CN115744734A - Operation panel of fork truck - Google Patents

Abstract

The invention discloses an operation platform of a forklift, which is characterized by comprising: seat, adjusting device and two operating handle that set up respectively in the both sides of seat, operating handle includes: a swivel arm having a first hinge and a second hinge; a manipulation seat having a third hinge and a fourth hinge; one end of the first connecting rod is hinged with the first hinge part, and the other end of the first connecting rod is hinged with the third hinge part; and one end of the second connecting rod is hinged with the second hinged part, the other end of the second connecting rod is hinged with the fourth hinged part, and the distance from the first hinged part to the second hinged part is equal to the distance from the third hinged part to the fourth hinged part. The angle of the control seat of the invention is not changed all the time in the process of height adjustment, so that the buttons, knobs and the like on the control seat always face the direction convenient for operators to control.

Description

Operation panel of fork truck

Technical Field

The invention relates to the technical field of forklifts, in particular to an operating console of a forklift.

Background

The console of a forklift generally includes an operation handle, a seat, and the like, and is used for controlling the operation handle when an operator sits on the seat or stands to control various motions of the forklift.

However, the operation console of the existing forklift has the following defects: firstly, the occupied space of the seat causes interference on the legs of the operator when the operator stands; secondly, after the seat is adjusted in height, the operating handle also needs to be adjusted in height to keep a relatively determined position with the seat, but the operating handle is generally rotated to realize height adjustment, so that the orientation of the operating handle is changed during height adjustment, and the operating handle cannot be kept at an angle which is most suitable for an operator to control; thirdly, two operating handles are respectively arranged at two sides of the seat, and the distance between the two operating handles can not be adjusted, so that part of operators can not operate the two handles simultaneously in a comfortable posture, and the safety is also influenced.

Disclosure of Invention

In view of the above disadvantages in the prior art, the technical problem to be solved by the present invention is to provide a forklift console, which is used for solving the problems of inconvenient adjustment of the forklift console in the prior art.

The technical scheme adopted by the invention for solving the technical problems is that the operating platform of the forklift comprises:

a chair comprising a seat and a back rotatably connected;

two operating handle set up respectively the both sides of seat, every operating handle includes: a swivel arm having a first hinge and a second hinge; the control seat is provided with a third hinge part and a fourth hinge part; one end of the first connecting rod is hinged with the first hinge part, and the other end of the first connecting rod is hinged with the third hinge part; a second connecting rod, one end of which is hinged with the second hinge part, the other end of which is hinged with the fourth hinge part, and the distance from the first hinge part to the second hinge part is equal to the distance from the third hinge part to the fourth hinge part;

the adjusting device comprises an adjusting rod and two adjusting pipes which are slidably connected with the adjusting rod, the adjusting rod is arranged below the seat and rotatably connected with the seat, and each adjusting pipe is fixedly connected with one end of the rotating arm far away from the control seat.

Further, the first hinge, the second hinge, the third hinge and the fourth hinge are respectively positioned at the vertex of a parallelogram.

Further, the operating handle has a first state and a second state;

when the first hinge part is in the first state, a connecting line of the first hinge part and the third hinge part is parallel to the horizontal direction, and a connecting line of the second hinge part and the fourth hinge part is parallel to the horizontal direction;

when the first hinge part is in the first state, the connecting line of the first hinge part and the third hinge part is parallel to the vertical direction, and the connecting line of the second hinge part and the fourth hinge part is parallel to the vertical direction.

Further, the method also comprises the following steps:

the fixing frame is provided with a first connecting part and a second connecting part;

the adjusting frame is provided with a third connecting part and a fourth connecting part, and the adjusting rod is rotatably connected with the adjusting frame;

one end of the third connecting rod is hinged with the first connecting part, and the other end of the third connecting rod is hinged with the third connecting part;

and one end of the fourth connecting rod is hinged with the second connecting part, and the other end of the fourth connecting rod is hinged with the fourth connecting part.

Furthermore, the chair seat is provided with a first surface and a second surface which are opposite to each other, and the second surface is provided with an auxiliary backrest; the chair is provided with a third state and a fourth state, and the chair seat is rotated to be switched between the third state and the fourth state; wherein, in the third state, the first surface of the chair seat faces upwards and the second surface faces downwards; in a fourth state, the first surface abuts against the chair back, and the auxiliary backrest is positioned on one side, far away from the chair back, of the chair seat;

the chair also comprises a lifting assembly which comprises a lifting oil cylinder, wherein the lifting oil cylinder stretches and retracts to adjust the height of the chair.

