A hydraulic buffer for elevator safety braking and its buffering method

Abstract

The present invention discloses a hydraulic buffer for elevator safety braking and its buffering method, which includes a base, a support cylinder welded to the upper end of the base, a buffer cylinder inserted and installed in the middle of the support cylinder, an installation mechanism, the installation mechanism is symmetrically arranged at the left and right ends of the support cylinder, and the installation mechanism is used for installing and positioning between the support cylinder and the buffer cylinder, a heat dissipation mechanism, and the heat dissipation mechanism is symmetrically arranged on the left and right sides of the outer cylinder. This hydraulic buffer for elevator safety braking and its buffering method facilitate the stable installation, disassembly and maintenance of the buffer, can assist in supporting and strengthening the entire buffer, further improve the stability of the buffer during use, and combined with the setting of the heat dissipation mechanism, can assist in more efficiently dissipating the heat generated by the buffer during use to the outside, protect the buffer, and thus extend the actual service life of the buffer.

Description

Technical Field

[0001] The present invention relates to the technical field related to elevator hydraulic buffers, and specifically to a hydraulic buffer for elevator safety braking and its buffering method. Background Technique

[0002] An elevator refers to a permanent transportation device that serves several specific floors in a building, and its car moves on at least two rigid tracks perpendicular to the horizontal plane or with an inclination angle less than 15° to the plumb line. By setting up elevators, the efficiency of commuting tools has been greatly accelerated. Moreover, during the use of elevators, in order to ensure the safety of elevators, a variety of protection devices need to be set up, including elevator hydraulic buffers, which are used to absorb the energy received by the elevator at the extreme positions, prevent the elevator from causing harm to passengers when it gets out of control. The hydraulic buffer is the last insurance for the elevator. When other safety devices of the elevator cannot stop the out-of-control car, the car or counterweight impacts the buffer to absorb the consumed energy, thereby protecting passengers from harm;

[0003] For example, the patent with publication number CN101968093B discloses a hydraulic buffer, belonging to the technical field of buffering. The hydraulic buffer includes an outer cylinder body, an inner cylinder body placed inside the chamber of the outer cylinder body, a base threadedly connected to the outer cylinder body and tightly connected to the inner cylinder body, a sealing device placed in the upper part of the chamber of the outer cylinder body, and a piston and a piston connecting rod. An oil injection channel is provided in the base. The liquid in the inner cavity at the lower part of the piston flows through the oil injection channel into the outer cavity, and the liquid in the outer cavity enters the inner cavity through the inner cylinder oil injection hole at the upper part of the inner cylinder body. An adjusting rod is provided in the base, and the adjusting rod is used to adjust the flow area of the oil flowing through the base in the inner cavity or the outer cavity, thereby adjusting the bearing area of the hydraulic buffer. The structure of this hydraulic buffer is simple, the processing cost is reduced, and at the same time, the problems existing in the existing hydraulic buffers, such as the non-adjustable bearing pressure, unstable buffer pressure, and oil leakage, are solved, and it is applicable to large-scale stamping and forging hydraulic machinery occasions;

[0004] As the publication number is CN220502362U, it discloses a hydraulic buffer for an elevator, which includes a bottom plate and a base. The base is welded above the bottom plate. A first disc is installed inside the base. A buffer device is installed above the first disc, and a sealing device is installed above the buffer device. For this hydraulic buffer of the elevator, when the upper part of this device is subjected to the pressure of the elevator car, the axle rod will drive the piston to move downward. The piston cooperates with the inner cylinder to squeeze the spring, causing the spring to undergo elastic deformation. At the same time, the hydraulic oil below the inner cylinder will be discharged from the oil drain hole and enter the upper part of the piston through the oil return hole for storage. When there is no force on the upper part of this device, the piston will reset through the elastic performance of the spring, and the hydraulic oil will also return to its original position through the oil return hole and the oil drain hole. In this way, it is possible to prevent the leakage of hydraulic oil, thereby improving the damping effect generated by the flow of hydraulic oil and the buffer protection effect on the elevator car;

[0005] However, the existing hydraulic buffers and their buffering methods for elevator safety braking still have the following deficiencies:

