High-speed tensioning device

Abstract

The utility model discloses a high-speed tensioning device, which relates to the technical field of elevator steel wire rope tensioning and comprises two fixed plates, two pairs of limiting blocks are fixedly connected to the front surfaces of the two fixed plates, and two movable plates are symmetrically and slidably connected to the side surfaces, close to each other, of the two pairs of limiting blocks. A fixed box is fixedly connected between the side faces, close to each other, of the two movable plates. In the actual use process, through the synergistic effect of the two fixing strips, the two mounting grooves, the two rectangular cavities and the auxiliary stacking assembly, the operation that the multiple balancing weights are sequentially stacked and placed between the two mounting grooves from bottom to top can be effectively achieved, and the auxiliary stacking assembly is used for stacking the balancing weights in the downward sliding process of the balancing weights along the mounting grooves. When the balancing weight is installed and placed, upward resistance can be provided for the balancing weight, so that the balancing weight is prevented from violently colliding with the balancing weight on the lower side, in this way, the safety when the balancing weight is installed and placed is remarkably improved, and then the safety and reliability of the whole tensioning device are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of elevator wire rope tensioning technology, and in particular to a high-speed tensioning device. Background Technology

[0002] An elevator tensioning device, as the name suggests, is a device in an elevator system used to maintain the tension of the wire rope. During elevator operation, the wire rope bears the weight of the car and counterweight while transmitting traction. The tensioning device maintains the tension of the wire rope, ensuring that it remains at an appropriate tension throughout elevator operation, avoiding safety hazards caused by wire rope slack. It also compensates for changes in wire rope length. With frequent elevator use, the wire rope will lengthen due to wear and stretching. The tensioning device can automatically or manually adjust the tension of the wire rope to compensate for these length changes, ensuring smooth elevator operation.

[0003] Existing elevator tensioning devices generally consist of a tensioning wheel and a counterweight at the bottom of the tensioning wheel. However, the number of counterweights required for the tensioning device varies depending on the elevator's specifications and load-bearing requirements. In existing elevator tensioning devices, the counterweights are stacked from bottom to top. Because the counterweights are heavy, stacking them is laborious, and they are prone to falling and colliding with the counterweights below them, causing damage.

[0004] To solve the above problems, a high-speed tensioning device is urgently needed. Utility Model Content

[0005] The purpose of this utility model is to provide a high-speed tensioning device to solve the problems mentioned in the background art. When the existing elevator tensioning device is stacked and installed with counterweights from bottom to top, the counterweights are heavy and therefore require a lot of effort to stack. Furthermore, the counterweights are prone to falling and colliding with the counterweights below them, causing damage.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-speed tensioning device, comprising two fixed plates, two pairs of limiting blocks fixedly connected to the front of the two fixed plates, two movable plates symmetrically slidably connected to the adjacent sides of the two pairs of limiting blocks, a fixed box fixedly connected between the adjacent sides of the two movable plates, a tensioning wheel rotatably connected inside the fixed box, two fixing strips symmetrically fixedly connected to the bottom of the fixed box, two mounting grooves symmetrically formed on the adjacent sides of the two fixing strips, and two rectangular cavities symmetrically formed on the front of the two fixing strips. Two baffles are detachably fixed to the front of the two fixing strips. The two baffles are located in front of the two rectangular cavities and block the two rectangular cavities respectively. Two support strips are symmetrically fixed to the front and rear sides of the two fixing strips. Multiple counterweights are stacked between the two mounting slots from bottom to top. Two auxiliary stacking components are symmetrically arranged in the two mounting slots. An upper limit plate and a lower limit plate are fixedly connected to the right side of the movable plate on the right side. A limit switch is fixedly connected to the front of the fixing plate. The limit switch is located between the upper limit plate and the lower limit plate.

[0007] The auxiliary stacking assembly is used to increase resistance as the counterweight slides down the mounting slot.

[0008] Preferably, the auxiliary stacking assembly includes limiting posts fixedly connected to the bottom wall of the mounting groove. Multiple counterweights are movably sleeved between two limiting posts. Two sets of mounting cavities are symmetrically opened on the left and right sides of each limiting post. Multiple mounting cavities in each set are equidistantly distributed from bottom to top. Two sets of blocking plates are symmetrically rotatably connected between the front and rear inner walls of the two sets of mounting cavities via a first rotating rod and a first torsion spring. Each pair of two blocking plates is arranged in a figure-eight shape, and the bottom ends of the two sets of blocking plates extend to the outside of the mounting cavity. This arrangement allows the two sets of blocking plates to act as a buffer against the counterweights as they move downwards along the limiting posts, preventing them from falling rapidly and colliding with the lower counterweights when stacked from the rectangular cavity into the mounting groove, thus ensuring the safe and smooth stacking of the counterweights and effectively improving the safety and reliability of the tensioning device.