The lifting frame is detachably connected with the chair back, and the lifting oil cylinder is connected with the lifting frame;

the connecting plate is provided with a first fixing part, a rotating part and a second fixing part, the first fixing part is fixed with the chair seat, and the rotating part is hinged with the chair back;

the extension rod is detachably connected with the second fixing part;

and one end of the telescopic cylinder is hinged with the lifting frame, and the other end of the telescopic cylinder is hinged with the extension rod.

Further, a fifth state is provided between the third state and the fourth state, in the fifth state, the second fixing portion and the telescopic cylinder are in the same straight line, and when the third state or the fourth state is switched to the fifth state, the telescopic cylinder is compressed.

Furthermore, two end parts of the adjusting rod are respectively provided with a connecting section, and the connecting section is provided with a plurality of adjusting holes along the length direction; each adjusting pipe is connected with one connecting section in a sliding mode, and the side wall of each adjusting pipe is provided with at least one through hole;

the adjusting device is characterized by further comprising at least two adjusting screws, wherein each adjusting screw is arranged on one adjusting pipe respectively, and the adjusting screws penetrate through the through holes and the adjusting holes simultaneously so as to limit the adjusting pipes to slide relative to the adjusting rods.

Furthermore, a sleeve is fixedly connected to the outer wall of the adjusting pipe and is communicated with the through hole;

the adjusting screw rod penetrates through the sleeve, and the adjusting screw rod slides relative to the sleeve to stretch into or withdraw from the through hole and the adjusting hole.

Furthermore, a first limiting ring and a second limiting ring are arranged on the inner wall of the sleeve in an inward protruding mode;

the outer wall of the adjusting screw rod is provided with a butting ring in an outward protruding mode, a spring is sleeved on the adjusting screw rod, one end of the spring abuts against the butting ring, and the other end of the spring abuts against the first limiting ring;

the adjusting screw rod is provided with a first position and a second position, the abutting ring abuts against the second limiting ring when the adjusting screw rod is at the first position, and the adjusting screw rod penetrates through the sleeve, the through hole and the adjusting hole; and when the support ring is at the second position, the abutting ring is separated from the second limiting ring, and the adjusting screw rod exits from the adjusting hole or exits from the adjusting hole and the through hole simultaneously.

Compared with the prior art, the invention has at least the following beneficial effects:

(1) The two connecting rods are hinged to the two ends of the rotating arm and the two ends of the control seat at the same time. When the height of the control seat needs to be adjusted, the first connecting rod rotates by taking the first hinge part as a shaft, and then the third hinge part can be lifted; when the first connecting rod rotates, the second connecting rod can be driven to rotate by taking the second hinge part as an axis, so that when the height of the third hinge part is changed, the height of the fourth hinge part is changed, the relative positions of the third hinge part and the fourth hinge part are kept fixed, the angle of the control seat in the lifting process is ensured not to be changed all the time, and finally, a button, a knob and the like on the control seat face towards the direction (approximately upwards) which is convenient for an operator to control all the time.

(2) The adjusting rod is arranged, the adjusting pipe is slidably connected to the connecting section at the two ends of the adjusting rod, the two handles are respectively connected with the two adjusting pipes, the adjusting pipe slides relative to the adjusting rod, the distance between the two handles can be adjusted, and then the two handles are enabled to be simultaneously located at the proper positions of arms of an operator, so that the two handles can be simultaneously operated by the two hands of the operator.

(3) According to the chair, the auxiliary backrest is additionally arranged below the chair seat, and in a third state, the auxiliary backrest is hidden below the chair seat, so that the space of legs is not occupied; the height of the seat can be adjusted through the extension and retraction of the lifting oil cylinder, so that an operator can observe goods at a proper position conveniently; in the fourth state, the first surface of the seat is in contact with the chair back, the seat is folded, the auxiliary backrest faces to the operator, and the operator is prevented from being invaded by the auxiliary backrest; simultaneously, the auxiliary backrest can also support the back of an operator, so that the operator can stand more stably, the observation height of the operator is improved, and the safety is enhanced.