[0006] 1. For the existing hydraulic buffers and their buffering methods for elevator safety braking, when installing between the buffer and the support seat, most of the installation methods rely on external installation tools and use bolts for installation and positioning, making installation, disassembly, and maintenance relatively inconvenient;

[0007] 2. For the existing hydraulic buffers and their buffering methods for elevator safety braking, due to the extremely large impact force during impact, and the buffer lacks an auxiliary support mechanism to reinforce between the buffer and the support seat, the stability of the buffer when receiving the impact force is insufficient;

[0008] 3. For the existing hydraulic buffers and their buffering methods for elevator safety braking, a large amount of heat is generated during the braking and buffering process of the buffer. Most of the heat is directly dissipated outward. The buffer lacks a heat dissipation component for auxiliary and efficient heat dissipation, and the heat dissipation effect is poor, affecting the actual service life of the buffer.

[0009] Therefore, we propose a hydraulic buffer and its buffering method for elevator safety braking to solve the problems raised above. Summary of the Invention

[0010] The object of the present invention is to provide a hydraulic buffer for elevator safety braking and its buffering method, so as to solve the problems raised in the above background technology. When installing between the buffer and the support seat, most of the installation methods rely on external installation tools and use bolts for installation positioning, which is inconvenient for installation and disassembly maintenance. Due to the very large impact force during impact, the buffer lacks an auxiliary support mechanism to reinforce between the buffer and the support seat, resulting in insufficient stability of the buffer when receiving the impact force. A large amount of heat is generated during the braking buffer process of the buffer, and most of the heat is directly dissipated outward. The buffer lacks a heat dissipation component for auxiliary efficient heat dissipation, and the heat dissipation effect is poor, affecting the actual service life of the buffer.

[0011] To achieve the above object, the present invention provides the following technical solutions: A hydraulic buffer for elevator safety braking and its buffering method, including a base, a support cylinder welded to the upper end of the base, and a buffer cylinder inserted and installed in the middle of the support cylinder;

[0012] Among them, a buffer rod is slidably connected to the upper end of the buffer cylinder, and a piston is fixedly connected to the lower end of the buffer rod. The piston is telescopically connected in the cavity inside the buffer cylinder, and hydraulic oil is provided at the lower end of the cavity inside the buffer cylinder;

[0013] It also includes:

[0014] An installation mechanism, which is symmetrically arranged at the left and right ends of the support cylinder, and the installation mechanism is used for installing and positioning between the support cylinder and the buffer cylinder, and the installation mechanism drives the buffer cylinder to form a disassembly structure in the middle of the support cylinder;

[0015] A heat dissipation mechanism, which is symmetrically arranged on the left and right sides of the outer cylinder. The heat dissipation mechanism includes a cover plate covering the outside of the outer cylinder, heat dissipation copper sheets fixedly connected to the inner side of the cover plate, heat dissipation grooves opened on the cover plate, and an auxiliary plate fixedly connected to the middle of the outside of the cover plate;

[0016] Among them, a support rod is arranged on the outside of the cover plate, and the support rod drives the heat dissipation mechanism to form a flipping structure on the upper end of the base. The cover plate and the outer cylinder are fixed by bolts.

[0017] Preferably, an outer cylinder is fixed to the outer surface of the buffer cylinder, and a hydraulic oil filling hole is installed at the upper end of the outer cylinder. Through holes are equally angled on the side wall of the buffer cylinder, and the buffer cylinder is communicated with the outer cylinder through the through holes. Positioning columns are welded to the left and right sides of the lower end of the buffer cylinder, and the positioning columns are connected to the support cylinder through card slots;

[0018] Among them, rib plates are welded to the front and rear ends of the support cylinder.

[0019] Preferably, an anti-collision plate is fixedly connected to the upper end of the buffer rod, and buffer springs are arranged at equal angles between the anti-collision plate and the buffer cylinder.

[0020] Preferably, the installation mechanism includes an installation sleeve sleeved outside the positioning column, installation plates fixedly connected to the front and rear ends of the installation sleeve, an installation rod fixedly connected to the middle of the rib plate, an installation cap for limiting, and an anti-disengagement cap fittingly arranged outside the installation cap.

[0021] Preferably, the installation rod is inserted into the lower end of the installation plate, and the installation rod is threadedly connected to both the installation cap and the anti-disengagement cap, and the installation cap is closely attached to the lower end of the installation plate.

