Speed-adjustable elevator buffer

Abstract

The speed-adjustable elevator buffer comprises an oil pressure cylinder body containing buffer oil, a core rod is upwards arranged at the bottom of the oil pressure cylinder body, an opening is formed in the upper end of the oil pressure cylinder body, a hollow rod assembly capable of moving up and down is further arranged at the position of the opening in the upper end, and a supporting spring is arranged between an upper top plate and a middle top plate. A flow control plate is arranged at the lower end of the hollow rod, a guide hole is formed in the middle of the flow control plate, a plurality of overflow holes are formed in the flow control plate, and the core rod is arranged in the guide hole in a penetrating mode. The device further comprises a plurality of adjusting screws, and one or more of the overflow holes can be selectively blocked by the adjusting screws. The elevator buffering device has the advantages that adjustment can be carried out according to different loads and speeds, it is ensured that a proper buffering effect can be provided under different conditions, and therefore the situation that impact is too large in the sudden falling process of an elevator is reduced, and the safety of passengers is improved.

Description

Technical Field

[0001] The utility model relates to an elevator buffer with adjustable speed. Background Art

[0002] An elevator buffer is a device installed at the bottom of the elevator shaft. Its main function is to protect the elevator and passengers from accidental injuries in emergency situations, such as when the elevator accidentally overspeeds or malfunctions.

[0003] Once a general elevator buffer has a problem, it cannot be solved by adjustment and the entire buffer may need to be replaced, increasing maintenance and replacement costs. It cannot be adjusted according to different elevator working conditions and usage environments, which may result in poor buffering effects in different situations.

[0004] Moreover, this type of elevator buffer that cannot adjust the speed may not be able to provide appropriate buffering effects under different loads and speeds, which may cause impact or excessive deceleration during the operation of the elevator, affecting the safety of passengers. Utility Model Content

[0005] In order to overcome the shortcoming that the existing elevator buffer cannot adjust the speed, the utility model provides an elevator buffer with adjustable speed.

[0006] The utility model solves the technical problem through a technical solution: an elevator buffer with adjustable speed, comprising a hydraulic cylinder body filled with buffer oil, a core rod being upwardly provided at the bottom of the hydraulic cylinder body, an upper end of the hydraulic cylinder body being open, a hollow rod assembly movable up and down being provided at the upper end opening, an upper top plate being provided at the upper end of the hollow rod assembly, a middle top plate being provided on the hydraulic cylinder body, a supporting spring being provided between the upper top plate and the middle top plate; a flow control plate being provided at the lower end of the hollow rod, a guide hole being provided in the middle of the flow control plate, a plurality of overflow holes being provided on the flow control plate, and the core rod being passed through the guide hole; and a plurality of adjusting screws being provided, which can selectively block one or more of the overflow holes.

[0007] A preferred overflow hole is that the overflow holes are symmetrically arranged in pairs around the guide hole.

[0008] Further preferably, the overflow holes are evenly distributed on the flow control plate.

[0009] The number of overflow holes is limited, and at least four overflow holes are provided.

[0010] It is further defined that the overflow holes are provided with 8 holes and are distributed in a circle at an angle of 45 degrees outside the guide hole.

[0011] The shape of the overflow hole is optimized, the lower part of the overflow hole is a straight hole, the upper part is a trumpet expansion, and the aperture of the adjusting screw is consistent with the straight hole.

[0012] A preferred embodiment of the core rod is that a bottom plate is provided at the lower part of the bottom of the hydraulic cylinder body, and the lower end of the core rod is fixed on the bottom plate.

[0013] In order to further limit the position, a switch is provided on the middle top plate, and a support rod is provided downwardly from the upper top plate. The hollow rod assembly drives the support rod downward to trigger the switch.

[0014] In order to prevent the switch from being damaged when under pressure, the switch is installed on the lower end surface of the middle top plate. The middle top plate is provided with an opening, and the support rod is inserted into the opening with interference fit.

[0015] Further preferably, the switch is a switch with a touch button, the lower end of the support rod is an inclined surface, and the downward direction of the inclined surface is a pressing touch button.

[0016] The utility model is consistent with the elevator buffer of the prior art when in use, the difference is that in the normal maintenance state, the buffer braking rate can be controlled by disassembling the hollow rod assembly and selecting the number of overflow holes into which the adjusting screws are inserted, and when the adjusting screws are installed, a symmetrical manner is selected to insert the adjusting screws so as to control symmetrical overflow.

[0017] The beneficial effects of the utility model are as follows: 1. Compared with elevator buffers that cannot adjust the rate, elevator buffers with adjustable rates can be adjusted according to different loads and speeds, ensuring that appropriate buffering effects can be provided in different situations, thereby reducing the excessive impact of the elevator during a sudden fall and improving the safety of passengers. 2. In terms of product adaptation, one elevator buffer can be used for multiple elevator models. It only needs to adjust the adjustment screw on the built-in overflow hole, without the need to purchase multiple elevator buffers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of an embodiment.

[0019] Figure 2 It is a cross-sectional schematic diagram of an embodiment.

