A sealed compensation and shock-absorbing elevator buffer

Abstract

The present invention discloses a sealed compensating vibration-damping elevator buffer, which relates to the technical field of elevators. The present invention comprises a cylinder body, an outer cylinder body and a plunger, wherein the outer cylinder body is fixed at the top of the cylinder body, the plunger penetrates and is slidably installed at the top of the outer cylinder body, and a sealed buffer device is provided on the outside of the cylinder body, wherein the sealed buffer device comprises a U-shaped fixed collar, a U-shaped sliding collar, a pressure ring, a rubber block and a rubber ring, wherein the U-shaped fixed collar is fixed at the top of the cylinder body. The present invention provides a sealed buffer device, wherein under the action of the spring force of the U-shaped sliding collar, the U-shaped sliding collar provides secondary buffering to the impact force received by the buffer, and at the same time, the rubber block, the U-shaped sliding collar and the outer cylinder body cooperate to drive the inclined surface of the pressure ring to squeeze the rubber block, so that when the buffer is impacted, the rubber block seals the gap between the outer cylinder body and the plunger, thereby avoiding the problem of easy leakage of hydraulic oil in the outer cylinder body.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, in particular to a sealed compensating vibration-damping type elevator buffer. Background Art

[0002] During elevator operation, the buffer is the last safety guarantee facility. If the elevator descends to the ground floor but is not stopped in time, the car will continue to move and collide with the pit, causing an elevator accident. If the buffer is installed in the pit, it can effectively improve the safety of the car's braking and will not cause harm to people. Therefore, the buffer is required by national standards to be one of the necessary installation devices for elevators.

[0003] The utility model patent with patent announcement number CN217996414U discloses an elevator buffer, which relates to the field of elevator buffers, including a cylinder body with a bottom plate, a core shaft installed on the inner side of the cylinder body, a plunger sleeved on the inner side of the cylinder body and located above the core shaft, a first spring is provided on the inner side of the plunger, and a baffle connected to the plunger is provided at the bottom end of the first spring. A connecting tube is sleeved on the outer side of the plunger, and an outer cylinder body is sleeved on the outer side of the cylinder body. The utility model generates an impact force on the plunger through the elevator, so that the plunger squeezes the hydraulic oil, and the hydraulic oil squeezes the baffle, compressing the first spring, thereby reducing the instantaneous impact force of the elevator contacting the plunger. At the same time, the plunger drives the connecting tube to squeeze the second spring, compressing the air between the cylinder body and the outer cylinder, and reducing the downward force of the connecting tube on the plunger due to air resistance, so that the instantaneous impact force of the elevator contacting the plunger is reduced for a second time, so that the elevator stops more smoothly.

[0004] However, the current elevator buffer has the following problems: when the elevator falls rapidly, it will contact the buffer. The moment the elevator and the buffer contact, a large impact force will be generated between the piston and the hydraulic oil, causing the elevator to vibrate due to the squeezing of the hydraulic oil by the piston, which will easily cause the hydraulic oil in the outer cylinder to leak. Therefore, we proposed a sealed compensation vibration-damping elevator buffer. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a sealed compensating vibration-damping elevator buffer, which solves the problem raised in the above background technology that the elevator will contact the buffer when falling rapidly. The moment the elevator contacts the buffer, a large impact force will be generated between the piston and the hydraulic oil, causing the elevator to vibrate due to the squeezing of the hydraulic oil by the piston, which will cause the hydraulic oil in the outer cylinder to leak easily.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A sealed compensating vibration-damping elevator buffer comprises a base plate, an outer cylinder and a plunger. The outer cylinder is fixed to the top of the base plate, the plunger passes through and is slidably installed on the top of the outer cylinder, a sealed buffer device is provided on the outside of the base plate, the sealed buffer device comprises a U-shaped fixed collar, a U-shaped sliding collar, a pressure ring, a rubber block and a rubber ring, the U-shaped fixed collar is fixed to the top of the base plate, the U-shaped sliding collar is slidably installed on the outside of the outer cylinder, a spring is provided between the U-shaped sliding collar and the top of the base plate, the U-shaped sliding collar is located on the inner side of the U-shaped fixed collar, the rubber block is fixed to the top of the plunger, the pressure ring is fixed to the bottom of the rubber block by a spring, the pressure ring is sleeved and slidably installed on the outside of the plunger, the rubber ring is fixed to the top of the outer cylinder, and the rubber ring is sleeved on the outside of the plunger.

