CN219194111U

CN219194111U - Hydraulic buffer of elevator

Info

Publication number: CN219194111U
Application number: CN202320305525.0U
Authority: CN
Inventors: 魏于评; 郑休宁; 谭蓉凡; 罗伟强
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-06-16
Anticipated expiration: 2033-02-23

Abstract

The application discloses a hydraulic buffer of an elevator, which comprises a plunger rod, a cylinder body and a lower base, wherein the lower base comprises a base body and a sealing seat, the base body is of a shell structure, and the cylinder body is positioned at the inner side of the base body; the piston rod is provided with a piston head at one end, the other end of the piston rod is provided with a crashed head, the piston rod is movably connected with the cylinder body through the piston head, the sealing seat seals a gap between the piston rod and the seat body, the piston rod is sleeved with a spring, one end of the spring is propped against the crashed head, the other end of the spring is propped against the sealing seat, the spring is sleeved with a flexible dustproof sleeve, the inner diameter of the flexible dustproof sleeve is smaller than or equal to the outer diameter of the spring, and the lower base, the crashed head and the flexible dustproof sleeve are combined to form a closed area. The flexible dust boot in this application can block the dust to reduce the dust that adheres to the plunger rod surface and scrape the condition of the seal structure of hydraulic buffer.

Description

Hydraulic buffer of elevator

Technical Field

The present application relates to the field of buffers, and in particular to hydraulic buffers for elevators.

Background

The hydraulic buffer of the elevator mainly comprises a lower base, a plunger rod, a cylinder body, a spring and the like, wherein the plunger rod is movably connected with the cylinder body through a piston head, the cylinder body is arranged on the inner side of the lower base, and the lower base is sealed with the plunger rod through a sealing structure. In the working process of the hydraulic buffer, the plunger rod moves relative to the cylinder body, dust is unavoidably attached to the position of the plunger rod outside the lower base, and although the sealing structure between the lower base and the plunger rod can prevent the dust from entering hydraulic oil in the lower base, the dust attached to the surface of the plunger rod still can scratch the sealing structure along with the movement of the plunger rod, so that the abrasion of the sealing structure is accelerated, and the sealing performance of the sealing structure is influenced.

Disclosure of Invention

In order to reduce the dust adhering to the surface of the plunger rod from scraping the sealing structure of the hydraulic buffer, the application provides the hydraulic buffer of the elevator.

The hydraulic buffer of the elevator provided by the application adopts the following technical scheme:

the hydraulic buffer of the elevator comprises a plunger rod, a cylinder body and a lower base, wherein the lower base comprises a base body and a sealing seat, the base body is of a shell structure, and the cylinder body is positioned at the inner side of the base body; the piston rod is characterized in that a piston head is arranged at one end of the piston rod, a crashed head is arranged at the other end of the piston rod, the piston rod is movably connected with the cylinder body through the piston head, the sealing seat seals a gap between the piston rod and the seat body, a spring is sleeved on the piston rod, the crashed head is propped against one end of the spring, the other end of the spring is propped against the sealing seat, a flexible dustproof cover is sleeved on the spring, the inner diameter of the flexible dustproof cover is smaller than or equal to the outer diameter of the spring, and the lower base, the crashed head and the flexible dustproof cover are enclosed to form a sealing area.

Through adopting above-mentioned technical scheme, flexible dirt proof boot cover takes place elastic deformation when locating the spring, makes flexible sheath hold tightly the spring to make flexible sheath be in the state of stably wrapping up the spring, lower base, the head that bumps and flexible dirt proof boot enclose and form the enclosed area, can reduce the dust in the air and adhere to the surface of plunger rod, be favorable to reducing the scraping effect that the sealing surface to the seal seat formed in the plunger rod removal process. In addition, when carrying out cleaning maintenance to the hydraulic buffer of elevator, the plunger rod is located the position outside the lower base and has the problem of difficult cleanness under the hindrance of spring, blocks the dust through setting up flexible dirt proof boot, can reduce the clean frequency of plunger rod, makes the maintenance work of the hydraulic buffer of elevator comparatively easily go on.

Optionally, the flexible dust-proof cover is a rubber leather cover.

