Elevator counterweight block jacking and limiting device

Abstract

The utility model discloses an elevator counterweight block jacking and limiting device, and relates to the technical field of elevator counterweight blocks. The device comprises a fixing plate, a first connecting plate is fixedly connected to the edge of one side of the top of the fixing plate in an axial symmetry mode, a positioning assembly used for fixing a counterweight block is rotationally connected to the interior of the top end of the first connecting plate, and a jacking assembly used for jacking the counterweight block is arranged in the middle of the top of the fixing plate; and springs are fixedly connected to the bottom of the top plate in an axial symmetry mode, and buffer pieces are arranged at the bottom ends of the springs. Through the arrangement of the positioning assembly, the positive and negative threaded rod can be rotated at the same time, so that the rotation of the positive and negative threaded rod drives the first U-shaped plate and the second U-shaped plate to move in opposite directions and clamp the two sides of the counterweight block, and meanwhile, the sawtooth plates arranged on the surfaces of the first U-shaped plate and the second U-shaped plate are attached to the side face of the counterweight block; therefore, the clamping stability of the counterweight blocks is improved, and mutual collision between the counterweight blocks is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of elevator counterweights, and in particular relates to a tightening and limiting device for elevator counterweights. Background Art

[0002] The elevator of the prior art refers to a permanent transportation device serving several specific floors in a building, whose car runs on at least two rows of rigid tracks perpendicular to the horizontal plane or with an inclination angle of less than fifteen degrees to the plumb line.

[0003] A Chinese patent with publication number CN210457089U discloses a novel counterweight block for elevators, including a counterweight frame and a track groove. The upper and lower end faces of the counterweight frame are bolted with track grooves on the left and right sides at a horizontal horizontal position. The top end face of the counterweight frame is evenly plugged with a fixed plug rod at the center through mutual engagement between threads. A steel cable is embedded in the interior of the fixed plug rod at a vertical position. A plug board is provided above the fixed plug rod, and the plug board is sleeved with the steel cable. An extension piece is provided at the bottom end face of the counterweight frame at the center of the end face. The extension piece is fixedly connected to the bottom end face of the counterweight frame through an integral casting mold. Limiting grooves are provided at the left and right sides of the counterweight frame, which can effectively avoid the safety hazard of the weight block falling off during the downward movement after the nut is loosened, which can greatly reduce the failure rate and improve the safety factor.

[0004] However, when the counterweights move up and down with the elevator, they will shake and collide with each other, increasing certain safety hazards.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a tightening and limiting device for an elevator counterweight, which solves the problem proposed in the above background technology that when the counterweights move up and down with the elevator, the counterweights will shake and collide with each other, increasing certain safety hazards.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0008] A tightening and limiting device for an elevator counterweight comprises: a fixed plate, an edge on one side of the top of the fixed plate being axially symmetrically fixedly connected to a first connecting plate, an internal rotationally connected to the top of the first connecting plate being used to fix the counterweight, and a tightening assembly for tightening the counterweight being provided in the middle of the top of the fixed plate.

[0009] Optionally, the positioning assembly includes a forward and reverse threaded rod rotatably connected to the top of the first connecting plate, the surface of one end of the forward and reverse threaded rod is provided with a first U-shaped plate, the surface of the other end of the forward and reverse threaded rod is provided with a second U-shaped plate, and the surfaces of the first U-shaped plate and the second U-shaped plate are both provided with serrated plates for increasing friction.

[0010] Optionally, the first U-shaped plate and the second U-shaped plate are internally slidably connected to a limiting rod on one side, a second connecting plate is provided on the surface of the limiting rod, and the bottom of the second connecting plate is fixedly connected to the edge on the other side of the top of the fixed plate.

[0011] Optionally, the tightening assembly includes a first rotating shaft rotatably connected to the middle part of the top of the fixed plate, a driving motor for driving the first rotating shaft to rotate is arranged on the top of the first rotating shaft, a belt is sleeved on the surface of the first rotating shaft, a second rotating shaft is sleeved on both sides of the belt, a threaded screw is arranged inside the second rotating shaft, and a top plate is arranged at the bottom of the threaded screw.

[0012] Optionally, a spring is fixedly connected to the bottom of the top plate in an axisymmetric manner, and a buffer sheet is provided at the bottom end of the spring.

