CN214330296U

CN214330296U - Floor spring

Info

Publication number: CN214330296U
Application number: CN202022174505.3U
Authority: CN
Inventors: 周伟; 章国银; 黄少祥; 林新量
Original assignee: Zhejiang Dunhaosi Hardware Ind Co ltd
Current assignee: Zhejiang Dunhaosi Hardware Ind Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-10-01
Anticipated expiration: 2030-09-28

Abstract

The utility model relates to a door closer technical field discloses a floor spring, including casing (1), piston (2) that can remove about in casing (1), spring (3) that one end and piston (2) offset, the inside cam (4) that is equipped with of one end of casing (1), mounting hole (5) have been seted up in piston (2), be equipped with in mounting hole (5) combination valve (6) with mounting hole (5) looks adaptation, the inside that piston (2) are close to cam (4) one end is equipped with piston connecting seat (7), be equipped with camshaft (9) of being connected with cam (4) on cam (4), the other end inside of casing (1) is equipped with power adjusting device (10) that offsets with the spring (3) other end. The utility model has the advantages that the combined valve is arranged in the piston, thereby improving the safety of the technology; meanwhile, the mounting space inside the shell is saved, the mounting space is reserved for the force adjusting device, and the force and the speed for opening and closing the door can be adjusted conveniently.

Description

Floor spring

Technical Field

The utility model relates to a door closing device technical field especially relates to a floor spring.

Background

The gate control floor spring mainly comprises hydraulic oil, a machine body, a spring and a piston to form a hydraulic buffer device. The power comes from a compression spring built in the machine body, the spring force drives a connecting rod through a piston, the connecting rod drives a wheel shaft core, so that a door shaft is driven to rotate, and the door shaft is positioned by the contact of a cam sleeved on the wheel shaft core and a positioning wheel. In the movement process, the piston transmits power to hydraulic oil, and the hydraulic oil flows to the right cavity of the machine body through an oil way arranged on the machine body, the left cavity of the machine body and the regulating valve. According to the prior art, a check valve and a safety valve of a piston are separated, the structure is complicated, the check valve is sealed by steel balls, leakage is easy, and the sealing performance is poor; the safety valve is sealed by steel balls and springs. The steel ball is arranged on the safety valve, and the volume is larger. Chinese utility model patent CN97215359.4 discloses a floor spring, it includes casing, base, places connecting rod, spring, piston, bearing housing in the base, lower movable plate, axis of rotation, go up the movable plate, sealed lid, pin, end cover, governing valve, sealing screw, pedestal mounting is in the casing, big apron of facial make-up and little apron, places butterfly seal circle and retainer plate in its characterized in that sealed lid, and ball and inserted block are placed to piston center through-hole, have two recesses to inlay into two O type sealing washers on the piston circumference. The floor spring in the above patent is simple in structure, so that the elastic force of the spring cannot be adjusted, the door closing speed cannot be adjusted, and the piston is easily impacted to cause damage to the piston when the door is closed strongly.

Disclosure of Invention

The utility model discloses to life weak point among the prior art, can not adjust the speed shortcoming of closing the door, provide a long service life, can adjust the speed floor spring of closing the door.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

the utility model provides a floor spring, which comprises a housin, the piston that can remove about in the casing, the spring that one end and piston offset, the inside cam that is equipped with of one end of casing, the piston is located the one end that is close to the cam in the casing, the mounting hole has been seted up in the piston, be equipped with the combination valve with mounting hole looks adaptation in the mounting hole, the inside that the piston is close to cam one end is equipped with the piston connecting seat, piston and piston connecting seat pass through the piston connecting pin and connect, the piston connecting pin wear to establish in piston and piston connecting seat and with piston threaded connection, be equipped with the camshaft of being connected with the cam on the cam, the camshaft drives the cam synchronous rotation, the cam rotates and promotes piston connecting seat lateral shifting in the casing, the other end inside of casing is equipped with the accent power device that offsets with the spring other end. The combined valve is arranged in the piston, when the piston moves rightwards quickly, hydraulic oil penetrates through the combined valve to release a part of hydraulic pressure, the piston is protected when the door is closed strongly quickly, and the use safety of the technology is improved; meanwhile, the mounting space inside the shell is saved, the mounting space is reserved for the force adjusting device, the tightness of the spring is conveniently adjusted, and therefore the force and the speed for opening and closing the door are adjusted.

Preferably, a front roller is arranged between the piston connecting seat and the cam, the cam and the piston connecting seat are abutted to the front roller, an upper clamping plate and a lower clamping plate are respectively arranged on two sides of the front roller, the upper clamping plate and the lower clamping plate are connected through a connecting screw, and the connecting screw is arranged in the front roller in a penetrating mode. Set up preceding roller between cam and piston connecting seat, promote the piston connecting seat and remove when the cam rotates, reduce the wearing and tearing of cam and piston connecting seat, improve the life of the inside spare part of this technique.