Drawings

FIG. 1 is a schematic structural view of an exemplary console;

FIG. 2 is a schematic structural view of an operating handle in the embodiment;

FIG. 3 is a schematic structural diagram of a fixing frame, an adjusting frame and an operating handle in the embodiment;

FIG. 4 is a schematic structural view of a seat in the embodiment;

FIG. 5 is a schematic structural view of an operating handle and an adjusting device in the embodiment;

FIG. 6 is an exploded view of the adjusting device in the embodiment;

FIG. 7 is a schematic view of the structure of an adjusting tube in the embodiment;

FIG. 8 is a sectional view of an adjusting device in the embodiment;

in the figure:

100. an operating handle; 110. an operating seat; 111. a third hinge; 112. a fourth hinge portion; 120. a rotating arm; 121. a first hinge portion; 122. a second hinge portion; 130. a first link; 140. a second link; 150. an adjusting bracket; 160. a fixed mount; 170. a third link; 180. a fourth link;

200. a seat; 210. a chair back; 220. a chair seat; 230. an auxiliary backrest; 240. a connecting plate; 241. an extension rod; 250. a telescopic cylinder; 260. a lifting frame; 270. a lift cylinder;

300. an adjustment device; 310. adjusting a rod; 311. a connection section; 312. an adjustment hole; 320. an adjusting tube; 321. a sleeve; 321a, a first limit ring; 321b and a second limit ring;

322. a through hole; 330. adjusting the screw rod; 331. a butting ring; 340. a spring.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

Referring to fig. 1 to 8, the present invention discloses an operation console of a forklift, including:

a chair 200 comprising a seat 220 and a back 210 rotatably coupled together;

two operation handles 100 respectively provided at both sides of the seat 200, each operation handle 100 including: a rotating arm 120 having a first hinge 121 and a second hinge 122; a manipulation seat 110 having a third hinge 111 and a fourth hinge 112; a first link 130 having one end hinged to the first hinge 121 and the other end hinged to the third hinge 111; a second link 140 having one end hinged to the second hinge 122 and the other end hinged to the fourth hinge 112, wherein the distance from the first hinge 121 to the second hinge 122 is equal to the distance from the third hinge 111 to the fourth hinge 112;

the adjusting device 300 comprises an adjusting lever 310 and two adjusting pipes 320 slidably connected to the adjusting lever 310, wherein the adjusting lever 310 is disposed below the seat 220 and rotatably connected to the seat 200, and each adjusting pipe 320 is fixedly connected to one end of the rotating arm 120 far away from the control seat 110.

Specifically, referring to fig. 2, the present invention is provided with a first link 130 and a second link 140, both of which are hinged to both ends of the rotating arm 120 and the manipulation seat 110. When the height of the manipulation seat 110 needs to be adjusted, the first link 130 rotates around the first hinge 121, so that the third hinge 111 can be lifted; the first link 130 rotates and simultaneously drives the second link 140 to rotate around the second hinge 122, so that when the height of the third hinge 111 changes, the height of the fourth hinge 112 also changes, because the distance from the first hinge 121 to the second hinge 122 is equal to the distance from the third hinge 111 to the fourth hinge 112, the rotation angle of the first link 130/the second link 140 relative to the rotation arm 120 is equal to the rotation angle of the manipulation seat 110 relative to the first link 130/the second link 140, and the rotation direction of the first link 130/the second link 140 relative to the rotation arm 120 is opposite to the rotation direction of the manipulation seat 110 relative to the first link 130/the second link 140, so that the rotation angle of the manipulation seat 110 relative to the rotation arm 120 is kept constant.

Referring to fig. 5-8, the present application further includes an adjusting rod 310, and adjusting tubes 320 are slidably connected to connecting sections 311 at two ends of the adjusting rod 310, so that the two handles are respectively connected to the two adjusting tubes 320, and the adjusting tubes 320 slide relative to the adjusting rod 310, so as to adjust the distance between the two handles, and further, the two handles are simultaneously located at suitable positions of the arms of the operator, so that the operator can operate the two handles with both hands.

Further, the first hinge 121, the second hinge 122, the third hinge 111 and the fourth hinge 112 are respectively at the vertex of a parallelogram.

