Vertical spring speed limiter tensioning device

Abstract

The utility model discloses a vertical type spring speed governor tensioning device which comprises a bottom plate and a supporting frame, guide sleeves and threaded columns are fixedly installed at the four corners of the top of the bottom plate, the threaded columns are located in the guide sleeves, turnups are formed on the two sides of the lower end of the supporting frame, the turnups are arranged on the guide sleeves in a sliding and sleeved mode, springs are arranged on the guide sleeves in a sleeved mode, and the springs are arranged on the supporting frame in a sleeved mode. The bottom of the spring is pressed on the turned-over edge, the upper end of the threaded column is sleeved with a gasket, a nut used for limiting the gasket on the threaded column is installed at the upper end of the threaded column in a threaded mode, the upper end of the spring abuts against the bottom of the gasket, a rope wheel is rotatably installed in the supporting frame, and the bottom plate is fixed to a bottom pit of an elevator shaft through an installation piece. The four springs with the guide sleeves are used for replacing a traditional heavy block to provide tensioning force, the overall weight of the tensioning device is reduced, the manufacturing cost is reduced, the occupied space is reduced, after the self weight is reduced, the tensioning device can only be packaged and transported through a wooden box originally but can be packaged and transported through a paper box now, and the packaging cost is remarkably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator accessories, in particular to a vertical spring speed limiter tensioning device. Background Art

[0002] The tensioning device of an elevator speed limiter is an important part of the elevator safety protection system. Its main function is to ensure that there is sufficient friction between the speed limit rope and the speed limit rope wheel, so as to ensure that the speed limit wheel is synchronized with the running speed of the elevator, thereby controlling the running speed of the elevator and ensuring the safety of passengers.

[0003] Most of the existing vertical tensioning uses steel plates and cast iron to provide the tensioning force, which makes the material cost account for a large proportion, and the self-weight is large, which will increase the transportation cost and is not easy to handle;

[0004] Some manufacturers use composite materials. After mixing materials similar to heavy iron ore and cement and pouring them into a metal shell to make composite tensioning, although the material cost is reduced, the volume will increase significantly, resulting in a reduction in transportation efficiency. Moreover, the production of composite tensioning itself will cause pollution to the working environment and belongs to harmful operations;

[0005] Moreover, during installation, it needs to be installed on the guide rail through a cross arm and a pressing plate, and the installation method is complex and not easy to operate.

[0006] Therefore, a vertical spring speed limiter tensioning device is proposed. Content of the Utility Model

[0007] The purpose of the utility model is to provide a vertical spring speed limiter tensioning device, thereby solving or at least alleviating one or more of the above problems and other problems existing in the prior art.

[0008] To achieve the above purpose, the main technical solutions adopted by the utility model include:

[0009] A vertical spring speed limiter tensioning device, including a bottom plate and a support frame. Four corners of the top of the bottom plate are fixedly installed with guide sleeves and threaded columns. The threaded columns are located inside the guide sleeves. Flanges are formed on both sides of the lower end of the support frame. The flanges are slidably sleeved on the guide sleeves. Springs are sleeved on the guide sleeves. The bottom of the springs presses on the flanges. Gaskets are sleeved on the upper ends of the threaded columns. Nuts are threadedly installed on the upper ends of the threaded columns for limiting the gaskets on the threaded columns. The upper ends of the springs abut against the bottoms of the gaskets. A rope wheel is rotatably installed inside the support frame. The bottom plate is fixed in the bottom pit of the elevator shaft through a mounting member.

[0010] In the vertical spring speed limiter tensioning device according to the present utility model, a switch striker plate is fixedly installed at the top of the bottom plate. The upper end of the switch striker plate slidably penetrates through the flanging and is disposed on one side of the support frame. A switch is fixedly installed on one side of the support frame. Upper limit protrusions and lower limit protrusions are respectively disposed at the upper end and the lower end of the switch striker plate.

