Adjustable buffer

Abstract

The utility model discloses an adjustable buffer, which belongs to the technical field of elevator safety buffer, and comprises a first base and a second base, the first base is provided with a groove part in the vertical direction, the second base is provided with a matching part matched with the groove part, and the first base and the second base are matched with each other. A plurality of adjusting holes which are vertically arranged at intervals are formed in the groove part and the matching part, first limiting pieces are arranged in the adjusting holes, a mounting plate is arranged on the side, away from the first base, of the second base, and a buffer is fixed to the mounting plate. According to the scheme, the structure is simple, the height adjustment range is larger, height adjustment in the vertical direction is conducted through the groove part of the first base and the matching part of the second base, and therefore the height position of the buffer can be integrally changed, the problem that the buffer is inconvenient to install due to the fact that the field well error is too large is solved, and the larger error value of the bottom of the elevator well can be compensated.

Description

Technical Field

[0001] The utility model relates to an elevator safety structure, more particularly to an adjustable buffer. Background Art

[0002] The elevator buffer base is a component fixed to the elevator shaft. It is fixed in the shaft pit, connected to the buffer, and bears part of the weight of the car or counterweight. Existing elevator buffer bases cannot be adjusted, making them unsuitable for problems such as large errors in on-site shaft measurement and uncontrollable factors in the shaft, which can lead to insufficient or excessive buffer base height.

[0003] For example, Chinese patent publication number CN220165542U, published on December 12, 2023, is titled "An Elevator Buffer Mounting Base." This application discloses an elevator buffer mounting base comprising a mounting base and an elevator buffer. A buffer base plate is fixedly mounted to the bottom outer wall of the elevator buffer. The mounting base comprises a lifting base, with bolts movably mounted on the left and right inner walls of the lifting base. A conical block is fixedly mounted on the outer wall of the top end of the bolt, and a slide bar is fixedly mounted on the top inner wall of the lifting base. This application allows the height of the elevator buffer to be adjusted by freely adjusting the height of the mounting base, making it easier to adapt to elevator pits of varying depths. However, this solution is structurally complex, has limited height adjustment, and has high installation and maintenance costs. Utility Model Content

[0004] The utility model overcomes the problems of the existing adjustable buffer with complex structure and limited height adjustment, and provides an adjustable buffer. This solution has a simple structure and a larger height adjustment range, and can solve the problem of large on-site well errors that make buffer installation inconvenient.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: an adjustable buffer, comprising a first base and a second base, wherein the first base is provided with a vertical groove, the second base is provided with a matching portion adapted to the groove, the groove and the matching portion are provided with a plurality of vertical and spaced adjustment holes, the adjustment holes are provided with a first limiter, and the second base is provided with a mounting plate on the side away from the first base, on which the buffer is fixed. This solution adjusts the height of the buffer in the vertical direction by adjusting the groove of the first base and the matching portion of the second base, thereby being able to change the height position of the buffer as a whole, solving the problem of large errors in the on-site well and making it inconvenient to install the buffer. Specifically, the first base and the second base are both provided with vertically arranged adjustment holes. By placing limiters on the adjustment holes on the first base and the second base, the vertical movement of the first base and the second base can be restricted, thereby fixing the relative positions of the first base and the second base. The adjustment holes are arranged at intervals on the first base and the second base, which can effectively expand the height adjustment range of the buffer.

[0006] Preferably, the first base is further provided with a fixing hole, which is provided above the adjustment hole and spaced apart from the adjustment hole. The fixing hole is used to fix and limit the first base and the second base. When the first limiting member is arranged in the adjustment hole between the first base and the second base, the first base and the second base can be initially positioned and fixed. In particular, when the first limiting member is arranged so that the uppermost adjustment hole of the first base is aligned with the lowermost adjustment hole of the second base, the first base and the second base cannot be fixed. Therefore, an additional fixing hole is required to be arranged at the uppermost portion of the first base for relative fixation of the first base and the second base.

