Elevator counterweight mechanism

Abstract

The utility model provides an elevator counterweight mechanism which comprises a counterweight housing and a plurality of groups of counterweight blocks stacked on the counterweight housing, guide shoes are distributed at the outer end of the counterweight housing corresponding to guide rails, the counterweight housing is slidably mounted on the guide rails through the guide shoes, and a diversion sheave connected with a steel cable is arranged at the upper end of the counterweight housing. Limiting rails are installed in the middles of the two sides of the frame, the counterweight blocks are provided with corresponding limiting grooves corresponding to the limiting rails, the counterweight blocks are vertically arranged on the frame in a stacked mode, the counterweight blocks are sequentially arranged in the limiting rails in an abutting mode through elastic pressing pieces distributed in the limiting rails, the counterweight blocks are attached to the first elastic plate and the second elastic plate, the placing stability of the counterweight blocks is improved, and the service life of the counterweight blocks is prolonged. And noise generated by collision between the counterweight block and the frame due to shaking is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to an elevator counterweight mechanism. Background Art

[0002] The elevator counterweight, also known as the weight balancing system, is a crucial component of the elevator traction system. It balances the weight of the car and ensures proper traction transmission. The counterweight is located on the other side of the car and is connected to the car roof or floor via traction wire ropes.

[0003] Existing counterweight racks generally stack counterweights by using a frame with a U-shaped groove, and a pressure weight bracket is installed on the upper end of the frame. The pressure weight bracket is clamped and installed on the edge of the frame and is supported on the upper end of the counterweight through a clamping plate. For example, the patent number is: CN114148869A; the pressure weight bracket is clamped and installed on the edge of the frame, which is prone to loosening under the inertial impact of the counterweight, and the disassembly and assembly of the pressure weight bracket is relatively cumbersome. The two sides of the counterweight are built into the U-shaped groove of the frame, and there is a large gap between the counterweight and the inner groove wall of the frame, which can easily cause the counterweight to shake and generate noise, causing instability in the counterweight system. Utility Model Content

[0004] The technical problem solved by the present utility model is to provide an elevator counterweight mechanism capable of stably fixing a counterweight block, so as to solve the problems raised in the above-mentioned background technology.

[0005] The technical problem solved by the utility model is achieved by adopting the following technical solution: an elevator counterweight mechanism, comprising a counterweight frame and a plurality of counterweight blocks stacked on the counterweight frame, wherein the outer end of the counterweight frame is provided with guide shoes corresponding to the guide rails, and is slidably mounted on the guide rails through the guide shoes, and the upper end of the counterweight frame is provided with a return rope pulley connected to the steel cable;

[0006] The lower end of the counterweight frame is a frame for installing the counterweight block, and slide rails are respectively arranged in parallel on both sides of the frame. A limit rail is protruded and installed between the two sets of slide rails. Limit grooves are provided on both sides of the counterweight block and are sleeved on the outer ends of the limit rails so that the counterweight blocks can be vertically stacked and installed on the frame. A clamping mechanism is provided on the upper end of the frame and is slidably installed on the slide rails. The clamping mechanism includes a table plate slidably installed on the slide rails and a locking assembly arranged on the upper end of the table plate, so as to be fixed to the corresponding position of the slide rails through the locking assembly. A pressure plate is adjustably installed on the lower end of the table plate to press against the upper end of the counterweight block through the pressure plate to prevent the counterweight block from jumping.

[0007] As a further solution of the utility model:

[0008] Slide blocks are respectively provided on the four sides of the table corresponding to the slide rails, and are slidably installed on the slide rails through the slide blocks. Locking holes are distributed in the middle of the slide rails corresponding to the locking components to cooperate with the locking components to fix the clamping mechanism.

[0009] As a further solution of the utility model:

[0010] The locking assembly includes a guide sleeve fixedly mounted around the upper end of the table plate, an insertion rod is slidably mounted in the guide sleeve, a driving screw is rotatably mounted in the middle of the table plate, the spiral directions of the two sides of the driving screw are opposite, and screw sleeves are respectively mounted on both sides of the driving screw. A rotary handle is provided at the outer end of the driving screw to drive the screw sleeves to move synchronously in opposite directions. A connecting rod is rotatably mounted on one side of the insertion rod and is rotatably connected to the outer side of the screw sleeve through the connecting rod. The driving screw drives the screw sleeve to move back and forth, thereby pushing the insertion rod to telescopically move in the guide sleeve through the connecting rod, so that the insertion rod is inserted into the corresponding locking hole to fix the table plate.

