) is provided on the lower side of the connecting block (7). A screw sleeve (15) is provided on the outside of the screw two (14), and the screw sleeve (15) is provided on the upper side of the connecting block (7).

8. A telescopic counterweight balance arm for an elevator according to claim 7, characterized in that: The bottom end of the screw sleeve (16) is located on the upper side of the cover plate (18).

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