[0007] Preferably, the fixing hole of the first base and the adjusting hole of the second base are provided with a second stopper. The second stopper and the first stopper can both be directly bolted to connect the holes on the first base and the second base to connect the first base and the second base together.

[0008] Preferably, the spacing between the fixing hole and the uppermost adjusting hole is the same as the spacing between the adjusting holes. Since the fixing holes on the first base need to be arranged with the adjusting holes on the second base together with the stoppers, the spacing between the fixing holes and the uppermost adjusting hole on the first base needs to be the same as the spacing between the adjusting holes.

[0009] Preferably, the cross-section of the groove portion of the first base and the mating portion of the second base is U-shaped. The U-shaped cross-section of the first and second bases allows for a transverse assembly between the first and second bases, reducing assembly difficulty. The notches on the first and second bases also facilitate observation by operators of the alignment of the adjustment holes on the first and second bases, as well as the locking status of the stopper.

[0010] Preferably, a fixing plate is provided on the side of the first base away from the second base, the fixing plate having fixing mounting holes evenly distributed around the circumference. The fixing plate is used to secure the first base to the elevator shaft pit. The mounting holes are engaged with collision bolts to secure the first base and the buffer to the elevator shaft pit.

[0011] Preferably, the mounting plate is provided with connecting holes, which are evenly arranged diagonally on the mounting plate; the connecting holes are oblong holes. The connecting holes are used to secure the buffer to the second base. The diagonal arrangement of the connecting holes enables stable mounting of the buffer on the second base, while the oblong holes can accommodate the installation of buffer bases of different sizes.

[0012] Preferably, the buffer includes a connection base, the mounting plate is larger than the connection base, and the connection base is fixed to the mounting plate. The mounting plate needs to provide a sufficient support surface for the buffer to ensure the buffer's installation stability and good load-bearing capacity for the elevator car or counterweight.

[0013] Compared with the prior art, the beneficial effects of the present invention are: (1) the vertical height of the buffer can be adjusted over a larger range, which can compensate for a larger error value at the bottom of the elevator shaft; (2) the structure is simple, the assembly is convenient, and the maintenance cost is lower; (3) due to the large vertical height adjustment range, the buffering effect of the buffer can also be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] Figure 2 This is a schematic diagram of the second base of the utility model.

[0016] Figure 3 This is the main view of the first base of the utility model.

[0017] Figure 4 This is a side view of the first base of the utility model.

[0018] Figure 5 This is a top view of the first base of the utility model.

[0019] Figure 6This is a top view of the second base of the utility model.

[0020] In the figure: 1. First base, 1.1. Groove, 1.2. Fixing hole, 1.3. Fixing plate, 1.31. Fixed mounting hole, 2. Second base, 2.1. Matching part, 2.2. Mounting plate, 2.21. Connecting hole, 3. Adjusting hole, 4. Buffer, 4.1. Connecting base, 5. Hoistway bottom pit, 6. Expansion bolt, 7. Fixing bolt. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be further described below with reference to specific embodiments and in conjunction with the accompanying drawings.

[0022] Example 1: Figure 1 The adjustable buffer comprises, from bottom to top, a first base 1, a second base 2 and a buffer 4. The first base 1 and the second base 2 form a plug-in fit, and the two can slide relative to each other in the vertical direction. The buffer 4 is arranged on the second base 2. When the first base 1 and the second base 2 are adjusted in relative position, the buffer 4 can be driven to adjust in the vertical direction, thereby changing the height position of the buffer 4. When the above-mentioned buffer 4 is arranged in the hoistway pit 5 of the elevator, the first base 1 is directly fixed to the hoistway pit 5. By changing the position of the second base 2 on the first base 1, the height of the buffer 4 can be adjusted, that is, the buffer 4 can adapt to the error of the hoistway pit 5, ensuring that the buffer 4 can play a buffering role during the operation of the elevator.