Preferably, the combination valve comprises a valve body and a valve core penetrating through the valve body, a plug and a compression spring are arranged in the valve core, one end, close to the cam, of the valve core is provided with a flow hole, the plug abuts against the flow hole, one end, far away from the cam, of the valve core is provided with a stop rod penetrating through the valve core, and two ends of the compression spring abut against the plug and the stop rod respectively. For preventing that external force from causing the damage to casing internals, when the piston moved left, when hydraulic pressure was greater than compression spring's elasticity, the end cap was jack-up to the right to some hydraulic oil in piston left side, flowed to the piston right side through case inside, played the guard action to each part in the casing, placed the damage of inside casing internals.

Preferably, a bushing abutting against the end part of the valve body far away from one end of the cam is arranged in the mounting hole, the gear lever is positioned in the bushing, and a filter screen connected with the bushing is arranged at one end of the bushing far away from the valve core. The filter screen is arranged at the end part of the bushing, hydraulic oil flowing in the shell is filtered, impurities in the shell driven by the flowing of the hydraulic oil are adsorbed on the filter screen when passing through the filter screen, and the stability of the hydraulic oil when flowing is guaranteed.

Preferably, the force adjusting device comprises a force adjusting screw rod arranged transversely and a force adjusting screw sheet sleeved on the force adjusting screw rod, the force adjusting screw sheet is in threaded connection with the force adjusting screw rod and transversely moves on the force adjusting screw rod, and the other end of the spring abuts against the force adjusting screw sheet. The force-adjusting screw piece moves left and right on the force-adjusting screw rod to adjust the elasticity of the spring, so that the moving speed of the piston in the shell is adjusted, and the aim of controlling the door closing speed is fulfilled.

Preferably, a rear roller is further provided inside one end of the housing to abut against the cam, and the front roller and the rear roller are respectively located on both sides of the cam. When the cam rotates, the rear roller is abutted against the cam, and the stability of the cam during rotation is improved.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: the combined valve is arranged in the piston, when the piston moves rightwards quickly, hydraulic oil penetrates through the combined valve to release a part of hydraulic pressure, the piston is protected when the door is closed strongly quickly, and the use safety of the technology is improved; meanwhile, the mounting space inside the shell is saved, the mounting space is reserved for the force adjusting device, the tightness of the spring is conveniently adjusted, and therefore the force and the speed for opening and closing the door are adjusted.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the present invention.

Fig. 3 is a partially enlarged schematic view of the M portion in fig. 2.

The names of the parts indicated by the numerical references in the drawings are as follows: the hydraulic pressure-regulating valve comprises a shell 1, a piston 2, a spring 3, a cam 4, a mounting hole 5, a combined valve 6, a piston connecting seat 7, a piston connecting pin 8, a cam shaft 9, a force regulating device 10, a front roller 11, an upper clamping plate 12, a lower clamping plate 13, a connecting screw 14, a valve body 15, a valve core 16, a plug 17, a flow hole 18, a stop lever 19, a lining 20, a filter screen 21, a force regulating screw 22, a force regulating screw piece 23, a rear roller 24, a sealing ring 25 and a compression spring 26.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

A floor spring, as shown in figures 1 to 3, comprises a shell 1, a piston 2 capable of moving left and right in the shell 1, and a spring 3 with one end abutting against the piston 2, wherein a cam 4 is arranged inside one end of the shell 1, the piston 2 is arranged at one end of the shell 1 close to the cam 4, a mounting hole 5 is arranged in the piston 2, a combination valve 6 matched with the mounting hole 5 is arranged in the mounting hole 5, a piston connecting seat 7 is arranged inside one end of the piston 2 close to the cam 4, the piston 2 and the piston connecting seat 7 are connected through a piston connecting pin 8, the piston connecting pin 8 is arranged in the piston 2 and the piston connecting seat 7 in a penetrating way and in threaded connection with the piston 2, the upper end of the piston connecting pin 8 is in threaded connection with the upper end of the piston connecting seat 7, a cam shaft 9 connected with the cam 4 is arranged on the cam 4, the cam shaft 9 drives the cam 4 to rotate synchronously, the cam 4 rotates to push the piston connecting seat 7 to move transversely in the shell 1, the other end of the shell 1 is internally provided with a force adjusting device 10 which is pressed against the other end of the spring 3.

Be equipped with preceding roller 11 between piston connecting seat 7 and the cam 4, cam 4 and piston connecting seat 7 all offset with preceding roller 11, and the both sides of preceding roller 11 are equipped with punch holder 12 and lower plate 13 respectively, and punch holder 12 and lower plate 13 pass through connecting screw 14 to be connected, and connecting screw 14 wears to establish in preceding roller 11, and preceding roller 11 rotates between punch holder 12 and lower plate 13.