[0008] Furthermore, the inner ring at the bottom of the pressure ring is arranged as an inclined surface, and the rubber ring is located on the movement trajectory of the inclined surface of the pressure ring.

[0009] Furthermore, an oil leakage detection device is provided below the inner wall of the U-shaped sliding ring, and the oil leakage detection device includes an inclined groove, a liquid leakage detector, a spring plate and a protrusion. The inclined groove is opened at the bottom of the inner wall of the U-shaped sliding ring, and the liquid leakage detector is fixed to the front edge of the U-shaped sliding ring. A detection head is fixed to the bottom of the liquid leakage detector, and the detection head extends to the inside of the inclined groove. The spring plate is fixed to the back outer wall surface of the U-shaped sliding ring, and a knocking rod is fixed to the side wall of the spring plate close to the U-shaped sliding ring, and the protrusion is fixed to the back outer wall of the U-shaped fixed ring.

[0010] Furthermore, one end of the knock rod away from the spring plate contacts the outer wall of the U-shaped sliding ring, and the end of the spring plate away from the U-shaped sliding ring is fixed with a convex ball, and the convex block is located on the movement trajectory of the convex ball of the spring plate.

[0011] Furthermore, a promotion device is provided at the lower back side of the U-shaped sliding ring, and the promotion device includes an arc shell, which is fixed at the outer wall of the back side of the U-shaped sliding ring, and a folding bag is provided inside the arc shell. T-shaped pressure rods are fixed on the left and right sides of the folding bag, and one end of the T-shaped pressure rod is slidably installed inside the arc shell, and the other end of the T-shaped pressure rod is fixedly connected to a side wall of the spring plate away from the U-shaped sliding ring, and an L-shaped air nozzle is fixed in the middle of the top surface of the folding bag.

[0012] Furthermore, the air nozzle of the L-shaped air nozzle is arranged toward the inclined groove.

[0013] Furthermore, notching devices are provided on both sides of the top of the U-shaped fixed ring, and the notching device includes a fixed shell and a semi-arc block. The fixed shell is fixed on the top of the U-shaped fixed ring, and a U-shaped sliding rod is slidably installed inside the fixed shell. A spring is provided between the U-shaped sliding rod and the fixed shell, and a grinding block is fixed on the side of the U-shaped sliding ring close to the U-shaped sliding ring, and the semi-arc block is fixed on the back outer wall of the U-shaped sliding ring.

[0014] Furthermore, the grinding block contacts the outer wall of the U-shaped sliding ring, and the outer wall of the U-shaped sliding ring is set as a rough surface. A convex ball block is fixed on the front of the inner wall of the U-shaped slide rod, and the convex ball block of the U-shaped slide rod is located on the motion trajectory of the semi-arc block.

[0015] The present invention provides a sealed compensating vibration-damping elevator buffer. It has the following beneficial effects:

[0016] (1) The present invention provides a sealing buffer device. Under the action of the spring force of the U-shaped sliding ring, the U-shaped sliding ring provides secondary buffering for the impact force received by the buffer. At the same time, the rubber block, the U-shaped sliding ring and the outer cylinder cooperate to drive the inclined surface of the pressure ring to squeeze the rubber ring. When the buffer is impacted, the rubber ring seals the gap between the outer cylinder and the plunger, thereby avoiding the problem of easy leakage of hydraulic oil in the outer cylinder.

[0017] (2) The present invention sets up an oil leakage detection device so that the leaked hydraulic oil will flow into the chute. Under the guiding action of the inclined surface of the chute, the hydraulic oil in the chute will flow to the detection head. When the leakage detector detects the oil leakage through the detection head, the leakage detector will sound an alarm to warn the workers to repair. At the same time, the U-shaped sliding ring, the spring plate and the protrusion cooperate to drive the knocking rod to knock the U-shaped sliding ring. The U-shaped sliding ring drives the chute to vibrate, thereby increasing the speed at which the hydraulic oil in the chute flows to the detection head, thereby improving the efficiency of the leakage detector in detecting leakage.