[0013] Optionally, mounting frames are axially symmetrically arranged on both sides of the fixing plate, and rollers are arranged inside the mounting frames.

[0014] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below at the same time:

[0015] 1. Through the arrangement of the positioning component and the tightening component, the driving motor can be connected to an external power supply, so that it drives the belt to rotate through the first rotating shaft, and then drives the second rotating shaft to rotate, which can drive the threaded screw to drive the top plate to move downward until the counterweight block is tightened, thereby improving the stability of the counterweight block. At the same time, the positive and negative threaded rods can be rotated, so that the rotation of the positive and negative threaded rods drives the first U-shaped plate and the second U-shaped plate to move in relative directions and clamp them to both sides of the counterweight block. At the same time, the serrated plates arranged on the surfaces of the first U-shaped plate and the second U-shaped plate fit the sides of the counterweight block, thereby increasing the stability of the clamping of the counterweight block and avoiding collision between the counterweight blocks.

[0016] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0018] In the figure:

[0019] Figure 1 It is a schematic diagram of the overall structure;

[0020] Figure 2 is a schematic diagram of the fixed plate structure;

[0021] Figure 3 It is a schematic diagram of the positioning component structure;

[0022] Figure 4 It is a schematic diagram of the structure of the tightening component.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Fixed plate; 2. First connecting plate; 3. Positioning assembly; 31. Positive and negative threaded rods; 32. First U-shaped plate; 33. Second U-shaped plate; 34. Serrated plate; 4. Tightening assembly; 41. First rotating shaft; 42. Driving motor; 43. Belt; 44. Second rotating shaft; 45. Threaded screw; 46. Top plate; 5. Limiting rod; 6. Second connecting plate; 7. Spring.

[0025] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0026] The utility model will now be further described in detail with reference to the accompanying drawings.

[0027] See also Figure 1-4 As shown, in this embodiment, a tightening and limiting device for a counterweight of an elevator is provided, comprising: a fixed plate 1, a first connecting plate 2 is axially symmetrically fixedly connected to the edge of one side of the top of the fixed plate 1, a positioning component 3 for fixing the counterweight is internally rotatably connected to the top of the first connecting plate 2, a tightening component 4 for tightening the counterweight is provided in the middle of the top of the fixed plate 1, a driving motor 42 can be connected to an external power supply, so that it drives the belt 43 to rotate through the first rotating shaft 41, and then drives the second rotating shaft 44 to rotate, and the threaded screw 45 can be driven to drive the top plate 46 to move downward until the counterweight is tightened, thereby improving the stability of the counterweight.

[0028] One aspect of the application of this embodiment is: the forward and reverse threaded rod 31 can be rotated, so that the rotation of the forward and reverse threaded rod 31 drives the first U-shaped plate 32 and the second U-shaped plate 33 to move in relative directions and clamp the two sides of the counterweight block, and at the same time, the serrated plates 34 arranged on the surface of the first U-shaped plate 32 and the second U-shaped plate 33 fit the side of the counterweight block, thereby increasing the stability of the clamping of the counterweight block and avoiding collision between the counterweight blocks. It should be noted that all electrical equipment involved in this application can be powered by batteries or external power supplies.

[0029] like Figure 1 As shown, the bottom of the top plate 46 of this embodiment is axially symmetrically fixedly connected with a spring 7, a buffer sheet is provided at the bottom end of the spring 7, mounting frames are axially symmetrically provided on both sides of the fixed plate 1, and rollers are provided inside the mounting frames. The arrangement of the spring 7 and the buffer sheet allows a certain buffer to be provided between the counterweight block and the top plate 46 to avoid excessive tightening force that would cause damage to the counterweight block.