The combination valve 6 comprises a valve body 15 and a valve core 16 penetrating through the valve body 15, a hydraulic oil flow channel is formed in the valve core 16, a plug 17 and a compression spring 26 are arranged in the valve core 16, the plug 17 and the compression spring 26 are both positioned in the hydraulic oil flow channel, one end of the valve core 16 close to the cam 4 is provided with a flow hole 18, the plug 17 abuts against the flow hole 18, one end of the valve core 16 far away from the cam 4 is provided with a stop rod 19 penetrating through the valve core 16, and two ends of the compression spring 26 abut against the plug 17 and the stop rod 19 respectively. And a sealing ring 25 is sleeved on one end of the valve core 16 close to the cam 4, and the sealing ring 25 is positioned between the valve core and the valve body 15.

Example 2

In the floor spring according to embodiment 1, as shown in fig. 1 to 3, a bush 20 is provided in an installation hole 5 so as to abut against an end of a valve body 15 away from one end of a cam 4, a stopper rod 19 is provided in the bush 20, and a filter net 21 connected to the bush 20 is provided at one end of the bush 20 away from a valve body 16. The force adjusting device 10 comprises a force adjusting screw 22 and a force adjusting screw piece 23, wherein the force adjusting screw piece 22 is transversely arranged, the force adjusting screw piece 23 is sleeved on the force adjusting screw 22, the force adjusting screw piece 23 is in threaded connection with the force adjusting screw 22 and transversely moves on the force adjusting screw 22, and the other end of the spring 3 abuts against the force adjusting screw piece 23.

Example 3

As shown in fig. 1 to 3, in embodiment 2, a rear roller 24 is further provided inside one end of the housing 1 to abut against the cam 4, and the front roller 11 and the rear roller 24 are respectively located on the front and rear sides of the cam 4.

When the valve is used, the force adjusting screw rod 22 is rotated, the force adjusting screw piece 23 moves to a corresponding position on the force adjusting screw rod 22, the elastic force of the spring 3 is adjusted, when the door is opened, the cam shaft 9 and the cam 4 synchronously rotate, the cam 4 pushes the piston 2 to move rightwards, when the door is closed, the spring 3 pushes the piston 2 to move leftwards, when the hydraulic pressure on the left side of the piston 2 is larger than the elastic force of the compression spring 26, the plug 17 is pushed open, and hydraulic oil flows rightwards through the interior of the valve core 16.

Claims

1. The utility model provides a floor spring, includes casing (1), can move about in casing (1) piston (2), spring (3) that one end and piston (2) offset, the inside cam (4) that are equipped with of one end of casing (1), its characterized in that: piston (2) are located the one end that is close to cam (4) in casing (1), mounting hole (5) have been seted up in piston (2), be equipped with in mounting hole (5) combination valve (6) with mounting hole (5) looks adaptation, the inside that piston (2) are close to cam (4) one end is equipped with piston connecting seat (7), piston (2) and piston connecting seat (7) are connected through piston connecting pin (8), piston connecting pin (8) wear to establish in piston (2) and piston connecting seat (7) and with piston (2) threaded connection, be equipped with camshaft (9) of being connected with cam (4) on cam (4), camshaft (9) drive cam (4) synchronous rotation, cam (4) rotate and promote piston connecting seat (7) lateral shifting in casing (1), the other end inside of casing (1) is equipped with the accent power device (10) that offsets with the spring (3) other end.

2. A floor spring according to claim 1, wherein: be equipped with preceding roller (11) between piston connecting seat (7) and cam (4), cam (4) and piston connecting seat (7) all offset with preceding roller (11), and the both sides of preceding roller (11) are equipped with punch holder (12) and lower plate (13) respectively, and punch holder (12) and lower plate (13) are connected through connecting screw (14), and connecting screw (14) are worn to establish in preceding roller (11).

3. A floor spring according to claim 1, wherein: the combination valve (6) comprises a valve body (15) and a valve core (16) arranged in the valve body (15) in a penetrating mode, a plug (17) and a compression spring (26) are arranged in the valve core (16), one end, close to the cam (4), of the valve core (16) is provided with a flow hole (18), the plug (17) is abutted against the flow hole (18), one end, far away from the cam (4), of the valve core (16) is provided with a stop rod (19) penetrating through the valve core (16), and two ends of the compression spring (26) are abutted against the plug (17) and the stop rod (19) respectively.

4. A floor spring as claimed in claim 3, wherein: a bushing (20) which is abutted against the end part of the valve body (15) far away from one end of the cam (4) is arranged in the mounting hole (5), the stop lever (19) is positioned in the bushing (20), and a filter screen (21) connected with the bushing (20) is arranged at one end of the bushing (20) far away from the valve core (16).

5. A floor spring according to claim 1, wherein: the force adjusting device (10) comprises a force adjusting screw rod (22) and a force adjusting screw sheet (23), the force adjusting screw rod (22) is transversely arranged, the force adjusting screw sheet (23) is in threaded connection with the force adjusting screw rod (22) and transversely moves on the force adjusting screw rod (22), and the other end of the spring (3) is abutted to the force adjusting screw sheet (23).

6. A floor spring according to claim 2, wherein: a rear roller (24) which is abutted against the cam (4) is further arranged in one end of the shell (1), and the front roller (11) and the rear roller (24) are respectively positioned on two sides of the cam (4).