[0018] (3) The present invention promotes the setting of the device so that the convex block, the convex ball of the spring plate, the U-shaped sliding ring and the T-shaped pressure rod cooperate to squeeze the folding bag, and the air in the folding bag is ejected through the L-shaped air nozzle. The ejected gas blows the hollow hydraulic oil on the chute, thereby further increasing the speed of the hydraulic oil inside the chute flowing to the detection head, thereby ensuring that when the hydraulic oil in the outer cylinder leaks, the leakage detector can detect the leakage information in the first time.

[0019] (4) The present invention sets a notching device so that the rough surface of the U-shaped sliding ring rubs against the inner wall of the U-shaped fixed ring, so that the friction between the U-shaped sliding ring and the U-shaped fixed ring consumes the impact force, thereby further improving the buffering effect of the buffer; at the same time, the U-shaped sliding ring, the semi-arc block, the U-shaped sliding rod and the fixed shell cooperate to drive the grinding block to grind the outer wall of the U-shaped sliding ring, thereby ensuring that the U-shaped sliding ring is in a rough state, thereby avoiding the problem that the U-shaped sliding ring is worn flat after long-term use and loses the effect of consuming impact force. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the present invention as a whole;

[0021] Figure 2A multi-angle schematic diagram of the present invention as a whole;

[0022] Figure 3 is a schematic diagram of the sealing and buffering device of the present invention;

[0023] Figure 4 Schematic diagram of the sealing buffer device of the present invention from multiple angles;

[0024] Figure 5 is a schematic diagram of an oil leakage detection device of the present invention;

[0025] Figure 6 It is a partial structural diagram of the oil leakage detection device of the present invention;

[0026] Figure 7 is a schematic diagram of the promotion device of the present invention;

[0027] Figure 8 Schematic diagram of the scoring device of the present invention.

[0028] In the figure: 1. Base plate; 2. Outer cylinder; 3. Plunger; 4. Sealing buffer device; 41. U-shaped fixed collar; 42. U-shaped sliding collar; 43. Pressure ring; 44. Rubber block; 45. Rubber ring; 5. Oil leakage detection device; 51. Inclined groove; 52. Liquid leakage detector; 53. Spring plate; 54. Knocking rod; 55. Detection head; 56. Bump; 6. Notching device; 61. Fixed shell; 62. U-shaped sliding rod; 63. Grinding block; 64. Semi-arc block; 7. Promotion device; 71. Arc shell; 72. Folding bag; 73. L-shaped air nozzle; 74. T-shaped pressure rod. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] See also Figure 1-8The present invention provides a technical solution: a sealed compensating vibration-damping elevator buffer, comprising a base plate 1, an outer cylinder 2 and a plunger 3. The outer cylinder 2 is fixed to the top of the base plate 1, and the plunger 3 passes through and is slidably installed on the top of the outer cylinder 2. A sealed buffer device 4 is provided on the outside of the base plate 1. The sealed buffer device 4 comprises a U-shaped fixed collar 41, a U-shaped sliding collar 42, a pressure ring 43, a rubber block 44 and a rubber ring 45. The U-shaped fixed collar 41 is fixed to the top of the base plate 1, and the U-shaped sliding collar 42 is slidably installed on the outside of the outer cylinder 2. A spring is provided between the U-shaped sliding collar 42 and the top of the base plate 1. Under the action of the spring force of the U-shaped sliding collar 42, the U-shaped sliding collar 42 can reduce the impact force on the buffer. Secondary buffer, the U-shaped sliding ring 42 is located on the inner side of the U-shaped fixed ring 41, the rubber block 44 is fixed on the top of the plunger 3, and the pressure ring 43 is fixed to the bottom of the rubber block 44 by a spring. The pressure ring 43 is sleeved and slidably installed on the outside of the plunger 3, and the inner ring of the bottom of the pressure ring 43 is set as an inclined surface. The rubber ring 45 is located on the inclined surface movement trajectory of the pressure ring 43, the rubber ring 45 is fixed on the top of the outer cylinder 2, and the rubber ring 45 is sleeved on the outside of the plunger 3. At the same time, the rubber block 44 drives the inclined surface of the pressure ring 43 to squeeze the rubber ring 45, so that when the buffer is impacted, the rubber ring 45 seals the gap between the outer cylinder 2 and the plunger 3, thereby avoiding the problem of easy leakage of hydraulic oil in the outer cylinder 2.