[0009] Preferably, the auxiliary stacking assembly further includes a resistance adjustment mechanism provided on the limiting post. The advantage of this setting is that the resistance generated by the auxiliary stacking assembly can be flexibly adjusted according to the weight of the counterweight, thereby ensuring that the auxiliary stacking assembly can provide an appropriate amount of resistance to the counterweight and ensuring that the installation and stacking operation of the counterweight is carried out safely and smoothly.

[0010] Preferably, the resistance adjustment mechanism includes a threaded rod rotatably connected to the top of the limiting post. The bottom end of the threaded rod passes through each group of multiple mounting cavities and is rotatably connected to the inner bottom wall of the lowest mounting cavity. The resistance adjustment mechanism also includes multiple movable blocks slidably connected between the front and rear inner walls of the multiple mounting cavities. Each of the multiple movable blocks is threaded onto the outer thread surface of the threaded rod. Two first elastic elements are symmetrically fixedly connected to the left and right sides of each movable block. The ends of the two first elastic elements that are far apart can respectively abut against the adjacent sides of two adjacent barrier plates. The advantage of this arrangement is that by rotating the threaded rod, the two groups of movable blocks can be moved up and down, thereby adjusting the distance between the first elastic elements and the sides of the adjacent barrier plates. This allows adjustment of the elastic resistance encountered by the barrier plates when they rotate into the mounting cavities, making the resistance adjustment operation of the auxiliary stacking assembly simple and convenient, and improving the convenience of the tensioning device.

[0011] Preferably, the auxiliary stacking assembly further includes a resistance equalization mechanism provided on the limiting post. The advantage of this arrangement is that it makes the resistance experienced by the counterweights more uniform when they are stacked, making the installation and placement of the counterweights smoother and more convenient.

[0012] Preferably, the resistance-sharing mechanism includes two sets of receiving cavities symmetrically opened on the opposite sides of the two sets of barrier plates. Two sets of square plates are symmetrically slidably connected in the two sets of receiving cavities via guide rods. A second elastic element is fixedly connected between the bottom of the square plate and the inner sidewall of the receiving cavity. Two sets of stops are symmetrically fixedly connected on the opposite sides of the two sets of barrier plates. The stops are perpendicular to the barrier plates. The advantage of this arrangement is that when the counterweight moves downward along the mounting groove and comes into contact with each pair of two barrier plates and two stops, while the barrier plates rotate toward the inside of the mounting cavity, the two square plates also overcome the elastic force of the second elastic element and slide downward along the receiving cavity. This distributes the resistance to the counterweight onto the square plates and barrier plates, making the resistance experienced by the counterweight more uniform.

[0013] Preferably, the stop is rotatably connected to the bottom of the square plate via a second rotating rod and a second torsion spring. The advantage of this arrangement is that it allows the counterweight to pass through each pair of two stops more smoothly, ensuring that the installation and placement of the counterweight can be carried out smoothly, and further improving the reliability and practicality of the tensioning device.

[0014] In summary, the technical effects and advantages of this utility model are as follows:

[0015] 1. In this utility model, by setting two fixing strips, two mounting slots, two rectangular cavities and an auxiliary stacking component, when multiple counterweights are stacked from bottom to top between the two mounting slots, the auxiliary stacking component can provide upward resistance to the counterweights, thereby preventing the counterweights from falling too fast and colliding violently with the lower counterweights, improving the safety of counterweight installation and placement, and improving the safety and reliability of the tensioning device.

[0016] 2. In this utility model, through the set resistance distribution mechanism, when the counterweight moves downward along the mounting groove and comes into contact with each pair of two barrier plates and two stops, while the barrier plates rotate toward the inside of the mounting cavity, the two square plates will also overcome the elastic force of the second elastic element and slide downward along the receiving cavity, so that the resistance to the counterweight is distributed on the square plates and barrier plates, making the resistance to the counterweight more uniform. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a first structural schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the second structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the third structure of this utility model;

[0021] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 5 This is a partial structural schematic diagram of the present invention;

[0023] Figure 6 This is a partial structural diagram of the auxiliary stacking component in this utility model;

[0024] Figure 7 This is a schematic diagram of the second partial structure of the auxiliary stacking component in this utility model;

[0025] Figure 8 In this utility model Figure 6 Enlarged view of point A in the middle;

[0026] Figure 9In this utility model Figure 6 Enlarged view of point B in the middle;

[0027] Figure 10 In this utility model Figure 7 Enlarged diagram of point C in the middle.