[0020] Figure 3 Schematic diagram of a flow control plate according to an embodiment. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] Example 1

[0023] Combined with Figures 1 to 3, an elevator buffer with adjustable speed, comprising a hydraulic cylinder body 2 containing buffer oil 1, a core rod 3 is upwardly provided at the bottom of the hydraulic cylinder body 2, the upper end of the hydraulic cylinder body 2 is open, and a hollow rod assembly 4 that can move up and down is also provided at the upper end opening, an upper top plate 5 is provided at the upper end of the hollow rod assembly 4, a middle top plate 6 is provided on the hydraulic cylinder body 2, and a supporting spring 7 is provided between the upper top plate 5 and the middle top plate 6; a flow control plate 8 is provided at the lower end of the hollow rod, a guide hole 9 is provided in the middle of the flow control plate 8, a plurality of overflow holes 10 are provided on the flow control plate 8, and the core rod 3 is penetrated in the guide hole 9; and a plurality of adjusting screws 11 are also included, and the adjusting screws 11 can selectively block one or more of the overflow holes 10.

[0024] A preferred overflow hole 10 is that the overflow holes 10 are symmetrically arranged in pairs around the guide hole 9 .

[0025] Further preferably, the overflow holes 10 are evenly distributed on the flow control plate 8 .

[0026] The number of the overflow holes 10 is limited, and at least four overflow holes 10 are provided.

[0027] It is further defined that the overflow holes 10 are provided with 8 in number and are distributed in a circle outside the guide hole 9 at an angle of 45 degrees.

[0028] The shape of the overflow hole 10 is optimized. The lower part of the overflow hole 10 is a straight hole, and the upper part is a trumpet expansion. The aperture of the adjusting screw 11 is consistent with the straight hole.

[0029] A preferred embodiment of the core rod 3 is that a bottom plate 12 is provided at the lower part of the bottom of the hydraulic cylinder body 2 , and the lower end of the core rod 3 is fixed on the bottom plate 12 .

[0030] In order to further limit the position, a switch 13 is provided on the middle top plate 6 , and a support rod 14 is provided downwardly on the upper top plate 5 . The hollow rod assembly 4 drives the support rod 14 downwardly to trigger the switch 13 .

[0031] In order to prevent the switch from being damaged when under pressure, the switch is installed on the lower end surface of the middle top plate 6. The middle top plate 6 is provided with an opening, and the support rod is inserted into the opening with interference fit.

[0032] Further preferably, the switch 13 is a switch 13 with a touch button 15, the lower end of the support rod is an inclined surface, and the downward direction of the inclined surface is a pressing touch button.

[0033] This embodiment is consistent with the elevator buffer of the prior art when in use, the difference is that in the normal maintenance state, the buffer braking rate can be controlled by disassembling the hollow rod assembly 4 and selecting the number of overflow holes 10 into which the adjusting screws 11 are inserted, and when installing the adjusting screws 11, a symmetrical manner is selected to insert the adjusting screws 11 to control symmetrical overflow.

[0034] The beneficial effects of this embodiment are as follows: 1. Compared with elevator buffers that cannot adjust the rate, elevator buffers with adjustable rates can be adjusted according to different loads and speeds, ensuring that they can provide appropriate buffering effects in different situations, thereby reducing the excessive impact of the elevator during a sudden fall and improving the safety of passengers. 2. In terms of product adaptation, one elevator buffer can be used for multiple elevator models. It only needs to adjust the adjustment screw on the built-in overflow hole, without the need to purchase multiple elevator buffers.

Claims

1. An elevator buffer with adjustable speed, comprising a hydraulic cylinder containing buffer oil, characterized in that: A core rod is provided upward from the bottom of the hydraulic cylinder body, the upper end of the hydraulic cylinder body is open, and a hollow rod assembly that can move up and down is also provided at the upper end opening, an upper top plate is provided at the upper end of the hollow rod assembly, a middle top plate is provided on the hydraulic cylinder body, and a supporting spring is provided between the upper top plate and the middle top plate; a flow control plate is provided at the lower end of the hollow rod, a guide hole is provided in the middle of the flow control plate, a plurality of overflow holes are provided on the flow control plate, and the core rod is passed through the guide hole; and a plurality of adjusting screws are also included, and the adjusting screws can selectively block one or more of the overflow holes.

2. The speed-adjustable elevator buffer according to claim 1, characterized in that: The overflow holes are symmetrically arranged in pairs around the guide hole.

3. The speed-adjustable elevator buffer according to claim 1, characterized in that: The overflow holes are evenly distributed on the flow control plate.

4. The speed-adjustable elevator buffer according to claim 1, characterized in that: There are at least four overflow holes.

5. The speed-adjustable elevator buffer according to claim 1, characterized in that: The overflow holes are provided with 8 holes and are distributed in a circle at an angle of 45 degrees outside the guide hole.

6. The speed-adjustable elevator buffer according to claim 1, characterized in that: The lower part of the overflow hole is a straight hole, and the upper part is a trumpet expansion. The aperture of the adjusting screw is consistent with the straight hole.

7. The speed-adjustable elevator buffer according to claim 1, characterized in that: A bottom plate is provided at the lower part of the bottom of the oil pressure cylinder body, and the lower end of the core rod is fixed on the bottom plate.

8. The speed-adjustable elevator buffer according to claim 1, characterized in that: A switch is arranged on the middle top plate, and a support rod is arranged downwardly from the upper top plate. The hollow rod assembly drives the support rod downwardly to trigger the switch.

9. The speed-adjustable elevator buffer according to claim 8, characterized in that: The switch is installed on the lower end surface of the middle top plate. An opening is provided on the middle top plate, and the support rod is inserted into the opening with interference fit.

10. The speed-adjustable elevator buffer according to claim 8, characterized in that: The switch is a switch with a touch button, the lower end of the support rod is an inclined surface, and the downward direction of the inclined surface is the pressing touch button.

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