[0023] Specifically, such as Figures 3 to 5 As shown, the first base 1 includes a groove portion 1.1 and a fixing plate 1.3. The groove portion 1.1 is a vertically arranged column structure. The cross section of the groove portion 1.1 is U-shaped. The groove portion 1.1 is fixed in the middle position of the fixing plate 1.3, and the groove portion 1.1 and the fixing plate 1.3 are connected into one by welding. Four fixing mounting holes 1.31 are also provided on the fixing plate 1.3. The four groups of fixing mounting holes 1.31 are evenly arranged on the fixing plate 1.3 around the groove portion 1.1. In this embodiment, the fixing plate 1.3 adopts a square thin plate component, and the four groups of fixing mounting holes 1.31 are arranged at the four corners of the fixing plate 1.3; of course, the fixing plate 1.3 can also adopt a triangular or circular plate component. When the first base 1 is to be arranged, the fixing plate 1.3 is placed at the bottom and the groove 1.1 is placed at the top. The fixing plate 1.3 is fitted with the elevator shaft pit 5. Then, fasteners such as expansion bolts 6 are used to fix the fixing plate 1.3 and the shaft pit 5 together. This completes the fixed installation of the first base 1.

[0024] like Figure 2 and Figure 6As shown, the second base 2 includes a mating portion 2.1 and a mounting plate 2.2. The mating portion 2.1 is a vertically arranged cylindrical structure with a U-shaped cross-section. The mating portion 2.1 is fixed to the middle position of the mounting plate 2.2 and is welded to form a single body. The mounting plate 2.2 is also provided with four groups of connecting holes 2.21, which are evenly arranged around the mating portion 2.1. In this embodiment, the mounting plate 2.2 is a square thin plate member, and the four groups of connecting holes 2.21 are arranged at the four corners of the mounting plate 2.2. Of course, as with the fixing plate 1.3, the mounting plate 2.2 can also be a triangular or circular plate member. When the second base 2 is to be arranged, the mating portion 2.1 is placed lower and the mounting plate 2.2 is placed upper, so that the first base 1 and the second base 2 can be plugged and mated.

[0025] The groove portion 1.1 on the first base 1 and the matching portion 2.1 on the second base 2 can be plugged and assembled together, and can produce relative displacement in the vertical direction. Specifically, in this embodiment, the size of the groove portion 1.1 of the first base 1 is larger than the size of the matching portion 2.1 of the second base 2, so that the matching portion 2.1 of the second base 2 can be inserted into the groove portion 1.1 of the first base 1. Since the cross-sections of the groove portion 1.1 and the matching portion 2.1 are both U-shaped, a notch can be formed on one side of the groove portion 1.1 and the matching portion 2.1. The end of the groove portion 1.1 away from the fixing plate 1.3 and the end of the matching portion 2.1 away from the mounting plate 2.2 are also notches, so that the second base 2 can be directly inserted into the groove portion 1.1 of the first base 1 from the vertical direction, or can be embedded into the groove portion 1.1 of the first base 1 from the horizontal notch.

[0026] In order to lock the positions of the first base 1 and the second base 2, adjustment holes 3 are provided on the side wall of the groove portion 1.1 of the first base 1 and the side wall of the matching portion 2.1 of the second base 2. Figure 2 and Figure 3 As shown, the adjustment holes 3 are distributed on the two symmetrical side walls of the groove portion 1.1 and the matching portion 2.1, and four groups of adjustment holes 3 are provided on the matching portion 2.1, and the interval between the adjustment holes 3 on each side wall is 50 mm; while three groups of adjustment holes 3 and one group of fixing holes 1.2 are provided on the groove portion 1.1, and the fixing holes 1.2 are located at the top of the three groups of adjustment holes 3, and like the matching portion, the interval between the adjustment holes 3 is 50 mm, and at the same time, the interval between the fixing holes 1.2 and the topmost adjustment holes 3 is also 50 mm, to ensure that the fixing holes 1.2 and the adjustment holes 3 of the matching portion 1.1 can be aligned and assembled.