Through adopting above-mentioned technical scheme, rubber leather sheath is as flexible dirt proof boot, and rubber leather sheath has great elasticity, and comparatively easily take place elastic deformation when the spring is located to rubber leather sheath cover, can form great friction damping between rubber leather sheath and the spring simultaneously to be favorable to making and be connected comparatively stably between flexible dirt proof boot and the spring.

Optionally, a receiving portion extends from one end of the dust cover near the crashed head in a direction near the center of the dust cover.

Through adopting above-mentioned technical scheme, the internal diameter of binding off portion is less than the internal diameter at flexible dirt proof boot main part position, makes binding off portion can be as the locating part of cup jointing the in-process between flexible dirt proof boot and the spring, is favorable to controlling along axial relative position between flexible dirt proof boot and the spring.

Optionally, the one end that is close to the plunger rod by the head that bumps is equipped with annular bulge, annular bulge encircles the plunger rod sets up, the spring housing is located annular bulge, the spring extends to the direction that is close to self center and is provided with the joint section, annular bulge is equipped with and is used for dodging the breach of joint section.

Through adopting above-mentioned technical scheme, the joint section of spring forms the joint effect with the bellied breach of annular, makes the relative position between spring and the head that bumps into comparatively stable, is favorable to reducing the spring and rotates around self axis, is favorable to reducing the close up portion of flexible dirt proof boot and removes the condition that rubs the head that bumps into, is favorable to protecting the receipts oral area.

Optionally, a mounting ring is sleeved at one end of the spring close to the lower base, and one end of the flexible dust cover close to the lower base is sleeved on the mounting ring.

Through adopting above-mentioned technical scheme, the collar is located to flexible dustproof sheath cover, compares in the helical coil of spring, and annular structure's collar can make the one end that flexible dustproof cover is close to the lower base be difficult for taking off, is favorable to making the installation state of flexible dustproof cover keep stable.

Optionally, the flexible dust cover is provided with ventilation holes, the flexible dust cover is provided with a filter cotton sheet, and the filter cotton sheet shields the ventilation holes.

Through adopting above-mentioned technical scheme, when rubber leather sheath moves and flexible deformation along with receiving the head, the space size in the rubber leather sheath changes to make the inside and the external circulation that produces of rubber leather sheath, the outside air of rubber leather sheath receives the filter effect of filter cotton piece when getting into the rubber leather sheath inboard, is favorable to reducing the dust and gets into the rubber leather sheath inboard.

Optionally, a plurality of ventilation holes are formed, and the filter cotton piece shields a plurality of ventilation holes at the same time.

Through adopting above-mentioned technical scheme, under the certain prerequisite of effective ventilative area of bleeder vent, the quantity of bleeder vent sets up to a plurality ofly, is favorable to increasing the total edge profile length of bleeder vent to the weakening effect of seting up bleeder vent to flexible dirt proof boot intensity is reduced.

Optionally, the outer peripheral surface of the flexible dust cover is provided with a sandwich layer sheet, the sandwich layer sheet is in a frame-shaped structure, and the filter cotton sheet is positioned between the sandwich layer sheet and the outer peripheral surface of the flexible dust cover.

Through adopting above-mentioned technical scheme, the cotton piece of filtration is installed between intermediate layer piece and flexible dirt proof boot, makes and forms detachable connection between cotton piece of filtration and the flexible dirt proof boot to change cotton piece of filtration as required.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the lower base, the crashed head and the flexible dust-proof cover are enclosed to form a closed area, so that dust in air can be reduced from adhering to the surface of the plunger rod. By arranging the flexible dust-proof sleeve to block dust, the cleaning frequency of the plunger rod can be reduced, so that the maintenance work of the hydraulic buffer of the elevator is easier to carry out.

2. The inner diameter of the closing-in part is smaller than that of the main body part of the flexible dust cover, so that the closing-in part can be used as a limiting part in the sleeving process between the flexible dust cover and the spring, and the axial relative position between the flexible dust cover and the spring can be controlled.

Drawings

Fig. 1 is an overall cross-sectional view of the present embodiment.

Fig. 2 is a schematic diagram of the present embodiment for embodying a filter cotton sheet.