[0031] An oil leakage detection device 5 is provided below the inner wall of the U-shaped sliding collar 42. The oil leakage detection device 5 includes an inclined groove 51, a leakage detector 52, a spring plate 53 and a protrusion 56. The inclined groove 51 is opened at the bottom of the inner wall of the U-shaped sliding collar 42. The leakage detector 52 is fixed to the front edge of the U-shaped sliding collar 42. A detection head 55 is fixed to the bottom of the leakage detector 52. The detection head 55 extends to the inside of the inclined groove 51. The leaked hydraulic oil flows into the inclined groove 51. Under the guiding action of the inclined surface of the inclined groove 51, the hydraulic oil in the inclined groove 51 will flow to the detection head 55. When the leakage detector 52 detects oil leakage through the detection head 55, the leakage detector 52 will issue an alarm to alert the worker to repair. The spring plate 53 is fixed to the U-shaped sliding collar 42. On the outer surface of the back side of the dynamic collar 42, a knocking rod 54 is fixed at a side wall of the spring plate 53 close to the U-shaped sliding collar 42. The end of the knocking rod 54 away from the spring plate 53 contacts the outer wall of the U-shaped sliding collar 42, and the protrusion 56 is fixed to the outer wall of the back side of the U-shaped fixed collar 41. A convex ball is fixed at the end of the spring plate 53 away from the U-shaped sliding collar 42. The protrusion 56 is located on the movement trajectory of the convex ball of the spring plate 53. At the same time, the protrusion 56 drives the knocking rod 54 to knock on the U-shaped sliding collar 42 by pushing the spring plate 53. The U-shaped sliding collar 42 drives the chute 51 to vibrate, thereby increasing the speed at which the hydraulic oil inside the chute 51 flows to the detection head 55, thereby improving the efficiency of the leakage detector 52 in detecting leakage.

[0032] A promotion device 7 is provided at the lower back of the U-shaped sliding collar 42. The promotion device 7 includes an arc shell 71, which is fixed to the outer wall of the back of the U-shaped sliding collar 42. A folding capsule 72 is provided inside the arc shell 71. T-shaped pressure rods 74 are fixed on the left and right sides of the folding capsule 72. One end of the T-shaped pressure rod 74 is slidably installed inside the arc shell 71, and the other end of the T-shaped pressure rod 74 is fixedly connected to a side wall of the spring plate 53 away from the U-shaped sliding collar 42. An L-shaped pressure rod 74 is fixed on the middle of the top surface of the folding capsule 72. The air nozzle 73 of the L-shaped air nozzle 73 is set towards the direction of the inclined groove 51. The protrusion 56 drives the T-shaped pressure rod 74 to squeeze the folding bag 72 by pushing the spring plate 53. The air in the folding bag 72 is ejected through the L-shaped air nozzle 73. The ejected gas blows the hollow hydraulic oil on the inclined groove 51, thereby further increasing the speed at which the hydraulic oil inside the inclined groove 51 flows to the detection head 55, thereby ensuring that when the hydraulic oil in the outer cylinder 2 leaks, the leakage detector 52 can detect the leakage information in the first time.

[0033] The U-shaped fixed collar 41 is provided with notching devices 6 on both sides of its top. The notching device 6 includes a fixed shell 61 and a semi-arc block 64. The fixed shell 61 is fixed to the top of the U-shaped fixed collar 41. A U-shaped slide bar 62 is slidably installed inside the fixed shell 61. A spring is provided between the U-shaped slide bar 62 and the fixed shell 61. A grinding block 63 is fixed on the side of the U-shaped slide bar 62 close to the U-shaped sliding collar 42. The grinding block 63 contacts the outer wall of the U-shaped sliding collar 42, and the outer wall of the U-shaped sliding collar 42 is provided with a rough surface. The rough surface of the U-shaped sliding collar 42 rubs against the inner wall of the U-shaped fixed collar 41, thereby making the U-shaped The friction between the sliding collar 42 and the U-shaped fixed collar 41 consumes the impact force, thereby further improving the buffering effect of the buffer. The semi-arc block 64 is fixed to the back outer wall of the U-shaped sliding collar 42, and a convex ball block is fixed to the front of the inner wall of the U-shaped slide rod 62. The convex ball block of the U-shaped slide rod 62 is located on the movement trajectory of the semi-arc block 64. At the same time, the semi-arc block 64 drives the grinding block 63 to grind the outer wall of the U-shaped sliding collar 42 by pushing the U-shaped slide rod 62, thereby ensuring that the U-shaped sliding collar 42 is in a rough state, thereby avoiding the problem that the U-shaped sliding collar 42 is worn out after long-term use and loses the effect of consuming impact force.