[0022] Preferably, the heat dissipation copper sheet is fittingly arranged on the outer side of the outer cylinder.

[0023] Preferably, the auxiliary plate is rotatably connected to the upper end of the support rod, and the lower end of the support rod is hingedly connected to the support plate. A convex block is fixedly connected to the middle of the upper end of the support plate, and the convex block is snap-fitted to the middle of the limiting plate.

[0024] Preferably, the limiting plate is hingedly connected to the front side of the connecting plate, and the support plate is snap-fitted to the middle of the connecting plate. The outer side of the support plate is snap-fitted to a support block in a "T" shape structure, and the support block is fixedly connected to the connecting plate.

[0025] Preferably, a movable column is rotatably connected to the rear end of the connecting plate, and the rotation angle range between the movable column and the connecting plate is 0 - 90º. A torsion spring is arranged at the connection between the connecting plate and the movable column, and blocking blocks are fixedly connected to both the left and right ends of the movable column;

[0026] Wherein, the blocking block and the limiting plate are locked by a fixing bolt, and the fixing bolt is threadedly connected to both the blocking block and the limiting plate.

[0027] Preferably, the method for using the hydraulic buffer for elevator safety braking includes the following steps:

[0028] Step 1: Stably install the buffer cylinder at the upper end of the support cylinder through the installation mechanism for convenient maintenance and repair;

[0029] Step 2: The buffer cylinder and the outer cylinder can be supported and reinforced by the support rod, the support plate and the connecting plate, improving the stability of the buffer during use;

[0030] Step 3: The anti-collision plate and the buffer rod drive the piston to perform telescopic movement in the inner cavity of the buffer cylinder, squeezing the hydraulic oil. Combined with the setting of the buffer spring, buffering for the elevator can be achieved;

[0031] Step 4: Through the setting of the heat dissipation mechanism, it can assist in more efficiently dissipating the heat generated by the buffer outward, extending the service life of the buffer.

[0032] Compared with the prior art, the beneficial effects of the present invention are as follows: For the hydraulic buffer for elevator safety braking and its buffering method, through the setting of the installation mechanism, it is convenient to limit the position between the buffer cylinder and the support cylinder, thereby facilitating the stable installation, disassembly and maintenance of the buffer. Through the setting of the support rod, support plate and connecting plate, the whole buffer can be supported and reinforced, further improving the stability of the buffer during use. Moreover, combined with the setting of the heat dissipation mechanism, it can assist in more efficiently dissipating the heat generated by the buffer during use outward, protecting the buffer, and thus extending the actual service life of the buffer.

[0033] 1. An installation mechanism is provided. The installation mechanism is symmetrically arranged at the front and rear ends of the support cylinder. The installation mechanism includes an installation sleeve, an installation plate, an installation rod, an installation cap and an anti-detachment cap. Through the setting of the installation mechanism, it is very convenient to limit the position between the buffer cylinder and the support cylinder, thereby facilitating the installation and positioning of the buffer, and also facilitating the disassembly and maintenance of the buffer in the later stage.

[0034] 2. A heat dissipation mechanism is provided. The heat dissipation mechanism includes a cover plate, a heat dissipation copper sheet, a heat dissipation groove and an auxiliary plate. Through the setting of the heat dissipation mechanism, it can assist in dissipating the heat of the buffer outward during use, protecting the buffer, and thus extending the actual service life of the buffer.

[0035] 3. A support rod, a support plate and a connecting plate are provided. Through the setting of the support rod, support plate and connecting plate, it is convenient to assist in supporting and reinforcing the buffer during actual use, thereby further improving the stability of the buffer and preventing it from tipping over during use. Description of the Drawings

[0036] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 is a front view structural schematic diagram of the present invention;

[0038] Figure 3 is a front view sectional structural schematic diagram of the buffer rod, piston, buffer cylinder and outer cylinder of the present invention;

[0039] Figure 4 is a bottom view structural schematic diagram of the buffer rod, anti-collision plate, buffer spring and piston of the present invention;

[0040] Figure 5 is an exploded structural schematic diagram of the buffer rod, buffer cylinder and outer cylinder of the present invention;

[0041] Figure 6 This is a schematic exploded view of the buffer cylinder, piston and buffer rod of the present invention;