Specifically, the first hinge 121, the second hinge 122, the third hinge 111 and the fourth hinge 112 are respectively located at the vertex of a parallelogram, such that the connecting lines between the four hinges form a parallelogram. It can be known that the rotating arm 120, the console base 110, the first link 130 and the second link 140 can form a parallel four-bar linkage structure, and the first link 130 and the second link 140 are always parallel when rotating, so as to ensure that the orientation (angle) of the console base 110 is not changed during the height adjustment process, so that an operator can control the buttons and knobs on the console base 110 when standing.

Further, referring to fig. 2-3, the operating handle 100 has a first state and a second state;

in the first state, a connecting line of the first hinge 121 and the third hinge 111 is parallel to the horizontal direction, and a connecting line of the second hinge 122 and the fourth hinge 112 is parallel to the horizontal direction;

in the second state, a line connecting the first hinge 121 and the third hinge 111 is parallel to the vertical direction, and a line connecting the second hinge 122 and the fourth hinge 112 is parallel to the vertical direction.

In the first state, the connection line between the first hinge 121 and the third hinge 111 is horizontal, the connection line between the second hinge 122 and the fourth hinge 112 is horizontal, and the height of the console 110 is low, and the first link 130 and the second link 140 (which may further include a housing covering the first link 130 and the second link 140) are used as armrests on which the arms of the operator can lean against to control the console 110.

In the second state, the connection line between the first hinge 121 and the third hinge 111 is vertical, and the connection line between the second hinge 122 and the fourth hinge 112 is vertical, so that the height of the console 110 is raised to the highest, which is convenient for the operator to stand.

Further, referring to fig. 3, the method further includes:

the fixing frame 160 is provided with a first connecting part and a second connecting part;

the adjusting bracket 150 is provided with a third connecting part and a fourth connecting part, and the adjusting rod 310 is rotatably connected with the adjusting bracket 150;

one end of the third connecting rod 170 is hinged to the first connecting part, and the other end of the third connecting rod 170 is hinged to the third connecting part;

and one end of the fourth connecting rod 180 is hinged to the second connecting part, and the other end of the fourth connecting rod 180 is hinged to the fourth connecting part.

Specifically, the height of the entire manipulation handle 100 can be adjusted by the height adjustment of the adjustment bracket 150 with respect to the fixed bracket 160. Two ends of the third connecting rod and two ends of the fourth connecting rod 180 are respectively located at four end points of a parallelogram, and the third connecting rod 170 and the fourth connecting rod 180 rotate simultaneously to adjust the height of the adjusting frame 150, and simultaneously, the orientation of the control seat 110 on the adjusting frame 150 is kept unchanged all the time.

Further, referring to fig. 4, the seat 220 has a first surface and a second surface opposite to each other, and the second surface is provided with an auxiliary backrest 230; the chair 200 has a third state and a fourth state, and the chair seat 220 is rotated to be switched between the third state and the fourth state; in the third state, the first surface of the seat 220 faces upward and the second surface faces downward; in the fourth state, the first surface is against the backrest 210, and the auxiliary backrest 230 is located at a side of the seat 220 away from the backrest 210;

and the lifting assembly comprises a lifting cylinder 270, and the lifting cylinder 270 extends and retracts to adjust the height of the chair 200.

According to the chair, the auxiliary backrest 230 is additionally arranged below the chair seat 220, and in the third state, the auxiliary backrest 230 is hidden below the chair seat 220, so that the leg space is not occupied; the height of the seat 200 can be adjusted by the extension and contraction of the lifting oil cylinder 270, so that an operator can observe goods at a proper position conveniently; in the fourth state, the first surface of the seat 220 contacts the backrest 210, the seat 220 is retracted, and the auxiliary backrest 230 faces the operator to prevent intrusion into the standing space of the operator; meanwhile, the auxiliary backrest 230 can also support the back of the operator, so that the operator can stand more stably, the observation height of the operator is increased, and the safety is enhanced.

Further, referring to fig. 4, the chair further includes a lifting frame 260, the lifting frame 260 is detachably connected to the chair back 210, and the lifting cylinder 270 is connected to the lifting frame 260;

a connecting plate 240, wherein the connecting plate 240 has a first fixing portion, a rotating portion and a second fixing portion, the first fixing portion is fixed with the chair seat 220, and the rotating portion is hinged with the chair back 210;

an extension bar 241 detachably connected to the second fixing portion;

and one end of the telescopic cylinder 250 is hinged with the lifting frame 260, and the other end of the telescopic cylinder 250 is hinged with the extension rod 241.

