CN213679842U

CN213679842U - Hydraulic automatic control system for graphitized internal series furnace conductive trolley

Info

Publication number: CN213679842U
Application number: CN202021274795.2U
Authority: CN
Inventors: 谈嘉豪
Original assignee: Qingdao Yibo Copper Group Co ltd
Current assignee: Qingdao Yibo Copper Group Co ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-07-13
Anticipated expiration: 2030-07-03

Abstract

The utility model relates to a string stove technical field in the graphitization, specifically speaking relates to a string stove electrically conducts dolly hydraulic pressure automatic control system in graphitization. It includes the backup pad, the backup pad top is close to the edge and is provided with the mounting panel, the mounting panel surface is provided with hydraulic rod, the sliding of backup pad surface is provided with strutting arrangement, strutting arrangement includes arc groove and last arc groove down, it passes through bolt thread fastening with arc groove down to go up the arc groove hydraulic rod tailpiece of the piston rod portion, the backup pad bottom is provided with the base, the base includes the bottom plate, the bottom plate is close to center department and is provided with the nut, nut internal thread is provided with the screw rod, the screw rod tip rotates the setting and is in the backup pad bottom, arc groove outer wall is provided with the slide down, the slide bottom is rotated and is provided with two gyro wheels, the utility model discloses can finely tune the height, and can support hydraulic.

Description

Hydraulic automatic control system for graphitized internal series furnace conductive trolley

Technical Field

The utility model relates to a cluster stove technical field in the graphitizing furnace, specifically speaking relates to a cluster stove electrically conducts dolly hydraulic pressure automatic control system in graphitization.

Background

The series furnaces in the graphitization furnace are resistance furnace production equipment of an ultra-high-power graphite electrode, a power transmission trolley is connected with a copper-aluminum conducting bar to be connected with two furnaces in series to roast products in the furnace, after the products are electrified by large current, the electric energy is converted into heat energy by using the resistance of the products in the furnace, and the products in the furnace are graphitized; the power transmission trolley is a series connection conductive device which is connected with the left graphitization furnace and the right graphitization furnace, a hydraulic system is utilized to carry out telescopic control on copper flexible connection on the trolley, the left furnace and the right furnace are powered off when the trolley contracts, the left furnace and the right furnace are connected in series to reach a power transmission state when the trolley stretches, the traditional graphitizing electrode inner series connection furnace is used for propping against a copper plate through four bidirectional oil cylinders to enable the two graphitization furnaces to be in a pressurization state when the two graphitization furnaces are used, the copper plate is separated from the graphitization furnaces when the two graphitization furnaces reach a certain time, and then;

however, when the hydraulic push rod piston rod on the current conductive trolley stretches out and draws back, the hydraulic push rod piston rod is not supported due to the fact that the hydraulic push rod piston rod stretches out and draws back in the air, the hydraulic push rod piston rod is prone to shaking, the controlled effect is poor, the current graphitized internal series furnace conductive trolley is worn and aged due to long-time running, the hydraulic push rod is prone to shifting, the height is inconvenient to finely adjust, and the use state is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a string stove electrically conductive dolly hydraulic pressure automatic control system in graphitization to solve the problem that provides among the above-mentioned background art.

For realizing the above-mentioned purpose, the utility model provides a string stove electrically conductive dolly hydraulic pressure automatic control system in graphitization, including backup pad 1, the backup pad top is close to the edge and is provided with the mounting panel, the mounting panel surface is provided with hydraulic rod, the sliding of backup pad surface is provided with strutting arrangement, strutting arrangement includes lower arc groove and last arc groove, it passes through bolt thread fastening with lower arc groove to go up the arc groove and is in hydraulic rod piston rod tip, the backup pad bottom is provided with the base, the base includes the bottom plate, the bottom plate is close to center department and is provided with the nut, nut internal thread is provided with the screw rod, the screw rod tip rotates the setting and is in the backup pad bottom.

As a further improvement of the technical scheme, a sliding plate is arranged on the outer wall of the lower arc groove, and two rollers are rotatably arranged at the bottom of the sliding plate.

As a further improvement of the technical scheme, a sliding groove is formed in the top of the supporting plate close to the center, the sliding plate is arranged inside the sliding groove in a sliding mode, and the roller is arranged at the bottom of the inner cavity of the sliding groove in a rolling mode.