[0042] Figure 7 This is a schematic overall structure view of the buffer cylinder, support cylinder and mounting sleeve of the present invention;

[0043] Figure 8 This is the present invention Figure 7 The enlarged structure view at position A in;

[0044] Figure 9 This is a schematic exploded view of the mounting mechanism and positioning post of the present invention;

[0045] Figure 10 This is a front view structure view of the buffer cylinder, positioning post and support cylinder of the present invention;

[0046] Figure 11 This is a front view structure view of the buffer cylinder, outer cylinder, heat dissipation mechanism and support rod of the present invention;

[0047] Figure 12 This is a front view structure view of the support plate, support block and connecting plate of the present invention;

[0048] Figure 13 This is a rear view structure view of the support plate, convex block, support block, connecting plate and limiting plate of the present invention;

[0049] Figure 14 This is a schematic exploded view of the limiting plate, movable column, stop block and fixing bolt of the present invention.

[0050] In the figure: 1, base; 2, support cylinder; 3, rib plate; 4, buffer cylinder; 5, outer cylinder; 6, hydraulic oil filling hole; 7, buffer rod; 8, anti-collision plate; 9, buffer spring; 10, piston; 11, through hole; 12, mounting mechanism; 13, mounting sleeve; 14, mounting plate; 15, mounting rod; 16, mounting cap; 17, anti-detachment cap; 18, positioning post; 19, heat dissipation mechanism; 20, cover plate; 21, heat dissipation copper sheet; 22, heat dissipation groove; 23, auxiliary plate; 24, support rod; 25, support plate; 26, convex block; 27, support block; 28, connecting plate; 29, limiting plate; 30, movable column; 31, stop block; 32, fixing bolt. Detailed implementation manners

[0051] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0052] Please refer toFigures 1 - 14 , the present invention provides the following technical solutions:

[0053] Embodiment 1: In order to solve the problem that in the prior art, when installing between a buffer and a support seat, most of the installation methods rely on external installation tools and use bolts for installation and positioning, which is inconvenient for installation, disassembly and maintenance. Therefore, in this embodiment, through the following technical solutions, a hydraulic buffer for elevator safety braking and its buffering method are provided, which are provided with a base 1, a support cylinder 2, a rib plate 3, a buffer cylinder 4, an installation mechanism 12 and a positioning column 18. The support cylinder 2 is welded to the upper end of the base 1. The installation mechanisms 12 are symmetrically arranged at the left and right ends of the support cylinder 2, and the installation mechanism 12 includes an installation sleeve 13 sleeved outside the positioning column 18, mounting plates 14 fixedly connected to the front and rear ends of the installation sleeve 13, an installation rod 15 fixedly connected to the middle of the rib plate 3, a mounting cap 16 for limiting, and an anti-loosening cap 17 fitted outside the mounting cap 16. The installation rod 15 is inserted into the lower end of the mounting plate 14, and the installation rod 15 is threadedly connected to both the mounting cap 16 and the anti-loosening cap 17. The mounting cap 16 is in close fit with the lower end of the mounting plate 14;

[0054] As Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 9 and Figure 10 shown, the buffer cylinder 4 is inserted into the support cylinder 2. At the same time, the buffer cylinder 4 drives the positioning column 18 to be connected with the card slot between the support cylinder 2. Then, the installation sleeve 13 is sleeved outside the positioning column 18, and the positioning column 18 drives the mounting plate 14 to be sleeved outside the installation rod 15. Then, the mounting cap 16 and the anti-loosening cap 17 threadedly connected to the outer surface of the installation rod 15 are rotated. The mounting cap 16 is in a fitting arrangement with the mounting plate 14, and the anti-loosening cap 17 is in close fit with the mounting cap 16. The mounting cap 16 limits between the mounting plate 14 and the installation rod 15. Combined with the setting of the anti-loosening cap 17, the stability of the mounting cap 16 is further improved, preventing the mounting cap 16 from loosening. It has high stability, so that the buffer can be very conveniently installed and positioned, facilitating later disassembly and maintenance, and has high practicability;