[0028] In the diagram: 1. Fixed plate; 11. Support; 2. Limiting block; 3. Moving plate; 4. Fixed box; 41. Tensioning wheel; 5. Fixing strip; 6. Counterweight block; 61. Mounting groove; 62. Baffle; 63. Supporting strip; 7. Auxiliary stacking assembly; 71. Limiting post; 72. Mounting cavity; 73. Barrier plate; 74. Resistance adjustment mechanism; 741. Threaded rod; 742. Moving block; 743. First elastic element; 75. Resistance equalization mechanism; 751. Receiving cavity; 752. Square plate; 753. Second elastic element; 76. Stop block. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0030] Please refer to Figures 1-10 The high-speed tensioning device shown includes two fixed plates 1. Two pairs of limiting blocks 2 are fixedly connected to the front of the two fixed plates 1. Two movable plates 3 are symmetrically slidably connected to the adjacent sides of the two pairs of limiting blocks 2. A fixed box 4 is fixedly connected between the adjacent sides of the two movable plates 3. A tensioning wheel 41 is rotatably connected inside the fixed box 4. Two fixing strips 5 are symmetrically fixedly connected to the bottom of the fixed box 4. Two mounting grooves 61 are symmetrically formed on the adjacent sides of the two fixing strips 5. Two rectangular cavities are symmetrically formed on the front of the two fixing strips 5. Two baffles 62 are fixedly connected to the front of the two fixing strips 5 by bolts. Located directly in front of the two rectangular cavities and sealing them off, the front and rear sides of the two fixing strips 5 are symmetrically fixed with two support strips 63 by bolts. The bottom of the counterweight 6 at the bottommost side abuts against the top surface of the two support strips 63. Multiple counterweights 6 are stacked between the two mounting slots 61 from bottom to top. Two auxiliary stacking components 7 are symmetrically arranged in the two mounting slots 61. An upper limit plate 81 and a lower limit plate 82 are fixedly connected to the right side of the moving plate 3 on the right side. A limit switch 83 is fixedly connected to the front of the fixing plate 1. The limit switch 83 is located between the upper limit plate 81 and the lower limit plate 82.

[0031] The auxiliary stacking component 7 is used to increase resistance as the counterweight 6 slides down along the mounting slot 61;

[0032] A support 11 is fixedly connected between the back sides of the two fixed plates 1, and the bottom of the support 11 is fixedly connected to the bottom of the elevator shaft;

[0033] As the tensioning wheel 41 moves up and down until the limit switch 83 contacts the upper limit plate 81 or the lower limit plate 82, the limit switch 83 will be triggered, thereby opening the elevator speed limiting action to prevent the elevator from continuing to run in a dangerous situation.

[0034] Two through holes are symmetrically opened on the top of the fixed box 4. The two through holes are used to allow the elevator wire rope to pass into the fixed box 4 and be wound around the tensioning wheel 41.

[0035] refer to Figure 6 and 9 The auxiliary stacking assembly 7 includes a limiting post 71 fixedly connected to the bottom wall of the mounting groove 61. Multiple counterweights 6 are movably sleeved between two limiting posts 71. Two sets of mounting cavities 72 are symmetrically opened on the left and right sides of the limiting posts 71. Multiple mounting cavities 72 in each set are distributed equidistantly from bottom to top. Two sets of blocking plates 73 are symmetrically rotatably connected between the front and rear inner sidewalls of the two sets of mounting cavities 72 through a first rotating rod and a first torsion spring. Each pair of two blocking plates 73 are distributed in a figure-eight shape. The bottom ends of the two sets of blocking plates 73 extend to the outside of the mounting cavity 72.

[0036] Specifically, when the counterweight 6 moves downward along the limiting post 71, the two sets of blocking plates 73 can block and buffer the counterweight 6 under the elastic force of the first torsion spring. This can prevent the counterweight 6 from falling quickly and colliding with the lower counterweight 6 when it is stacked from the rectangular cavity into the mounting groove 61, thus ensuring that the stacking of the counterweight 6 can be carried out safely and smoothly, and effectively improving the safety and reliability of the tensioning device.