[0011] In the vertical spring speed limiter tensioning device according to the present utility model, a protective cover for protecting the rope pulley is fixedly installed on the support frame. Rope passing holes for passing the rope are opened at both ends of the protective cover.

[0012] In the vertical spring speed limiter tensioning device according to the present utility model, the mounting member includes a mounting base, and the mounting base is fixedly connected to the bottom plate through two pin shafts.

[0013] In the vertical spring speed limiter tensioning device according to the present utility model, the mounting base is fixed on the bottom pit floor of the elevator shaft through expansion bolts.

[0014] In the vertical spring speed limiter tensioning device according to the present utility model, a cushion block is further included, and the cushion block can be padded between the bottom of the support frame and the top of the bottom plate during installation.

[0015] The present utility model at least has the following beneficial effects:

[0016] The present utility model uses four springs with guide sleeves to replace the traditional heavy blocks to provide the tensioning force, reducing the overall weight of the tensioning device, reducing the manufacturing cost, reducing the occupied space. After the self-weight is reduced, it could only be transported in wooden boxes before, but now it can be changed to be transported in cardboard boxes, and the packaging cost is significantly reduced. At the same time, because of the spring structure, the load can be adjusted by adjusting or replacing the springs, and the application range is more flexible. The bottom plate is directly installed on the bottom pit floor through the mounting base, and there is no need to rely on the cross arm and the pressing plate on the guide rail as in the traditional way. Only one person can complete the assembly, greatly improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0018] Figure 1 is a structural schematic diagram of the present utility model;

[0019] Figure 2 is a partial exploded structural schematic diagram of the present utility model;

[0020] Figure 3This is a partial structural schematic diagram of the present utility model.

[0021] Explanation of the reference numerals in the drawings:

[0022] 1. Bottom plate; 2. Installation base; 201. Expansion bolt; 202. Pin shaft; 3. Guide sleeve; 4. Threaded column; 401. Nut; 402. Gasket; 5. Spring; 6. Support frame; 601. Flange; 7. Protective cover; 701. Rope-passing hole; 8. Switch; 9. Switch hitting plate; 901. Upper limit projection; 902. Lower limit projection; 10. Spacer block; 11. Rope pulley. Specific embodiments

[0023] The following will cooperate with the drawings and embodiments to detail the implementation manner of the present application, so as to fully understand how the present application uses technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0024] Please refer to Figures 1 to 3 As shown, this embodiment provides a vertical spring speed limiter tensioning device, including a vertical spring speed limiter tensioning device, which is characterized in that it includes a bottom plate 1 and a support frame 6. Guide sleeves 3 and threaded columns 4 are fixedly installed at the four corners of the top of the bottom plate 1. The threaded column 4 is located inside the guide sleeve 3. Flanges 601 are formed on both sides of the lower end of the support frame 6. The flange 601 is slidably sleeved on the guide sleeve 3. A spring 5 is sleeved on the guide sleeve 3. The bottom of the spring 5 presses on the flange 601. A gasket 402 is sleeved on the upper end of the threaded column 4. A nut 401 for limiting the gasket 402 on the threaded column 4 is threadedly installed at the upper end of the threaded column 4. The upper end of the spring 5 abuts against the bottom of the gasket 402. A rope pulley 11 is rotatably installed inside the support frame 6. A switch hitting plate 9 is fixedly installed on the top of the bottom plate 1. The upper end of the switch hitting plate 9 slidably penetrates through the flange 601 and is arranged on one side of the support frame 6. A switch 8 is fixedly installed on one side of the support frame 6. Upper limit projections 901 and lower limit projections 902 are respectively arranged at the upper end and the lower end of the switch hitting plate 9. The bottom plate 1 is fixed in the bottom pit of the elevator shaft through a mounting member. In this embodiment, the mounting member includes an installation base 2. The installation base 2 is fixedly connected to the bottom plate 1 through two pin shafts 202. The installation base 2 is fixed on the bottom pit floor of the elevator shaft through expansion bolts 201.