[0034] During use, when the elevator contacts the buffer during rapid drop, the elevator first contacts the rubber block 44. The elevator drives the U-shaped sliding ring 42 to move downward along the outer wall of the outer cylinder 2 by pushing the rubber block 44. Under the action of the spring force of the U-shaped sliding ring 42, the U-shaped sliding ring 42 provides secondary buffering for the impact force received by the buffer. At the same time, the rubber block 44 drives the pressure ring 43 to lean against the rubber block 44. The inclined surface of the pressure ring 43 squeezes the rubber ring 45, so that when the buffer is impacted, the rubber ring 45 seals the gap between the outer cylinder 2 and the plunger 3, thereby avoiding the problem of easy leakage of hydraulic oil in the outer cylinder 2.

[0035] When the hydraulic oil in the outer cylinder 2 leaks, the leaked hydraulic oil will flow into the chute 51. Under the guiding action of the inclined surface of the chute 51, the hydraulic oil in the chute 51 will flow to the detection head 55. When the leakage detector 52 detects the oil leakage through the detection head 55, the leakage detector 52 will sound an alarm to alert the workers to repair. At the same time, when the U-shaped sliding ring 42 moves downward, the U-shaped sliding ring 42 drives the spring plate 53 to move synchronously, and the protrusion 56 drives the spring plate 53 to move by pushing the convex ball of the spring plate 53. The plate 53 swings in the direction away from the U-shaped sliding ring 42, and the spring plate 53 drives the knocking rod 54 away from the U-shaped sliding ring 42. When the protrusion 56 does not push the protruding ball of the spring plate 53, under the elastic force of the spring plate 53, the spring plate 53 is reset and drives the knocking rod 54 to knock on the U-shaped sliding ring 42. The U-shaped sliding ring 42 drives the chute 51 to vibrate, thereby increasing the speed at which the hydraulic oil inside the chute 51 flows to the detection head 55, thereby improving the efficiency of the leakage detector 52 in detecting leakage.

[0036] At the same time, when the convex block 56 drives the spring plate 53 to swing away from the U-shaped sliding ring 42 by pushing the convex ball of the spring plate 53, the spring plate 53 squeezes the folding bag 72 by pushing the T-shaped pressure rod 74, and the air in the folding bag 72 is ejected through the L-shaped air nozzle 73. The ejected gas blows the hydraulic oil hollow on the chute 51, thereby further increasing the speed at which the hydraulic oil inside the chute 51 flows to the detection head 55, thereby ensuring that when the hydraulic oil in the outer cylinder 2 leaks, the leakage detector 52 can detect the leakage information in the first time.

[0037] At the same time, each time the U-shaped sliding ring 42 moves downward, the rough surface of the U-shaped sliding ring 42 rubs against the inner wall of the U-shaped fixed ring 41, so that the friction between the U-shaped sliding ring 42 and the U-shaped fixed ring 41 consumes the impact force, thereby further improving the buffering effect of the buffer; at the same time, when the U-shaped sliding ring 42 moves downward, it drives the semi-arc block 64 to move synchronously, and the semi-arc block 64 drives the U-shaped sliding rod 62 to slide along the inside of the fixed shell 61 by pushing the convex ball block of the U-shaped sliding rod 62, and the U-shaped sliding rod 62 drives the grinding block 63 to grind the outer wall of the U-shaped sliding ring 42, thereby ensuring that the U-shaped sliding ring 42 is in a rough state, thereby avoiding the problem that the U-shaped sliding ring 42 is worn out after long-term use and loses the effect of consuming impact force.