[0011] As a further solution of the utility model:

[0012] A plurality of adjusting screws are fixedly provided on the upper end of the pressure plate, and a sleeve is installed on the table plate corresponding to the rotation of the adjusting screw. A nut is fixedly installed on the sleeve and is threadedly connected to the adjusting screw through the nut, thereby controlling the lifting and lowering adjustment of the adjusting screw to drive the pressure plate to descend and rest on the counterweight block.

[0013] As a further solution of the utility model:

[0014] The limiting rail is a hollow structure, with a spring-pressure tube inserted and installed in the limiting rail. Several groups of spring-pressure parts are distributed on the spring-pressure tube. Several limiting holes are distributed on both sides of the limiting rail to allow the spring-pressure parts to pass through the limiting holes and elastically connect with the counterweight block, thereby avoiding a large gap between the counterweight block and the limiting rail, which causes shaking, collision and noise.

[0015] As a further solution of the utility model:

[0016] The spring-pressing member includes a first spring plate and a second spring plate slidably mounted on both sides of the spring-pressing tube, and baffles are fixedly mounted on opposite sides of the first spring plate and the second spring plate respectively. A return spring is provided between the first spring plate and the second spring plate to push the first spring plate and the second spring plate to move outward, and the first spring plate and the second spring plate pass through the limiting hole. The outer ends of the first spring plate and the second spring plate are arc-shaped structures to slide and fit with the counterweight block, so that the counterweight block fits on the first spring plate and the second spring plate on both sides of the limiting rail, eliminating the gap between the limiting rail and the counterweight block, and improving the stability of the counterweight block.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: limiting rails are installed in the middle of both sides of the frame, and corresponding limiting grooves are provided on the corresponding limiting rails of the counterweight blocks, so that the counterweight blocks are vertically stacked on the frame, and the distributed spring-pressure parts in the limiting rails press against the counterweight blocks in turn, so that the counterweight blocks are fitted with the first spring plate and the second spring plate, thereby improving the stability of the placement of the counterweight blocks and avoiding the counterweight blocks from shaking and colliding with the frame to generate noise.

[0018] The tabletop is slidably mounted on the slider and can be slid to the upper end, allowing the counterweight to be installed from the upper end of the limit rail. After installation, the tabletop can be slid to the corresponding position, and the driving screw is used to push the surrounding rods into the corresponding locking holes to secure the tabletop. The nut on the upper end of the tabletop is then rotated to allow the adjusting screw to drive the pressure plate down, thereby firmly pressing the upper end of the counterweight. The device is simple and convenient to operate. The rods are inserted into the locking holes to stably secure the tabletop. The pressure plate is then lowered to press against the counterweight, eliminating the gap between the counterweight and the pressure plate, preventing the counterweight from bouncing up and down and improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 for Figure 1 A in the middle is an enlarged structural diagram;

[0021] Figure 3 This is a schematic diagram of the structure of the spring-pressed tube of the present utility model;

[0022] Figure 4 for Figure 3 The enlarged structural diagram at B in the middle;

[0023] Markings in the figure: 1. Counterweight frame; 2. Counterweight block; 3. Table; 4. Adjusting screw; 5. Spring pressure tube; 11. Guide shoe; 12. Anti-rope pulley; 13. Frame; 14. Slide rail; 15. Limit rail; 16. Limit groove; 31. Pressure plate; 32. Slider; 33. Locking hole; 34. Guide sleeve; 35. Insert rod; 36. Drive screw; 37. Screw sleeve; 38. Rotary handle; 39. Connecting rod; 41. Sleeve; 42. Nut; 51. First spring plate; 52. Second spring plate; 53. Baffle; 54. Return spring. DETAILED DESCRIPTION

[0024] In order to make the technical means for realizing the present invention, the creative features, the objectives and the effects thereof easier to understand, the present invention is further described below with reference to specific illustrations.

[0025] like Figures 1 to 4 As shown,

[0026] This embodiment provides an elevator counterweight mechanism, comprising a counterweight frame 1 and a plurality of counterweight blocks 2 stacked on the counterweight frame 1. Guide shoes 11 are provided at the outer ends of the counterweight frame 1 corresponding to guide rails, so that the counterweight frame 1 is slidably mounted on the guide rails via the guide shoes 11. A return pulley 12 connected to a steel cable is provided at the upper end of the counterweight frame 1.