[0025] For the convenience of installation, a spacer block 10 is also provided. The spacer block 10 can be padded between the bottom of the support frame 6 and the top of the bottom plate 1 during installation.

[0026] In order to facilitate the understanding of the above technical solution of the present utility model, the following will detail the working principle or operation mode of the present utility model in the actual process.

[0027] Working principle: When installing, first fix the installation base 2 to the ground with expansion bolts 201, then connect the bottom plate 1 to the installation base 2 with a pin shaft 202. After that, thread the installation speed limiter steel wire rope around the rope pulley 11 and adjust the length of the steel wire rope. Then remove the spacer block 10. At this time, under the elastic force of the spring 5, the support frame 6 and the rope pulley 11 will move towards the ground, and the steel wire rope will be straightened under the tension force. By setting the upper limit protrusion 901 and the lower limit protrusion 902, the tension force of the spring 5 can be kept in a stable range. When the steel wire rope elongates or shortens due to environmental reasons, the support frame 6 will rise or fall accordingly. When the switch 8 reaches the upper limit protrusion 901 or the lower limit protrusion 902, the switch 8 will cut off the power supply to prevent the elevator from still working when the tension force of the tensioning device fails.

[0028] Specifically, a protective cover 7 for protecting the rope pulley 11 is fixedly installed on the support frame 6, and rope passing holes 701 for passing the rope are opened at both ends of the protective cover 7.

[0029] The above description shows and describes several preferred embodiments of the present invention. However, as mentioned before, it should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the present invention's concept through the above teachings or the technology or knowledge in the relevant field. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. Vertical spring speed limiter tensioning device, characterized in that: The invention comprises a base plate (1) and a support frame (6), wherein the top four corners of the base plate (1) are fixedly mounted with a guide sleeve (3) and a threaded column (4), wherein the threaded column (4) is located inside the guide sleeve (3), and flanges (601) are formed on both sides of the lower end of the support frame (6), wherein the flanges (601) are slidably mounted on the guide sleeve (3), and a spring (5) is mounted on the guide sleeve (3), wherein the bottom of the spring (5) is pressed on the flange (601), and a gasket (402) is mounted on the upper end of the threaded column (4), and a nut (401) for limiting the gasket (402) on the threaded column (4) is threadedly mounted on the upper end of the threaded column (4), and the upper end of the spring (5) is against the bottom of the gasket (402), and a rope pulley (11) is rotatably mounted inside the support frame (6), and the base plate (1) is fixed in the bottom pit of the elevator shaft through a mounting member.

2. The vertical spring speed limiter tensioning device according to claim 1 is characterized in that: A switch plate (9) is fixedly mounted on the top of the base plate (1); the upper end of the switch plate (9) slides through the flange (601) and is arranged on one side of the support frame (6); a switch (8) is fixedly mounted on one side of the support frame (6); and an upper limit protrusion (901) and a lower limit protrusion (902) are respectively arranged on the upper and lower ends of the switch plate (9).

3. The vertical spring speed limiter tensioning device according to claim 2 is characterized in that: A protective cover (7) for protecting the rope wheel (11) is fixedly mounted on the support frame (6), and rope threading holes (701) for threading a rope are provided at both ends of the protective cover (7).

4. The vertical spring speed limiter tensioning device according to claim 3 is characterized in that: The mounting member comprises a mounting base (2), and the mounting base (2) is fixedly connected to the base plate (1) via two pins (202).

5. The vertical spring speed limiter tensioning device according to claim 4 is characterized in that: The mounting base (2) is fixed to the pit floor of the elevator shaft by means of expansion bolts (201).

6. The vertical spring speed limiter tensioning device according to claim 2 is characterized in that: It also comprises a cushion block (10), which can be cushioned between the bottom of the support frame (6) and the top of the base plate (1) during installation.

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