Further, a fifth state is provided between the third state and the fourth state, in the fifth state, the second fixing portion and the telescopic cylinder 250 are in the same line, and when the third state or the fourth state is switched to the fifth state, the telescopic cylinder 250 is compressed.

Specifically, in the fifth state, the second fixing portion and the telescopic cylinder 250 are in the same straight line, so that the compression amount of the telescopic cylinder 250 by the extension rod 241 is maximized, the length of the telescopic cylinder 250 is minimized, and the force applied to the telescopic cylinder is maximized.

When the fifth state is switched to the third state or the fourth state, the telescopic cylinder 250 gradually extends but is still in a compressed state, in the process, the telescopic cylinder 250 exerts an acting force on the seat 220 to push the seat 220 to rotate towards the position of the third state or the fourth state until the seat abuts against the backrest 210 or the second connecting section 311. Therefore, the folding and unfolding of the chair seat 220 have a suction feeling, and the operation difficulty is reduced.

Meanwhile, because the telescopic cylinder 250 is in a compressed state when in the third state, the fourth state and the fifth state, when the seat 220 is opened or retracted, the telescopic cylinder 250 has a thrust force on the seat 200, so that the seat 220 is prevented from being separated from the current state under the action of non-external force, and the seat 200 is more stable when being retracted or opened.

Further, referring to fig. 5 to 8, two end portions of the adjusting rod 310 are respectively provided with a connecting section 311, and the connecting section 311 is provided with a plurality of adjusting holes 312 along a length direction thereof; each adjusting tube 320 is slidably connected with one connecting section 311, and at least one through hole 322 is formed in the side wall of each adjusting tube 320;

the adjusting device further comprises at least two adjusting screws 330, each adjusting screw 330 is respectively disposed on one adjusting tube 320, and the adjusting screws 330 simultaneously penetrate through the through holes 322 and the adjusting holes 312 to limit the sliding of the adjusting tubes 320 relative to the adjusting rods 310.

Specifically, when not adjusted, the adjusting screw 330 is simultaneously inserted into the through hole 322 and the adjusting hole 312, locking the relative sliding between the adjusting tube 320 and the adjusting rod 310, thereby preventing the relative displacement between the two handles when the handles 100 are operated. When the distance between the two handles needs to be adjusted, the adjusting screw 330 is only required to be pulled out, the adjusting screw 330 is made to exit from the adjusting hole 312, the sliding between the adjusting pipe 320 and the adjusting rod 310 can be unlocked, the adjusting pipe 320 can be slid to a proper position, and then the adjusting screw 330 is extended into the adjusting hole 312 at a corresponding position to be locked.

Simultaneously, two handles are the independent control, and the regulation of one of them handle can not influence the position of another handle for asymmetric position can be adjusted to two handles, and then satisfies more use operating modes.

Wherein, through-hole 322 is the hole that runs through the interior outer wall of adjusting pipe 320, and adjusting hole 312 can set up to the through-hole, also can set up to the blind hole, and it is as long as it can supply adjusting screw 330 to stretch into in order to realize the locking.

Further, a sleeve 321 is fixedly connected to an outer wall of the adjusting tube 320, and the sleeve 321 is communicated with the through hole 322;

the adjusting screw 330 is disposed through the sleeve 321, and the adjusting screw 330 slides relative to the sleeve 321 to extend into or withdraw from the through hole 322 and the adjusting hole 312.

The sleeve 321 is arranged to restrain and limit the adjusting screw 330, so that the adjusting pipe 320 is prevented from sliding relative to the adjusting rod 310 due to looseness of the adjusting screw 330, and the handle is prevented from shaking left and right.

Further, the inner wall of the sleeve 321 is provided with a first limiting ring 321a and a second limiting ring 321b in an inward protruding manner;

an abutting ring 331 is convexly arranged on the outer wall of the adjusting screw 330, a spring 340 is sleeved on the adjusting screw 330, one end of the spring 340 abuts against the abutting ring 331, and the other end abuts against the first limiting ring 321 a;

the adjusting screw 330 has a first position and a second position, when in the first position, the abutting ring 331 abuts against the second limiting ring 321b, and the adjusting screw 330 simultaneously penetrates through the sleeve 321, the through hole 322 and the adjusting hole 312; in the second position, the abutting ring 331 is separated from the second limiting ring 321b, and the adjusting screw 330 exits the adjusting hole 312 or exits the adjusting hole 312 and the through hole 322 simultaneously.