[0027] The lower end of the counterweight frame 1 is a frame 13 for installing the counterweight block 2. Slide rails 14 are respectively arranged in parallel on both sides of the frame 13. A limiting rail 15 is protruded and installed between the two sets of slide rails 14. Limiting grooves 16 are provided on both sides of the counterweight block 2 and are sleeved on the outer ends of the limiting rails 15, so that the counterweight block 2 can be vertically stacked and installed on the frame 13. The upper end of the frame 13 is provided with a clamping mechanism slidably mounted on the slide rails 14. The clamping mechanism includes a table plate 3 slidably mounted on the slide rails 14 and a locking assembly arranged at the upper end of the table plate 3, so as to be fixed to the corresponding position of the slide rails 14 through the locking assembly. The lower end of the table plate 3 is adjustably installed with a pressure plate 31, so that the pressure plate 31 can be pressed against the upper end of the counterweight block 2 to prevent the counterweight block 2 from jumping.

[0028] In this embodiment, sliders 32 are provided on the four sides of the table 3 corresponding to the slide rails 14, and are slidably installed on the slide rails 14 through the sliders 32. Locking holes 33 are distributed in the middle of the slide rails 14 corresponding to the locking components to cooperate with the locking components to fix the clamping mechanism.

[0029] In this embodiment, the locking assembly includes a guide sleeve 34 fixedly mounted around the upper end of the table 3, an insertion rod 35 is slidably mounted in the guide sleeve 34, and a driving screw 36 is rotatably mounted in the middle of the table 3. The spiral directions of the two sides of the driving screw 36 are opposite, and screw sleeves 37 are respectively mounted on both sides of the driving screw 36. The outer end of the driving screw 36 is provided with a rotary handle 38 to drive the screw sleeve 37 to move synchronously in the same or opposite directions. A connecting rod 39 is rotatably mounted on one side of the insertion rod 35, and is rotatably connected to the outer side of the screw sleeve 37 through the connecting rod 39. The driving screw 36 drives the screw sleeve 37 to move back and forth, thereby pushing the insertion rod 35 to telescopically move in the guide sleeve 34 through the connecting rod 39, so that the insertion rod 35 is inserted into the corresponding locking hole 33 to fix the table 3.

[0030] A plurality of adjusting screws 4 are fixedly provided on the upper end of the pressure plate 31, and a sleeve 41 is rotatably installed on the table 3 corresponding to the adjusting screw 4. A nut 42 is fixedly installed on the sleeve 41, and is threadedly connected to the adjusting screw 4 through the nut 42, thereby controlling the lifting and lowering adjustment of the adjusting screw 4 to drive the pressure plate 31 to descend and rest on the counterweight block 2.

[0031] In this embodiment, the limiting rail 15 is a hollow structure, and a spring-pressing tube 5 is inserted and installed in the limiting rail 15. Several groups of spring-pressing parts are distributed on the spring-pressing tube 5. Several limiting holes are distributed on both sides of the limiting rail 15 to allow the spring-pressing parts to pass through the limiting holes and elastically connect with the counterweight block 2, thereby avoiding a large gap between the counterweight block 2 and the limiting rail 15, which causes shaking and collision to generate noise.

[0032] The spring-pressing member includes a first spring plate 51 and a second spring plate 52 slidably mounted on both sides of the spring-pressing tube 5, and a baffle 53 is fixedly mounted on the opposite sides of the first spring plate 51 and the second spring plate 52, and a return spring 54 is provided between the first spring plate 51 and the second spring plate 52 to push the first spring plate 51 and the second spring plate 52 to move outward, and the first spring plate 51 and the second spring plate 52 pass through the limiting hole, and the outer ends of the first spring plate 51 and the second spring plate 52 are arc-shaped structures to slide and fit with the counterweight block 2, so that the counterweight block 2 fits on the first spring plate 51 and the second spring plate 52 on both sides of the limiting rail 15, eliminating the gap between the counterweight block 2 and the limiting rail 15, and improving the stability of the placement of the counterweight block 2.

[0033] The working principle of the present invention is as follows: limiting rails 15 are installed in the middle of both sides of the frame 13, and corresponding limiting grooves are provided in the corresponding limiting rails 15 of the counterweight blocks 2, so that the counterweight blocks 2 are vertically stacked on the frame 13, and the distributed elastic pressure members in the limiting rails 15 are used to press against the counterweight blocks 2 in turn, so that the counterweight blocks 2 are fitted with the first elastic plate 51 and the second elastic plate 52, thereby improving the stability of the placement of the counterweight blocks 2 and preventing the counterweight blocks 2 from shaking and colliding with the frame 13 to generate noise.