[0055] Embodiment 2: For the existing hydraulic buffer for elevator safety braking and its buffering method, due to the very large impact force during impact and the lack of an auxiliary support mechanism to reinforce between the buffer and the support base, the stability of the buffer when subjected to the impact force is insufficient. Therefore, by setting a support rod 24, a support plate 25, a convex block 26, a support block 27, a connecting plate 28, a limiting plate 29, a movable column 30, a stop block 31 and a fixing bolt 32, a support rod 24 is arranged on the outer side of the cover plate 20, and the support rod 24 drives the heat dissipation mechanism 19 to form a flipping structure at the upper end of the base 1. The cover plate 20 is fixed to the outer cylinder 5 by bolts. The auxiliary plate 23 is rotatably connected to the upper end of the support rod 24, and the lower end of the support rod 24 is hinged to the support plate 25. The middle of the upper end of the support plate 25 is fixedly connected with a convex block 26, and the convex block 26 is snap-connected to the middle of the limiting plate 29. The limiting plate 29 is hinged to the front side of the connecting plate 28, and the middle of the connecting plate 28 is snap-connected with the support plate 25. The outer side of the support plate 25 is snap-connected with a support block 27 in a "T" shape, and the support block 27 is fixedly connected to the connecting plate 28. The rear end of the connecting plate 28 is rotatably connected with a movable column 30, and the rotation angle range between the movable column 30 and the connecting plate 28 is 0 - 90º. A torsion spring is arranged at the connection between the connecting plate 28 and the movable column 30, and stop blocks 31 are fixedly connected to both the left and right ends of the movable column 30. The stop blocks 31 and the limiting plate 29 are locked by a fixing bolt 32, and both between the fixing bolt 32 and the stop block 31 and between the fixing bolt 32 and the limiting plate 29 are threadedly connected;

[0056] Such as Figure 1 , Figure 12 , Figure 13 and Figure 14As shown in the figure, after the buffer is installed, place the support plate 25 at the middle of the upper end of the connecting plate 28. The support plate 25 is snap-connected with the support block 27. Then rotate the movable column 30 to 90°. At this time, the movable column 30 rotates with the connecting plate 28, and the torsion spring at the connection between the movable column 30 and the connecting plate 28 undergoes elastic deformation. Flip the limiting plate 29, and the limiting plate 29 rotates on the side of the connecting plate 28. The limiting plate 29 presses and limits the support plate 25. At the same time, the limiting plate 29 is snap-connected with the convex block 26, and the limiting plate 29 is connected with the movable column 30 through a card slot. Then directly release the movable column 30. At this time, the torsion spring restores elastic deformation, drives the movable column 30 to rotate, so that the movable column 30 drives the stop block 31 to be in a fitting setting with the limiting plate 29, thereby facilitating the limitation between the limiting plate 29 and the connecting plate 28. Then rotate the fixing bolt 32, and the fixing bolt 32 limits between the stop block 31 and the limiting plate 29, locks between the stop block 31 and the limiting plate 29, and prevents the loosening between the limiting plate 29 and the connecting plate 28. Then rotate the support rod 24, and the support rod 24 rotates on the upper end of the support plate 25, so that the support rod 24 drives the heat dissipation mechanism 19 to flip. The upper end of the support rod 24 rotates with the auxiliary plate 23, so that the cover plate 20 covers the outside of the outer cylinder 5. Then limit between the cover plate 20 and the outer cylinder 5 through bolts, thereby facilitating the auxiliary support for the outer cylinder 5, and further improving the stability of the entire buffer.