[0037] refer to Figures 5-10 The auxiliary stacking assembly 7 also includes a resistance adjustment mechanism 74 disposed on the limiting post 71.

[0038] Specifically, the resistance generated by the auxiliary stacking component 7 can be flexibly adjusted according to the weight of the counterweight 6, thereby ensuring that the auxiliary stacking component 7 can provide an appropriate amount of resistance to the counterweight 6 and ensuring that the installation and stacking operation of the counterweight 6 can be carried out safely and smoothly.

[0039] refer to Figure 7 and Figure 10The resistance adjustment mechanism 74 includes a threaded rod 741 rotatably connected to the top of the limiting post 71. The bottom end of the threaded rod 741 passes through each of the multiple mounting cavities 72 and is rotatably connected to the inner bottom wall of the lowest mounting cavity 72. The resistance adjustment mechanism 74 also includes multiple movable blocks 742 that are slidably connected between the front and rear inner walls of the multiple mounting cavities 72. The multiple movable blocks 742 are threaded onto the external thread surface of the threaded rod 741. Two first elastic elements 743 are symmetrically fixedly connected to the left and right sides of the movable blocks 742. The ends of the two first elastic elements 743 that are far apart can respectively abut against the sides of the two adjacent blocking plates 73 that are close to each other.

[0040] Specifically, by rotating the threaded rod 741, the two sets of moving blocks 742 can be moved up and down, thereby adjusting the distance between the first elastic element 743 and the side of the adjacent barrier plate 73. This allows for adjustment of the elastic resistance encountered by the barrier plate 73 when it rotates into the mounting cavity 72, making the adjustment of the resistance of the auxiliary stacking assembly 7 simple and convenient, and improving the convenience of the tensioning device.

[0041] refer to Figure 9 and Figure 10 The auxiliary stacking assembly 7 also includes a resistance equalization mechanism 75 disposed on the limiting post 71.

[0042] Specifically, it makes the resistance experienced by the counterweight 6 more uniform when stacked, and makes the installation and placement of the counterweight 6 smoother and more convenient.

[0043] refer to Figure 9 and Figure 10 The resistance distribution mechanism 75 includes two sets of receiving cavities 751 symmetrically opened on the opposite sides of two sets of barrier plates 73. Two sets of square plates 752 are symmetrically slidably connected in the two sets of receiving cavities 751 through guide rods. A second elastic element 753 is fixedly connected between the bottom of the square plate 752 and the inner side wall of the receiving cavity 751. Two sets of blocks 76 are symmetrically fixedly connected on the opposite sides of the two sets of barrier plates 73. The blocks 76 are perpendicular to the barrier plates 73.

[0044] Specifically, when the counterweight 6 moves downward along the mounting groove 61 and comes into contact with each pair of two baffle plates 73 and two stop blocks 76, while the baffle plates 73 rotate toward the interior of the mounting cavity 72, the two square plates 752 also overcome the elastic force of the second elastic element 753 and slide downward along the receiving cavity 751. This makes the resistance to the counterweight 6 distributed on the square plates 752 and the baffle plates 73, making the resistance to the counterweight 6 more uniform.

[0045] refer to Figure 9 The stop block 76 is rotatably connected to the bottom of the square plate 752 via the second rotating rod and the second torsion spring.

[0046] Specifically, this allows the counterweight 6 to pass more smoothly through each pair of two stops 76, ensuring that the installation and placement of the counterweight 6 can be carried out smoothly, and further improving the reliability and practicality of the tensioning device.

[0047] Working principle: When multiple counterweights 6 need to be installed, unscrew the bolts to remove the two baffles 62 from the rectangular cavity, and then place the multiple counterweights 6 into the two mounting slots 61 from the two rectangular cavities in sequence, so that the counterweights 6 are fitted between the two limiting posts 71.

[0048] As the counterweight 6 moves along the mounting groove 61, it sequentially presses against each pair of two baffle plates 73 and two stop blocks 76 from top to bottom. Simultaneously, as the baffle plates 73 overcome the elastic force of the first elastic element 743 and rotate towards the mounting cavity 72, the two square plates 752 also overcome the elastic force of the second elastic element 753 and slide downwards along the receiving cavity 751. This distributes the resistance to the counterweight 6 across the square plates 752 and the baffle plates 73, making the resistance to the counterweight 6 more uniform and providing a buffering effect. This prevents the counterweight 6 from rapidly falling and colliding with the lower counterweight 6 when stacking it from the rectangular cavity into the mounting groove 61, thus ensuring the safe and smooth stacking of the counterweight 6 and effectively improving the safety and reliability of the tensioning device.