Reference numerals illustrate:

1. a lower base; 11. a base; 12. a sealing seat; 2. a cylinder; 3. a plunger rod; 31. a piston head; 32. a crashed head; 321. an annular protrusion; 322. a notch; 4. a spring; 41. a clamping section; 5. a flexible dust boot; 51. a receiving portion; 52. ventilation holes; 6. a mounting ring; 7. filtering cotton sheets; 8. a laminated sheet.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-2.

The embodiment of the application discloses a hydraulic buffer of an elevator. Referring to fig. 1, the hydraulic buffer of an elevator comprises a lower base 1, a cylinder 2 and a plunger rod 3, wherein the lower base 1 comprises a base 11 and a sealing seat 12, the base 11 is of a shell structure, one end of the plunger rod 3 extends into the base 11, and the sealing seat 12 seals a gap between the plunger rod 3 and the base 11; the cylinder body 2 is located the pedestal 11 inboard, and the one end that the plunger rod 3 stretches into in the pedestal 11 is equipped with piston head 31, and plunger rod 3 passes through piston head 31 and cylinder body 2 swing joint, and the one end that the plunger rod 3 is located the pedestal 11 outside is equipped with receives the ram 32, and plunger rod 3 cover is equipped with spring 4, and the one end of spring 4 is supported and is accepted ram 32, and the other end of spring 4 is supported and is accepted seal seat 12, and spring 4 receives the pre-compaction effect.

Referring to fig. 1, the end of the crashed head 32 near the plunger rod 3 is provided with an annular protrusion 321, the annular protrusion 321 is arranged around the plunger rod 3, the spring 4 is sleeved on the annular protrusion 321, the spring 4 is provided with a clamping section 41 extending towards the direction near the center of the spring 4, the annular protrusion 321 is provided with a notch 322 for avoiding the clamping section 41, and a clamping effect is formed between the clamping section 41 of the spring 4 and the notch 322 of the annular protrusion 321, so that the spring 4 is difficult to rotate around the axis of the spring 4, and the position of the spring 4 is kept stable.

Referring to fig. 1, a flexible dust cover 5 is sleeved on a spring 4, the flexible dust cover 5 is a rubber leather cover made of rubber materials, the inner diameter of the flexible dust cover 5 is smaller than or equal to the outer diameter of the spring 4, the flexible dust cover 5 is elastically deformed when sleeved on the spring 4, so that the flexible sheath tightly holds the spring 4, a closed area is formed by surrounding a lower base 1, a crashed head 32 and the flexible dust cover 5, and dust in air is not easy to adhere to a plunger rod 3.

In other embodiments, the flexible dust cover 5 may be made of a material such as cloth, nonwoven fabric, or plastic film.

Referring to fig. 1, the end of the flexible dust cover 5 near the crashed head 32 is provided with a closing portion 51 extending obliquely in a direction near the center thereof, and the inside diameter of the closing portion 51 is smaller than the inside diameter of the main body portion of the flexible dust cover 5. In the process of sleeving the flexible dust cover 5 into the spring 4, the closing-in part 51 can be used as a limiting structure for controlling the axial position between the flexible dust cover 5 and the spring 4.

Referring to fig. 1, one end of the spring 4 near the lower base 1 is sleeved with a mounting ring 6, one end of the flexible dust cover 5 near the lower base 1 is sleeved with the mounting ring 6, and the end of the flexible dust cover is sleeved with the mounting ring 6, so that the mounting state of the flexible dust cover can be more stable compared with that of the spring 4.

Referring to fig. 1 and 2, the flexible dust cover 5 is provided with a plurality of ventilation holes 52, the flexible dust cover 5 is provided with a filter cotton sheet 7, and the filter cotton sheet 7 shields the plurality of ventilation holes 52 at the same time. When the space inside the flexible sheath changes in the moving process of the plunger rod 3, the air inside and outside the flexible sheath is circulated, and the air is filtered by the filter cotton sheet 7 when passing through the filter cotton sheet 7 and the ventilation holes 52, so that dust in the air is reduced to enter the flexible sheath.