[0027] In the finished product, the fixing holes 1.2 and the adjustment holes 3 are identical, except that the fixing holes 1.2 also serve as a fixed stop. Specifically, when the second base 2 is fully inserted into the first base 1, the four sets of adjustment holes 3 on the second base 2 align with the adjustment holes 3 and the fixing holes 1.2 on the first base 1. At this point, the first stopper (not shown) is inserted into the bottommost adjustment holes 3 of the first and second bases 1 and 2, respectively, and the second stopper (not shown) is inserted into the topmost fixing holes 1.2 of the first base 1 and the topmost adjustment holes 3 of the second base 2. Both the first and second stoppers are bolts, and they are used to securely lock the first and second bases 1 and 2 together. Of course, to ensure installation strength and safety, more stoppers may be inserted into the remaining adjustment holes 3, but at least two sets of bolts (stoppers) must be placed between the first and second bases 1 and 2. That is, the topmost fixing hole 1.2 on the first base 1 cannot be used alone. The fixing hole 1.2 cannot be used to adjust the height and can only be used as a fixed limit. Therefore, in this embodiment, the first base 1 and the second base 2 can adjust the height range of the three groups of adjustment holes 3.

[0028] During on-site arrangement, the first base 1 is first fixed to the shaft pit 5. The position of the second base 2 relative to the first base 1 is then adjusted according to the lowest position of the elevator or counterweight, so that the buffer 4 can buffer the elevator or counterweight. The first and second limiters are then used to lock and secure the first and second bases 1 and 2. Finally, the buffer 4 is fixed to the mounting plate of the second base 2. Since, in this solution, the adjustment holes 3 are spaced apart, the vertical height of the buffer 4 can be adjusted over a wide range, compensating for larger errors in the elevator shaft pit 5, thereby also adjusting the buffering effect of the buffer 4.

[0029] Example 2: Figure 1 The adjustable buffer comprises, from bottom to top, a first base 1, a second base 2 and a buffer 4. The first base 1 and the second base 2 form a plug-in fit, and the two can slide relative to each other in the vertical direction. The buffer 4 is arranged on the second base 2. When the first base 1 and the second base 2 are adjusted in relative position, the buffer 4 can be driven to adjust in the vertical direction, thereby changing the height position of the buffer 4. When the above-mentioned buffer 4 is arranged in the hoistway pit 5 of the elevator, the first base 1 is directly fixed to the hoistway pit 5. By changing the position of the second base 2 on the first base 1, the height of the buffer 4 can be adjusted, that is, the buffer 4 can adapt to the error of the hoistway pit 5, ensuring that the buffer 4 can play a buffering role during the operation of the elevator.

[0030] Specifically, such as Figures 3 to 5As shown, the first base 1 includes a groove portion 1.1 and a fixing plate 1.3. The groove portion 1.1 is a vertically arranged column structure. The cross section of the groove portion 1.1 is U-shaped. The groove portion 1.1 is fixed in the middle position of the fixing plate 1.3, and the groove portion 1.1 and the fixing plate 1.3 are connected into one by welding. Four fixing mounting holes 1.31 are also provided on the fixing plate 1.3. The four groups of fixing mounting holes 1.31 are evenly arranged on the fixing plate 1.3 around the groove portion 1.1. In this embodiment, the fixing plate 1.3 adopts a square thin plate component, and the four groups of fixing mounting holes 1.31 are arranged at the four corners of the fixing plate 1.3; of course, the fixing plate 1.3 can also adopt a triangular or circular plate component. When the first base 1 is to be arranged, the fixing plate 1.3 is placed at the bottom and the groove 1.1 is placed at the top. The fixing plate 1.3 is fitted with the elevator shaft pit 5. Then, fasteners such as expansion bolts 6 are used to fix the fixing plate 1.3 and the shaft pit 5 together. This completes the fixed installation of the first base 1.