As a further improvement of the technical scheme, spring seats are arranged between the supporting plate and the bottom plate and close to the corners, and universal wheels are arranged at the bottom of the bottom plate and close to the corners.

As a further improvement of the technical scheme, an oil cylinder is arranged at the end part of the hydraulic push rod.

As a further improvement of the technical solution, the hydraulic push rod includes a hydraulic system, the hydraulic system includes a pressure regulating circuit module, an unloading circuit module, a pressure reducing circuit module, a pressure increasing circuit module and a balance circuit module, the pressure regulating circuit module is used for setting and limiting the highest working pressure of the hydraulic system, or enabling the actuator to realize multi-stage pressure transformation at different stages of the working process, the unloading circuit module is used for not frequently starting the prime mover to enable the pump to operate under a small output power when the hydraulic system actuator does not work for a short time, the pressure reducing circuit module is used for enabling a certain branch of the system to have a stable working pressure lower than the system pressure setting value, the pressure increasing circuit module is used for enabling a certain branch of the system to obtain a supply of oil with a higher system pressure and a small flow rate, and the balance circuit module is used for enabling the loop of the actuator to maintain a certain back pressure, so as to balance the gravity load and prevent the gravity load from falling down by self.

As a further improvement of the technical scheme, the pressure regulating loop module is a single-stage pressure regulating loop, the unloading loop module is a reversing valve unloading loop, the pressure reducing loop module is a single-stage pressure reducing loop, the pressurizing loop module is a pressurizing loop of a pressurizing cylinder, and the balancing loop module is a balancing loop of a one-way sequence valve.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in this electrically conductive dolly hydraulic pressure automatic control system of cluster stove in graphitization, through setting up strutting arrangement, when the hydraulic pressure push rod piston rod slides, through bolted connection between lower arc groove and the last arc groove, fix hydraulic pressure push rod piston rod tip on strutting arrangement, along with the slip of hydraulic pressure push rod piston rod, drive strutting arrangement and slide in the backup pad surface, avoid the hydraulic pressure push rod piston rod to vacate the sky and slide and rock, influence normal use.

2. In this string stove electrically conductive dolly hydraulic pressure automatic control system in graphitization, through setting up the base, string stove electrically conductive dolly is ageing owing to long-time operation wearing and tearing in graphitization, twists the screw rod, makes the screw thread of screw rod outer wall slide from top to bottom along the inside screw thread of nut, drives the backup pad and slides from top to bottom, and convenient fine setting height guarantees that the user state is best.

Drawings

FIG. 1 is a first schematic view of the overall structure of embodiment 1;

FIG. 2 is a second drawing showing the overall structure of embodiment 1;

FIG. 3 is a structural exploded view of the supporting device of embodiment 1;

FIG. 4 is a schematic view of the structure of a base according to embodiment 1;

FIG. 5 is an operational diagram of a single-stage regulator circuit of embodiment 1;

FIG. 6 is an operation diagram of the unloading circuit of the reversing valve in the embodiment 1;

FIG. 7 is a diagram showing the operation of the single-stage pressure reducing circuit of example 1;

FIG. 8 is a pressurizing circuit operation diagram of the pressurizing cylinder of embodiment 1;

FIG. 9 is a diagram of the balancing circuit operation of the one-way sequence valve of embodiment 1.

The various reference numbers in the figures mean:

1. a support plate; 11. mounting a plate; 12. a chute; 2. a hydraulic push rod; 3. an oil cylinder; 4. a support device; 41. a lower arc groove; 42. an upper arc groove; 43. a slide plate; 44. a roller; 5. a base; 51. a base plate; 52. a spring seat; 53. a nut; 54. A screw; 55. a universal wheel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Example 1

Referring to fig. 1-4, the present embodiment provides a hydraulic automatic control system for a graphitizing internal furnace string conductive trolley, which includes a support plate 1, a mounting plate 11 is disposed near an edge of a top of the support plate 1, a hydraulic push rod 2 is disposed on a surface of the mounting plate 11, a support device 4 is slidably disposed on a surface of the support plate 1, the support device 4 includes a lower arc groove 41 and an upper arc groove 42, the upper arc groove 42 and the lower arc groove 41 are fixed at an end of a piston rod of a hydraulic push rod 2 through a bolt and a thread, when a piston rod of the hydraulic push rod 2 slides, the outer wall of the piston rod of the hydraulic push rod 2 is aligned through the lower arc groove 41 and the upper arc groove 42, the lower arc groove 41 and the upper arc groove 42 are connected through a bolt, the end of the piston rod of the hydraulic push rod 2 is fixed on the support device 4, the support device 4 is driven to slide, the piston rod of the hydraulic push rod 2 can be prevented from jumping and sliding to affect normal use.