[0034] The tabletop 3 is slidably mounted on the slider 32 and can be slid to the upper end, thereby allowing the counterweight 2 to be installed from the upper end of the limiting rail 15. After installation is completed, the tabletop 3 can be slid to the corresponding position, and the driving screw 36 is used to push the surrounding insertion rods 35 into the corresponding locking holes 33 to fix the tabletop 3. The nut 42 at the upper end of the tabletop 3 is then rotated to allow the adjusting screw 4 to drive the pressure plate 31 to descend, thereby firmly pressing the upper end of the counterweight 2. The device is simple and convenient to operate. The insertion rod 35 is inserted into the locking hole 33 to stably fix the tabletop 3. The pressure plate 31 is then lowered and pressed against the counterweight 2, eliminating the gap between the counterweight 2 and the pressure plate 31, preventing the counterweight 2 from bouncing up and down, and improving stability.

[0035] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, which fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents. It should be noted that, in this document, if there are relational terms such as first and second, etc., they are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article, or device. Without further constraints, an element defined by the phrase "comprises a..." does not preclude the existence of additional identical elements in the process, method, article or apparatus that includes the element.

Claims

1. An elevator counterweight mechanism, comprising a counterweight frame and a plurality of counterweight blocks stacked on the counterweight frame, wherein guide shoes are provided at the outer ends of the counterweight frame corresponding to guide rails so as to be slidably mounted on the guide rails via the guide shoes, and a return pulley connected to a steel cable is provided at the upper end of the counterweight frame, characterized in that: The lower end of the counterweight frame is a frame for installing the counterweight block, and slide rails are respectively arranged in parallel on both sides of the frame. A limit rail is protruded and installed between the two sets of slide rails. Limit grooves are provided on both sides of the counterweight block and are sleeved on the outer ends of the limit rails so that the counterweight blocks can be vertically stacked and installed on the frame. A clamping mechanism is provided at the upper end of the frame and is slidably installed on the slide rails. The clamping mechanism includes a table plate slidably installed on the slide rails and a locking assembly arranged at the upper end of the table plate, so as to be fixed to the corresponding position of the slide rails through the locking assembly. A pressure plate is adjustably installed at the lower end of the table plate to press against the upper end of the counterweight block through the pressure plate.

2. An elevator counterweight mechanism according to claim 1, characterized in that: Slide blocks are respectively provided on the four sides of the table corresponding to the slide rails, and are slidably installed on the slide rails through the slide blocks. Locking holes are distributed in the middle of the slide rails corresponding to the locking components to cooperate with the locking components to fix the clamping mechanism.

3. An elevator counterweight mechanism according to claim 2, characterized in that: The locking assembly includes a guide sleeve fixedly mounted around the upper end of the table plate, an insertion rod is slidably mounted in the guide sleeve, a driving screw is rotatably mounted in the middle of the table plate, the spiral directions of the two sides of the driving screw are opposite, and screw sleeves are respectively mounted on both sides of the driving screw. A rotary handle is provided at the outer end of the driving screw to drive the screw sleeves to move synchronously in opposite directions. A connecting rod is rotatably mounted on one side of the insertion rod and is rotatably connected to the outer side of the screw sleeve through the connecting rod. The driving screw drives the screw sleeve to move back and forth, thereby pushing the insertion rod to telescopically move in the guide sleeve through the connecting rod, so that the insertion rod is inserted into the corresponding locking hole to fix the table plate.

4. An elevator counterweight mechanism according to claim 3, characterized in that: A plurality of adjusting screws are fixedly provided on the upper end of the pressing plate, and a sleeve is installed on the table corresponding to the rotation of the adjusting screw. A nut is fixed on the sleeve and is threadedly connected to the adjusting screw through the nut, thereby controlling the lifting and lowering adjustment of the adjusting screw.

5. The elevator counterweight mechanism according to claim 1, characterized in that: The limiting rail is a hollow structure, in which a spring-pressing tube is inserted and installed, and a plurality of spring-pressing parts are distributed on the spring-pressing tube. A plurality of limiting holes are distributed on both sides of the limiting rail to allow the spring-pressing parts to pass through the limiting holes and be elastically connected to the counterweight block.

6. An elevator counterweight mechanism according to claim 5, characterized in that: The spring-pressing member includes a first spring plate and a second spring plate slidably mounted on both sides of the spring-pressing tube, and baffles are fixedly mounted on opposite sides of the first spring plate and the second spring plate respectively. A return spring is provided between the first spring plate and the second spring plate to push the first spring plate and the second spring plate to move outward, and the first spring plate and the second spring plate pass through the limiting hole. The outer ends of the first spring plate and the second spring plate are arc-shaped structures to slide and fit with the counterweight block, so that the counterweight block fits on the first spring plate and the second spring plate on both sides of the limiting rail.

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