[0057] Embodiment 3: The existing hydraulic buffer for elevator safety braking and its buffering method generate a large amount of heat during the braking buffering process. Most of the heat is directly dissipated outward. The buffer lacks a heat dissipation component for auxiliary efficient heat dissipation, and the heat dissipation effect is poor, affecting the actual service life of the buffer. Therefore, by setting the outer cylinder 5, hydraulic oil filling hole 6, buffer rod 7, anti-collision plate 8, buffer spring 9, piston 10, through hole 11 and heat dissipation mechanism 19, the upper end of the buffer cylinder 4 is slidably connected with the buffer rod 7, and the lower end of the buffer rod 7 is fixedly connected with the piston 10. The piston 10 is telescopically connected in the cavity inside the buffer cylinder 4. Hydraulic oil is provided at the lower end of the cavity inside the buffer cylinder 4. The outer surface of the buffer cylinder 4 is fixed with the outer cylinder 5, and the upper end of the outer cylinder 5 is provided with the hydraulic oil filling hole 6. The side wall of the buffer cylinder 4 is provided with through holes 11 at equal angles, and the buffer cylinder 4 is communicated with the outer cylinder 5 through the through holes 11. Positioning columns 18 are welded on both the left and right sides of the lower end of the buffer cylinder 4, and the positioning columns 18 are connected with the support cylinder 2 through a card slot. Rib plates 3 are welded on both the front and rear ends of the support cylinder 2. The upper end of the buffer rod 7 is fixedly connected with the anti-collision plate 8, and buffer springs 9 are arranged at equal angles between the anti-collision plate 8 and the buffer cylinder 4. The heat dissipation mechanisms 19 are symmetrically arranged on both the left and right sides of the outer cylinder 5. The heat dissipation mechanism 19 includes a cover plate 20 covering the outside of the outer cylinder 5, heat dissipation copper sheets 21 fixedly connected to the inner side of the cover plate 20, heat dissipation grooves 22 opened on the cover plate 20, and an auxiliary plate 23 fixedly connected to the middle of the outer side of the cover plate 20. The heat dissipation copper sheets 21 are attached to the outer side surface of the outer cylinder 5;

[0058] Such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 11As shown in the figure, when the elevator impacts the anti-collision plate 8, the anti-collision plate 8 squeezes the buffer spring 9, causing the buffer spring 9 to deform, which can achieve the buffer effect of movement. At this time, the anti-collision plate 8 drives the buffer rod 7 to slide at the upper end of the buffer cylinder 4, so that the buffer rod 7 drives the piston 10 to move in the cavity inside the buffer cylinder 4. At this time, the piston 10 squeezes the hydraulic oil, so that the hydraulic oil at the bottom of the cavity inside the buffer cylinder 4 flows out through the through hole 11 at the lower end of the buffer cylinder 4 and enters the outer cylinder 5, and the lubricating oil in the outer cylinder 5 enters the cavity at the upper end inside the buffer cylinder 4 through the through hole 11 at the upper end of the buffer cylinder 4 from the outer cylinder 5, realizing the function of buffer protection for the elevator. The heat dissipation copper sheet 21 is attached to the outer surface of the outer cylinder 5, and the heat generated during the whole process can be better dissipated outward through the heat dissipation copper sheet 21 and the heat dissipation groove 22, greatly improving the actual heat dissipation effect, protecting the buffer, thus extending the service life of the buffer. Moreover, after use, when the extrusion on the anti-collision plate 8 is released, at this time the buffer spring 9 restores its deformation, pushing the anti-collision plate 8 to drive the buffer rod 7 to move upward. At this time, the piston 10 moves upward, so that the hydraulic oil in the cavity at the upper end inside the buffer cylinder 4 enters the cavity at the lower end inside the buffer cylinder 4 through the through hole 11 at the upper end from the outer cylinder 5 through the through hole ll at the lower end of the buffer cylinder 4, realizing the return of the hydraulic oil.

[0059] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, it will not be elaborated here.

[0060] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A hydraulic buffer for elevator safety braking, comprising a base (1), a support cylinder (2) welded to the upper end of the base (1), and a buffer cylinder (4) inserted and installed in the middle of the support cylinder (2); Among them, A buffer rod (7) is slidably connected to the upper end of the buffer cylinder (4), and a piston (10) is fixedly connected to the lower end of the buffer rod (7). The piston (10) is telescopically connected in the cavity inside the buffer cylinder (4), and hydraulic oil is provided at the lower end of the cavity inside the buffer cylinder (4); It is characterized in that it further includes: An installation mechanism (12), the installation mechanism (12) is symmetrically arranged at the left and right ends of the support cylinder (2), and the installation mechanism (12) is used for installing and positioning between the support cylinder (2) and the buffer cylinder (4). The installation mechanism (12) drives the buffer cylinder (4) to form a disassembly structure in the middle of the support cylinder (2); A heat dissipation mechanism (19), the heat dissipation mechanism (19) is symmetrically arranged on the left and right sides of the outer cylinder (5). The heat dissipation mechanism (19) includes a cover plate (20) covering the outside of the outer cylinder (5), a heat dissipation copper sheet (21) fixedly connected to the inner side of the cover plate (20), a heat dissipation groove (22) opened on the cover plate (20), and an auxiliary plate (23) fixedly connected to the middle of the outer side of the cover plate (20). The heat dissipation copper sheet (21) is attached to the outer side surface of the outer cylinder (5). The auxiliary plate (23) is rotatably connected to the upper end of a support rod (24), and the lower end of the support rod (24) is hingedly connected to a support plate (25). A convex block (26) is fixedly connected to the middle of the upper end of the support plate (25), and the convex block (26) is snap-connected to the middle of a limit plate (29). The limit plate (29) is hingedly connected to the front side surface of a connecting plate (28), and the middle of the connecting plate (28) is snap-connected to the support plate (25). The outer side of the support plate (25) is snap-connected to a support block (27) in a "T" - shaped structure, and the support block (27) is fixedly connected to the connecting plate (28); Among them, a support rod (24) is arranged on the outer side of the cover plate (20), and the support rod (24) drives the heat dissipation mechanism (19) to form a flipping structure on the upper end of the base (1). The cover plate (20) and the outer cylinder (5) are fixed by bolts.