[0038] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A sealed compensating vibration-damping elevator buffer, comprising a base plate (1), an outer cylinder (2) and a plunger (3), wherein the outer cylinder (2) is fixed to the top of the base plate (1), and the plunger (3) penetrates and is slidably mounted on the top of the outer cylinder (2), characterized in that: A sealing buffer device (4) is provided on the outside of the base plate (1), and the sealing buffer device (4) comprises a U-shaped fixed collar (41), a U-shaped sliding collar (42), a pressure ring (43), a rubber block (44) and a rubber ring (45). The U-shaped fixed collar (41) is fixed to the top of the base plate (1), the U-shaped sliding collar (42) is slidably mounted on the outside of the outer cylinder (2), a spring is provided between the U-shaped sliding collar (42) and the top of the base plate (1), the U-shaped sliding collar (42) is located on the inner side of the U-shaped fixed collar (41), the rubber block (44) is fixed to the top of the plunger (3), the pressure ring (43) is fixed to the bottom of the rubber block (44) by a spring, the pressure ring (43) is sleeved and slidably mounted on the outside of the plunger (3), the rubber ring (45) is fixed to the top of the outer cylinder (2), and the rubber ring (45) is sleeved on the outside of the plunger (3); An oil leakage detection device (5) is provided below the inner wall of the U-shaped sliding collar (42). The oil leakage detection device (5) comprises an inclined groove (51), a liquid leakage detector (52), a spring plate (53) and a protrusion (56). The inclined groove (51) is provided at the bottom of the inner wall of the U-shaped sliding collar (42). The liquid leakage detector (52) is fixed to the front edge of the U-shaped sliding collar (42). A detection head (55) is fixed to the bottom of the liquid leakage detector (52). The detection head (55) extends to the inside of the inclined groove (51). The spring plate (53) is fixed to the back outer wall surface of the U-shaped sliding collar (42). A knocking rod (54) is fixed to a side wall of the spring plate (53) close to the U-shaped sliding collar (42). The protrusion (56) is fixed to the back outer wall of the U-shaped fixed collar (41).

2. The sealed compensating vibration-retarding elevator buffer according to claim 1, characterized in that: The inner ring at the bottom of the pressure ring (43) is provided with an inclined surface, and the rubber ring (45) is located on the movement trajectory of the inclined surface of the pressure ring (43).

3. The sealed compensating vibration-damping elevator buffer according to claim 1, characterized in that: One end of the knock rod (54) away from the spring plate (53) contacts the outer wall of the U-shaped sliding collar (42); one end of the spring plate (53) away from the end fixed to the U-shaped sliding collar (42) is fixed with a convex ball; the convex block (56) is located on the motion trajectory of the convex ball of the spring plate (53).

4. The sealed compensating vibration-retarding elevator buffer according to claim 1, characterized in that: A promotion device (7) is provided below the back of the U-shaped sliding ring (42), and the promotion device (7) includes an arc shell (71), the arc shell (71) is fixed to the outer wall of the back of the U-shaped sliding ring (42), and a folding bag (72) is provided inside the arc shell (71), and T-shaped pressure rods (74) are fixed on the left and right sides of the folding bag (72), one end of the T-shaped pressure rod (74) is slidably installed inside the arc shell (71), and the other end of the T-shaped pressure rod (74) is fixedly connected to a side wall of the spring plate (53) away from the U-shaped sliding ring (42), and an L-shaped air nozzle (73) is fixed in the middle of the top surface of the folding bag (72).

5. The sealed compensating vibration-retarding elevator buffer according to claim 4, characterized in that: The air jet of the L-shaped air nozzle (73) is arranged toward the inclined groove (51).

6. The sealed compensating vibration-retarding elevator buffer according to claim 1, characterized in that: A notching device (6) is provided on both sides of the top of the U-shaped fixed collar (41), and the notching device (6) comprises a fixed shell (61) and a semi-arc block (64). The fixed shell (61) is fixed on the top of the U-shaped fixed collar (41), and a U-shaped sliding rod (62) is slidably installed inside the fixed shell (61). A spring is provided between the U-shaped sliding rod (62) and the fixed shell (61). A grinding block (63) is fixed on the side of the U-shaped sliding collar (42) close to the U-shaped sliding collar (42), and the semi-arc block (64) is fixed on the back outer wall of the U-shaped sliding collar (42).

7. The sealed compensating vibration-retarding elevator buffer according to claim 6, characterized in that: The grinding block (63) contacts the outer wall of the U-shaped sliding ring (42), and the outer wall of the U-shaped sliding ring (42) is provided with a rough surface. A convex ball block is fixed on the front side of the inner wall of the U-shaped sliding rod (62), and the convex ball block of the U-shaped sliding rod (62) is located on the motion trajectory of the semi-arc block (64).

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