[0049] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are 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 high-speed tensioning device, comprising two fixed plates (1), characterized in that: Two pairs of limiting blocks (2) are fixedly connected to the front of the two fixed plates (1). Two moving plates (3) are symmetrically slidably connected to the adjacent sides of the two pairs of limiting blocks (2). A fixed box (4) is fixedly connected between the adjacent sides of the two moving plates (3). A tensioning wheel (41) is rotatably connected inside the fixed box (4). Two fixing strips (5) are symmetrically fixedly connected to the bottom of the fixed box (4). Two mounting grooves (61) are symmetrically opened on the adjacent sides of the two fixing strips (5). Two rectangular cavities are symmetrically opened on the front of the two fixing strips (5). Two baffles (62) are detachably fixedly connected to the front of the two fixing strips (5). The two baffles (62) are located in front of the two rectangular cavities and block the two rectangular cavities respectively. The front and rear sides of the two fixing strips (5) are symmetrically fixedly connected to two support strips (63). Multiple counterweights (6) are stacked between the two mounting slots (61) from bottom to top. Two auxiliary stacking components (7) are symmetrically arranged in the two mounting slots (61). The right side of the moving plate (3) on the right side is fixedly connected to an upper limit plate (81) and a lower limit plate (82). The front of the fixing plate (1) is fixedly connected to a limit switch (83). The limit switch (83) is located between the upper limit plate (81) and the lower limit plate (82). The auxiliary stacking assembly (7) is used to increase resistance as the counterweight (6) slides down along the mounting groove (61).

2. The high-speed tensioning device according to claim 1, characterized in that: The auxiliary stacking assembly (7) includes a limiting post (71) fixedly connected to the bottom wall of the mounting groove (61). Multiple counterweights (6) are movably sleeved between two limiting posts (71). Two sets of mounting cavities (72) are symmetrically opened on the left and right sides of the limiting post (71). Multiple mounting cavities (72) in each set are equidistantly distributed from bottom to top. Two sets of blocking plates (73) are symmetrically rotatably connected between the front and rear inner walls of the two sets of mounting cavities (72) through a first rotating rod and a first torsion spring. Each pair of two blocking plates (73) are arranged in a figure-eight shape. The bottom ends of the two sets of blocking plates (73) extend to the outside of the mounting cavity (72).

3. The high-speed tensioning device according to claim 2, characterized in that: The auxiliary stacking assembly (7) also includes a resistance adjustment mechanism (74) provided on the limiting post (71).

4. The high-speed tensioning device according to claim 3, characterized in that: The resistance adjustment mechanism (74) includes a threaded rod (741) rotatably connected to the top of the limiting post (71). The bottom end of the threaded rod (741) passes through each of the multiple mounting cavities (72) and is rotatably connected to the inner bottom wall of the lowest mounting cavity (72). The resistance adjustment mechanism (74) also includes multiple movable blocks (742) that are slidably connected between the front and rear inner walls of the multiple mounting cavities (72). The multiple movable blocks (742) are threaded onto the external thread surface of the threaded rod (741). Two first elastic elements (743) are symmetrically fixedly connected to the left and right sides of the movable blocks (742). The ends of the two first elastic elements (743) that are far apart can respectively abut against the sides of the two adjacent blocking plates (73).

5. A high-speed tensioning device according to claim 4, characterized in that: The auxiliary stacking assembly (7) also includes a resistance equalization mechanism (75) provided on the limiting post (71).

6. A high-speed tensioning device according to claim 5, characterized in that: The resistance distribution mechanism (75) includes two sets of receiving cavities (751) symmetrically opened on the opposite sides of the two sets of barrier plates (73). Two sets of square plates (752) are symmetrically slidably connected in the two sets of receiving cavities (751) through guide rods. A second elastic element (753) is fixedly connected between the bottom of the square plate (752) and the inner side wall of the receiving cavity (751). Two sets of blocks (76) are symmetrically fixedly connected on the opposite sides of the two sets of barrier plates (73). The blocks (76) are perpendicular to the barrier plates (73).

7. A high-speed tensioning device according to claim 6, characterized in that: The stop block (76) is rotatably connected to the bottom of the square plate (752) via a second rotating rod and a second torsion spring.

Images