[0030] Embodiment 1:

[0031] In this embodiment, if Figure 3 As shown, the positioning assembly 3 includes a forward and reverse threaded rod 31 rotatably connected to the top of the first connecting plate 2, a first U-shaped plate 32 is provided on the surface of one end of the forward and reverse threaded rod 31, and a second U-shaped plate 33 is provided on the surface of the other end of the forward and reverse threaded rod 31, and a serrated plate 34 is provided on the surface of the first U-shaped plate 32 and the second U-shaped plate 33 for increasing friction. The first U-shaped plate 32 and the second U-shaped plate 33 are internally slidably connected to one side of the first U-shaped plate 32 and the second U-shaped plate 33, and a second connecting plate 6 is provided on the surface of the limiting rod 5, and the bottom of the second connecting plate 6 is fixedly connected to the edge of the other side of the top of the fixed plate 1. The forward and reverse threaded rod 31 can be rotated so that the rotation of the forward and reverse threaded rod 31 drives the first U-shaped plate 32 and the second U-shaped plate 33 to move in relative directions and clamp them on both sides of the counterweight block, and at the same time, the serrated plates 34 provided on the surfaces of the first U-shaped plate 32 and the second U-shaped plate 33 fit the side of the counterweight block, thereby increasing the stability of the clamping of the counterweight block and avoiding collision between the counterweight blocks.

[0032] Embodiment 2:

[0033] In this embodiment, if Figure 4 As shown, the tightening assembly 4 includes a first rotating shaft 41 rotatably connected to the middle part of the top of the fixed plate 1, and a driving motor 42 for driving the first rotating shaft 41 to rotate is arranged on the top of the first rotating shaft 41, and a belt 43 is sleeved on the surface of the first rotating shaft 41, and a second rotating shaft 44 is sleeved on both sides of the inside of the belt 43, and a threaded screw 45 is arranged inside the second rotating shaft 44, and a top plate 46 is arranged at the bottom of the threaded screw 45. The driving motor 42 can be connected to an external power source, so that it drives the belt 43 to rotate through the first rotating shaft 41, and then drives the second rotating shaft 44 to rotate, and the threaded screw 45 can be driven to drive the top plate 46 to move downward until the counterweight block is tightened, thereby improving the stability of the counterweight block.

[0034] The present invention is not limited to the above-mentioned implementation modes. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the protection scope of the present invention. The technology, shape, and structure that are not described in detail in the present invention are all known technologies.

Claims

1. An elevator counterweight tightening and limiting device, characterized in that: include: A fixed plate (1), wherein a first connecting plate (2) is fixedly connected to the edge of one side of the top of the fixed plate (1) in an axisymmetric manner, a positioning assembly (3) for fixing a counterweight block is rotatably connected to the inside of the top of the first connecting plate (2), and a tightening assembly (4) for tightening the counterweight block is arranged in the middle of the top of the fixed plate (1).

2. The elevator counterweight tightening and limiting device according to claim 1, characterized in that: The positioning assembly (3) comprises a forward and reverse threaded rod (31) rotatably connected to the interior of the top end of the first connecting plate (2); a first U-shaped plate (32) is provided on the surface of one end of the forward and reverse threaded rod (31); a second U-shaped plate (33) is provided on the surface of the other end of the forward and reverse threaded rod (31); and a serrated plate (34) for increasing friction is provided on the surfaces of the first U-shaped plate (32) and the second U-shaped plate (33).

3. The elevator counterweight tightening and limiting device according to claim 2, characterized in that: A limiting rod (5) is slidably connected to the inside of one side of the first U-shaped plate (32) and the second U-shaped plate (33), a second connecting plate (6) is provided on the surface of the limiting rod (5), and the bottom of the second connecting plate (6) is fixedly connected to the edge of the other side of the top of the fixed plate (1).

4. The elevator counterweight tightening and limiting device according to claim 1, characterized in that: The clamping assembly (4) comprises a first rotating shaft (41) rotatably connected to the middle of the top of the fixing plate (1); a driving motor (42) for driving the first rotating shaft (41) to rotate is arranged at the top; a belt (43) is sleeved on the surface of the first rotating shaft (41); a second rotating shaft (44) is sleeved on both sides of the belt (43); a threaded screw (45) is arranged inside the second rotating shaft (44); and a top plate (46) is arranged at the bottom of the threaded screw (45).

5. The elevator counterweight tightening and limiting device according to claim 4, characterized in that: The bottom of the top plate (46) is fixedly connected to a spring (7) in an axisymmetric manner, and a buffer sheet is provided at the bottom end of the spring (7).

6. The elevator counterweight tightening and limiting device according to claim 1, characterized in that: Mounting frames are axially symmetrically arranged on both sides of the fixing plate (1), and rollers are arranged inside the mounting frames.

Images