[0031] like Figure 2 and Figure 6 As shown, the second base 2 includes a mating portion 2.1 and a mounting plate 2.2. The mating portion 2.1 is a vertically arranged cylindrical structure with a U-shaped cross-section. The mating portion 2.1 is fixed to the middle position of the mounting plate 2.2 and is welded to form a single body. The mounting plate 2.2 is also provided with four groups of connecting holes 2.21, which are evenly arranged around the mating portion 2.1. In this embodiment, the mounting plate 2.2 is a square thin plate member, and the four groups of connecting holes 2.21 are arranged at the four corners of the mounting plate 2.2. Of course, as with the fixing plate 1.3, the mounting plate 2.2 can also be a triangular or circular plate member. When the second base 2 is to be arranged, the mating portion 2.1 is placed lower and the mounting plate 2.2 is placed upper, so that the first base 1 and the second base 2 can be plugged and mated.

[0032] The groove portion 1.1 on the first base 1 and the matching portion 2.1 on the second base 2 can be plugged and assembled together, and can produce relative displacement in the vertical direction. Specifically, in this embodiment, the size of the groove portion 1.1 of the first base 1 is larger than the size of the matching portion 2.1 of the second base 2, so that the matching portion 2.1 of the second base 2 can be inserted into the groove portion 1.1 of the first base 1. Since the cross-sections of the groove portion 1.1 and the matching portion 2.1 are both U-shaped, a notch can be formed on one side of the groove portion 1.1 and the matching portion 2.1. The end of the groove portion 1.1 away from the fixing plate 1.3 and the end of the matching portion 2.1 away from the mounting plate 2.2 are also notches, so that the second base 2 can be directly inserted into the groove portion 1.1 of the first base 1 from the vertical direction, or can be embedded into the groove portion 1.1 of the first base 1 from the horizontal notch.

[0033] In order to lock the positions of the first base 1 and the second base 2, adjustment holes 3 are provided on the side wall of the groove portion 1.1 of the first base 1 and the side wall of the matching portion 2.1 of the second base 2. Figure 2 and Figure 3 As shown, the adjustment holes 3 are distributed on the two symmetrical side walls of the groove portion 1.1 and the matching portion 2.1, and four groups of adjustment holes 3 are provided on the matching portion 2.1, and the interval between the adjustment holes 3 on each side wall is 50 mm; while three groups of adjustment holes 3 and one group of fixing holes 1.2 are provided on the groove portion 1.1, and the fixing holes 1.2 are located at the top of the three groups of adjustment holes 3, and like the matching portion, the interval between the adjustment holes 3 is 50 mm, and at the same time, the interval between the fixing holes 1.2 and the topmost adjustment holes 3 is also 50 mm, to ensure that the fixing holes 1.2 and the adjustment holes 3 of the matching portion 1.1 can be aligned and assembled.

[0034] In the finished product, the fixing holes 1.2 and the adjustment holes 3 are identical, except that the fixing holes 1.2 also serve as a fixed stop. Specifically, when the second base 2 is fully inserted into the first base 1, the four sets of adjustment holes 3 on the second base 2 align with the adjustment holes 3 and the fixing holes 1.2 on the first base 1. At this point, the first stopper (not shown) is inserted into the bottommost adjustment holes 3 of the first and second bases 1 and 2, respectively, and the second stopper (not shown) is inserted into the topmost fixing holes 1.2 of the first base 1 and the topmost adjustment holes 3 of the second base 2. Both the first and second stoppers are bolts, and they are used to securely lock the first and second bases 1 and 2 together. Of course, to ensure installation strength and safety, more stoppers may be inserted into the remaining adjustment holes 3, but at least two sets of bolts (stoppers) must be placed between the first and second bases 1 and 2. That is, the topmost fixing hole 1.2 on the first base 1 cannot be used alone. The fixing hole 1.2 cannot be used to adjust the height and can only be used as a fixed limit. Therefore, in this embodiment, the first base 1 and the second base 2 can adjust the height range of the three groups of adjustment holes 3.