Specifically, the outer wall of the lower arc groove 41 is provided with a sliding plate 43, the bottom of the sliding plate 43 is rotatably provided with two rollers 44, the top of the support plate 1 is provided with a sliding groove 12 near the center, the sliding plate 43 is slidably arranged inside the sliding groove 12, the rollers 44 are rotatably arranged at the bottom of the inner cavity of the sliding groove 12, and the support device 4 slides on the surface of the support plate 1, so that the rollers 44 roll at the bottom of the inner cavity of the sliding groove 12, and the bottom of the sliding plate 43 is prevented.

Further, 1 bottom in the backup pad is provided with base 5, base 5 includes bottom plate 51, bottom plate 51 is close to center department and is provided with nut 53, nut 53 internal thread is provided with screw rod 54, screw rod 54 tip rotates and sets up in 1 bottom in the backup pad, the cluster stove electrically conductive trolley is ageing because long-time operation wearing and tearing in graphitization, screw rod 54 is twisted, make the screw thread of screw rod 54 outer wall slide from top to bottom along the inside screw thread of nut 53, it raises or reduces to drive backup pad 1, the terrain clearance of backup pad 1 is conveniently finely tuned, guarantee that the user state is best, clockwise rotation screw rod 54, make the screw thread of screw rod 54 outer wall along nut 53 rebound, drive backup pad 1 rebound, make backup pad 1 raise, avoid wearing and tearing to lead to whole height to reduce.

Specifically, all be provided with spring holder 52 near the corner between backup pad 1 and the bottom plate 51, through setting up spring holder 52, when receiving the striking vibration, the spring compression of spring holder 52, under the effect of spring holder 52 elasticity, the destruction of buffering rigidity impact, bottom plate 51 bottom all is provided with universal wheel 55 near the corner.

Besides, the end of the hydraulic push rod 2 is provided with an oil cylinder 3.

It is worth to say that the hydraulic push rod 2 comprises a hydraulic system, and the hydraulic system comprises a pressure regulating loop module, an unloading loop module, a pressure reducing loop module, a pressure increasing loop module and a balance loop module;

the pressure regulating loop module is used for regulating and limiting the highest working pressure of the hydraulic system, or enabling the actuating mechanism to realize multi-stage pressure conversion at different stages in the working process, and the pressure regulating loop module is a single-stage pressure regulating loop, and as shown in fig. 5, the single-stage pressure regulating loop can be formed by connecting the hydraulic pump and the overflow valve in parallel; the output pressure of the pump can be changed by adjusting the pressure of the overflow valve; when the set pressure of the overflow valve is determined, the hydraulic pump operates at the set pressure of the overflow valve. Therefore, the pressure regulation and the pressure stabilization control of the hydraulic system are realized; if the hydraulic pump is changed into a variable pump, the overflow valve is used as a safety valve, the working pressure of the hydraulic pump is lower than the set pressure of the overflow valve, the overflow valve does not work, when the system fails and the working pressure of the hydraulic pump rises, once the pressure reaches the set pressure of the overflow valve, the overflow valve is opened, and the working pressure of the hydraulic pump is limited under the set pressure of the overflow valve, so that the hydraulic system is not damaged due to pressure overload, and the hydraulic system is protected;

the unloading loop module is used for enabling the pump to run under a small output power without frequently starting a prime motor when an execution element of the hydraulic system does not work for a short time, the unloading loop module is a reversing valve unloading loop, as shown in figure 6, the unloading loop module is an unloading loop of an electro-hydraulic reversing valve with an M-shaped neutral position function, the pressure impact is small when the loop is switched, but a check valve is required to be arranged in the loop so that the system can keep the pressure of about 0.3MPa for operating a control oil circuit,

the pressure reducing loop module is used for enabling a certain branch of the system to have stable working pressure lower than a system pressure setting value, the pressure reducing loop module is a single-stage pressure reducing loop, as shown in fig. 7, a one-way valve in the loop prevents oil from flowing backwards when the pressure of a main oil way is reduced (lower than the pressure adjusted by a pressure reducing valve), a short-time pressure maintaining effect is achieved, and two-stage or multi-stage pressure reduction can be achieved in the pressure reducing loop by adopting a method similar to two-stage or multi-stage pressure adjustment;