2. The hydraulic buffer for elevator safety braking according to claim 1, characterized in that: An outer cylinder (5) is fixed to the outer surface of the buffer cylinder (4), and a hydraulic oil filling hole (6) is installed at the upper end of the outer cylinder (5). Through holes (11) are equiangularly opened on the side wall of the buffer cylinder (4), and the buffer cylinder (4) is communicated with the outer cylinder (5) through the through holes (11). Positioning columns (18) are welded to the left and right sides of the lower end of the buffer cylinder (4), and the positioning columns (18) are connected to the support cylinder (2) through a card slot; Among them, rib plates (3) are welded to the front and rear ends of the support cylinder (2).

3. A hydraulic buffer for elevator safety braking according to claim 1, characterized in that: The upper end of the buffer rod (7) is fixedly connected to a collision - proof plate (8), and buffer springs (9) are equiangularly arranged between the collision - proof plate (8) and the buffer cylinder (4).

4. A hydraulic buffer for elevator safety braking according to claim 1, characterized in that: The installation mechanism (12) includes an installation sleeve (13) sleeved outside the positioning column (18), mounting plates (14) fixedly connected to the front and rear ends of the installation sleeve (13), a mounting rod (15) fixedly connected to the middle of the rib plate (3), a mounting cap (16) for limiting, and an anti - detachment cap (17) fitted outside the mounting cap (16).

5. A hydraulic buffer for elevator safety braking according to claim 4, characterized in that: The mounting rod (15) is inserted into the lower end of the mounting plate (14), and the mounting rod (15) is thread - connected to both the mounting cap (16) and the anti - detachment cap (17). The mounting cap (16) is in close contact with the lower end of the mounting plate (14).

6. The hydraulic buffer for elevator safety braking according to claim 1, characterized in that: A movable column (30) is rotatably connected to the rear end of the connecting plate (28), and the rotation angle range between the movable column (30) and the connecting plate (28) is 0 - 90º. A torsion spring is provided at the connection between the connecting plate (28) and the movable column (30), and blocks (31) are fixedly connected to both the left and right ends of the movable column (30). Among them, the block (31) and the limiting plate (29) are locked by a fixing bolt (32), and the fixing bolt (32) is thread - connected to both the block (31) and the limiting plate (29).

7. A method for using a hydraulic buffer for elevator safety braking as described in claim 1, characterized in that: The usage method of the hydraulic buffer for elevator safety braking includes the following steps: Step 1: The buffer cylinder (4) is stably installed at the upper end of the support cylinder (2) through the installation mechanism (12), which is convenient for maintenance and repair; Step 2: The buffer cylinder (4) and the outer cylinder (5) can be supported and reinforced by the support rod (24), the support plate (25) and the connecting plate (28), improving the stability of the buffer during use; Step 3: The anti - collision plate (8) and the buffer rod (7) drive the piston (10) to move telescopically in the inner cavity of the buffer cylinder (4), squeezing the hydraulic oil. Combined with the setting of the buffer spring (9), the elevator can be buffered; Step 4: Through the setting of the heat dissipation mechanism (19), the heat generated by the buffer can be more efficiently dissipated to the outside, extending the service life of the buffer.

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