[0035] The mounting plate 2.2 of the second base 2 is further provided with connection holes 2.21, which are arranged at the four corners of the mounting plate 2.2. Figure 6As shown, in this embodiment, the connection holes 2.21 are oblong holes. In actual operation, the types of buffers 4 are also diverse. In order to make the connection holes 2.21 on the mounting plate 2.2 adapt to a variety of different types of buffers 4, the connection holes 2.21 on the mounting plate 2.2 can be configured as oblong holes, and the length direction of the connection holes 2.21 is arranged along the diagonal line of the mounting plate 2.2. Of course, if a mounting plate 2.2 of another shape is used, the length direction of the connection holes 2.21 can be arranged diagonally.

[0036] The bottom of the buffer 4 is a connecting base 4.1, which is also provided with a mounting hole (not shown in the figure) for connecting to the connecting hole 2.21 on the mounting plate 2.2. When the type of buffer 4 is different, the size of its connecting base 4.1 will also be different accordingly, so that the radial layout of the mounting holes on the connecting base 4.1 will be different. The oblong hole can just meet the assembly requirements of holes with changed radial dimensions.

[0037] In addition, in order to ensure the installation stability of the buffer 4 and to ensure good bearing capacity for the elevator car or counterweight, the mounting plate 2.2 needs to provide a sufficient supporting surface for the buffer 4. Therefore, the size of the mounting plate 2.2 needs to be larger than the size of the connecting base 4.1, while also ensuring the effective assembly range of the connecting hole 2.21 (long round hole).

[0038] When arranging on site, first fix the first base 1 on the shaft pit 5, then adjust the position of the second base 2 relative to the first base 1 according to the lowest position of the elevator or counterweight, so that the buffer 4 can play a buffering role on the elevator or counterweight, then use the first limiter and the second limiter to lock and fix the first base 1 and the second base 2, and finally fix the buffer 4 to the mounting plate of the second base 2 with the fixing bolts 7. Because, in this solution, the adjustment holes 3 are distributed at intervals, the vertical height of the buffer 4 can be adjusted over a large range, which can compensate for larger errors in the elevator shaft pit 5, thereby also adjusting the buffering effect of the buffer 4.

Claims

1. An adjustable buffer, characterized in that: It includes a first base and a second base, the first base is provided with a vertical groove, the second base is provided with a matching portion adapted to the groove, the groove and the matching portion are provided with a plurality of adjustment holes arranged vertically and at intervals, a first limiter is provided in the adjustment hole, and the second base is provided with a mounting plate on the side away from the first base, and a buffer is fixed on the mounting plate.

2. The adjustable buffer according to claim 1, characterized in that: The first base is further provided with a fixing hole, which is arranged above the adjusting hole and is spaced apart from the adjusting hole.

3. The adjustable buffer according to claim 2, characterized in that: The fixing hole of the first base and the adjusting hole of the second base are provided with a second limiting member.

4. An adjustable buffer according to claim 2 or 3, characterized in that: The interval between the fixing hole and the uppermost adjusting hole is the same as the interval between the adjusting holes.

5. The adjustable buffer according to claim 1, characterized in that: The cross-sections of the groove portion of the first base and the matching portion of the second base are U-shaped.

6. The adjustable buffer according to claim 1, characterized in that: A fixing plate is provided on a side of the first base away from the second base, and the fixing plate is provided with fixing mounting holes evenly distributed in the circumferential direction.

7. The adjustable buffer according to claim 1, characterized in that: The mounting plate is provided with connecting holes, which are evenly arranged diagonally on the mounting plate; the connecting holes are oblong holes.

8. An adjustable buffer according to any one of claims 1 to 3 or 5 to 7, characterized in that: The buffer includes a connecting base, the size of the mounting plate is larger than the connecting base, and the connecting base is fixed to the mounting plate.

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