the pressurizing loop module is used for enabling a certain branch in the system to obtain oil liquid supply with higher pressure and small flow compared with the system, the pressurizing loop module is a pressurizing loop of a pressurizing cylinder, as shown in fig. 8, by utilizing a single-action pressurizing loop of the pressurizing cylinder, when the system works at the position shown in the figure, the oil supply pressure p1 of the system enters a large piston cavity of the pressurizing cylinder, and the required higher pressure p2 can be obtained in a small piston cavity; when the two-position four-way electromagnetic directional valve is connected to the system at the right position, the booster cylinder returns, and oil in the auxiliary oil tank is supplemented into the small piston through the one-way valve, so that the circuit can only be intermittently boosted, and is called as a single-action boosting circuit;

the balancing loop module is used for keeping a certain back pressure value on a loop of the actuating element to balance gravity load, so that the gravity load cannot fall down automatically due to self weight, and the balancing loop module is a balancing loop of the one-way sequence valve, as shown in fig. 9, when the piston descends after the 1YA is electrified, a certain back pressure exists on an oil return path; the piston can fall smoothly as long as the back pressure is adjusted to support the dead weight of the piston and the working part connected with the piston. When the reversing valve is in the middle position, the piston stops moving and does not move downwards continuously. The power loss of the loop is large when the piston moves downwards quickly, and the piston and the working part connected with the piston can fall slowly due to the leakage of the one-way sequence valve and the reversing valve when the piston is locked, so that the loop is only suitable for occasions with small weight of the working part and low positioning requirement when the piston is locked.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a string stove electrically conductive dolly hydraulic pressure automatic control system in graphitization, includes backup pad (1), its characterized in that: backup pad (1) top is close to the edge and is provided with mounting panel (11), mounting panel (11) surface is provided with hydraulic rod (2), backup pad (1) surface slip is provided with strutting arrangement (4), strutting arrangement (4) are including arc groove (41) and last arc groove (42) down, it fixes through bolt screw thread with arc groove (41) down to go up arc groove (42) hydraulic rod (2) piston rod tip, backup pad (1) bottom is provided with base (5), base (5) are including bottom plate (51), bottom plate (51) are close to center department and are provided with nut (53), nut (53) inside screw thread is provided with screw rod (54), screw rod (54) tip rotates and sets up backup pad (1) bottom.

2. The graphitizing inner series furnace conductive trolley hydraulic automatic control system according to claim 1, characterized in that: the outer wall of the lower arc groove (41) is provided with a sliding plate (43), and the bottom of the sliding plate (43) is rotatably provided with two rollers (44).

3. The graphitizing inner series furnace conductive trolley hydraulic automatic control system according to claim 2, characterized in that: the top of the supporting plate (1) is provided with a sliding groove (12) close to the center, the sliding plate (43) is arranged inside the sliding groove (12) in a sliding mode, and the roller (44) is arranged at the bottom of the inner cavity of the sliding groove (12) in a rolling mode.

4. The graphitizing inner series furnace conductive trolley hydraulic automatic control system according to claim 1, characterized in that: spring seats (52) are arranged between the supporting plate (1) and the bottom plate (51) and close to corners, and universal wheels (55) are arranged at the bottom of the bottom plate (51) and close to corners.

5. The graphitizing inner series furnace conductive trolley hydraulic automatic control system according to claim 1, characterized in that: and an oil cylinder (3) is arranged at the end part of the hydraulic push rod (2).

6. The graphitizing inner series furnace conductive trolley hydraulic automatic control system according to claim 1, characterized in that: the hydraulic push rod (2) comprises a hydraulic system, and the hydraulic system comprises a pressure regulating loop module, an unloading loop module, a pressure reducing loop module, a pressurizing loop module and a balancing loop module.

7. The graphitizing inner series furnace conductive trolley hydraulic automatic control system according to claim 6, characterized in that: the pressure regulating loop module is a single-stage pressure regulating loop, the unloading loop module is a reversing valve unloading loop, the pressure reducing loop module is a single-stage pressure reducing loop, the pressurizing loop module is a pressurizing loop of a pressurizing cylinder, and the balancing loop module is a balancing loop of a one-way sequence valve.