Referring to fig. 2, the outer peripheral surface of the flexible dust-proof cover 5 is provided with an interlayer sheet 8, the material of the interlayer sheet 8 is the same as that of the flexible dust-proof cover 5, the interlayer sheet 8 is in a frame-shaped structure, the outline size of the inner edge of the interlayer sheet 8 is smaller than the outline size of the filter cotton sheet 7, the edges of the two opposite sides of the interlayer sheet 8 are adhered and fixed with the flexible dust-proof sheath, an interlayer space for installing the filter cotton sheet 7 is formed between the filter cotton sheet 7 and the flexible dust-proof sheath, and detachable connection is formed between the filter cotton sheet 7 and the flexible dust-proof sheath, so that the filter cotton sheet 7 can be conveniently replaced according to needs.

The implementation principle of the hydraulic buffer of the elevator of the embodiment of the application is as follows: the lower base 1, the crashed head 32 and the flexible dust cover 5 are surrounded to form a closed area, so that dust in air can be reduced from adhering to the surface of the plunger rod 3, and scraping action on the sealing surface of the sealing seat 12 in the moving process of the plunger rod 3 can be reduced. In addition, when cleaning and maintaining the hydraulic buffer of the elevator, the part of the plunger rod 3 outside the lower base 1 is difficult to maintain under the obstruction of the spring 4, and the flexible dust-proof sleeve 5 is arranged to block dust, so that the maintenance frequency of the plunger rod 3 can be reduced, and the maintenance work of the hydraulic buffer of the elevator is easier to carry out.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The hydraulic buffer of the elevator comprises a plunger rod (3), a cylinder body (2) and a lower base (1), wherein the lower base (1) comprises a base body (11) and a sealing seat (12), the base body (11) is of a shell structure, and the cylinder body (2) is positioned at the inner side of the base body (11); one end of plunger rod (3) is equipped with piston head (31), the other end of plunger rod (3) is equipped with receives and bumps head (32), plunger rod (3) through piston head (31) with cylinder body (2) swing joint, sealing seat (12) sealed plunger rod (3) with clearance between pedestal (11), plunger rod (3) cover is equipped with spring (4), the one end of spring (4) is supported and is accepted and bump head (32), its characterized in that: the other end butt of spring (4) seal receptacle (12), spring (4) cover is equipped with flexible dirt proof boot (5), the internal diameter of flexible dirt proof boot (5) is less than or equal to the external diameter of spring (4), lower base (1), bumped head (32) and flexible dirt proof boot (5) surround and form the enclosed area.

2. The hydraulic buffer of an elevator according to claim 1, characterized in that: the flexible dustproof sleeve (5) is a rubber leather sleeve.

3. The hydraulic buffer of an elevator according to claim 1, characterized in that: one end of the flexible dust cover (5) close to the crashed head (32) extends to a direction close to the center of the flexible dust cover, and a closing-in part (51) is arranged at the end of the flexible dust cover.

4. The hydraulic buffer of an elevator according to claim 1, characterized in that: the one end that is close to plunger rod (3) by head that bumps (32) is equipped with annular bulge (321), annular bulge (321) encircle plunger rod (3) sets up, spring (4) cover are located annular bulge (321), spring (4) are provided with joint section (41) to the direction extension near self center, annular bulge (321) are equipped with and are used for dodging breach (322) of joint section (41).

5. The hydraulic buffer of an elevator according to claim 1, characterized in that: one end of the spring (4) close to the lower base (1) is sleeved with a mounting ring (6), and one end of the flexible dustproof sleeve (5) close to the lower base (1) is sleeved with the mounting ring (6).

6. The hydraulic buffer of an elevator according to claim 1, characterized in that: the flexible dustproof cover (5) is provided with ventilation holes (52), the flexible dustproof cover (5) is provided with a filter cotton piece (7), and the filter cotton piece (7) shields the ventilation holes (52).

7. The hydraulic buffer of an elevator of claim 6, wherein: the air holes (52) are formed in a plurality of ways, and the filter cotton sheets (7) cover the air holes (52) at the same time.

8. The hydraulic buffer of an elevator of claim 6, wherein: the outer peripheral surface of the flexible dustproof sleeve (5) is provided with an interlayer sheet (8), the interlayer sheet (8) is of a frame-shaped structure, and the filter cotton sheet (7) is positioned between the interlayer sheet (8) and the outer peripheral surface of the flexible dustproof sleeve (5).