Specifically, in the locked state, the spring 340 is compressed, and the abutment ring 331 abuts against the second stopper ring 321b, so that the adjusting screw 330 is prevented from being withdrawn from the adjusting hole 312 without an external force, and the stability of locking is enhanced.

When adjustment is needed, the adjusting screw 330 is pulled out, the spring 340 is continuously compressed, the part of the adjusting screw 330 extending into the adjusting hole 312 exits the adjusting hole 312, the adjusting pipe 320 can slide relative to the adjusting rod 310, the handle is further adjusted to a proper position, the adjusting screw 330 is loosened, and the adjusting screw 330 extends into other corresponding adjusting holes 312 under the elastic force of the spring 340 to be locked, so that the step of manually inserting the adjusting screw 330 into the adjusting hole 312 during adjustment is simplified.

It should be noted that all directional indicators (such as up, down, left, right, front, and back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicators are changed accordingly.

Furthermore, descriptions of the present invention as related to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of technical features indicated is indicative. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Claims (10)

1. An operation panel of a forklift, comprising:

a chair comprising a seat and a back rotatably connected;

two operating handles, set up respectively the both sides of seat, every operating handle includes: a swivel arm having a first hinge and a second hinge; a manipulation seat having a third hinge and a fourth hinge; one end of the first connecting rod is hinged with the first hinge part, and the other end of the first connecting rod is hinged with the third hinge part; a second connecting rod, one end of which is hinged with the second hinge part, the other end of which is hinged with the fourth hinge part, and the distance from the first hinge part to the second hinge part is equal to the distance from the third hinge part to the fourth hinge part;

the adjusting device comprises an adjusting rod and two adjusting pipes which are slidably connected with the adjusting rod, the adjusting rod is arranged below the seat and rotatably connected with the seat, and each adjusting pipe is fixedly connected with one end of the rotating arm far away from the control seat.

2. The console of claim 1, wherein the first hinge, the second hinge, the third hinge, and the fourth hinge are each at an apex of a parallelogram.

3. The console of claim 1, wherein the operating handle has a first state and a second state;

when the first hinge part is in the first state, a connecting line of the first hinge part and the third hinge part is parallel to the horizontal direction, and a connecting line of the second hinge part and the fourth hinge part is parallel to the horizontal direction;

when the first hinge portion is in the first state, the connecting line of the first hinge portion is parallel to the vertical direction, and the connecting line of the second hinge portion is parallel to the vertical direction.

4. The console of a forklift truck of claim 1, further comprising:

the fixing frame is provided with a first connecting part and a second connecting part;

the adjusting frame is provided with a third connecting part and a fourth connecting part, and the adjusting rod is rotatably connected with the adjusting frame;

one end of the third connecting rod is hinged with the first connecting part, and the other end of the third connecting rod is hinged with the third connecting part;

and one end of the fourth connecting rod is hinged with the second connecting part, and the other end of the fourth connecting rod is hinged with the fourth connecting part.

5. The console of claim 1, wherein the seat has a first face and a second face opposite to each other, the second face being provided with an auxiliary backrest; the chair is provided with a third state and a fourth state, and the chair seat is rotated to be switched between the third state and the fourth state; wherein, in the third state, the first surface of the chair seat faces upwards and the second surface faces downwards; in a fourth state, the first surface is abutted against the chair back, and the auxiliary backrest is positioned on one side, far away from the chair back, of the chair seat;

the chair also comprises a lifting assembly which comprises a lifting oil cylinder, wherein the lifting oil cylinder stretches and retracts to adjust the height of the chair.

6. The operating platform of the forklift as recited in claim 5, further comprising a lifting frame, wherein the lifting frame is detachably connected with the chair back, and the lifting cylinder is connected with the lifting frame;

the connecting plate is provided with a first fixing part, a rotating part and a second fixing part, the first fixing part is fixed with the chair seat, and the rotating part is hinged with the chair back;

the extension rod is detachably connected with the second fixing part;

the telescopic cylinder, telescopic cylinder's one end with the crane is articulated, the other end with the extension rod is articulated.

7. The console of claim 6, further comprising a fifth state between the third state and the fourth state, wherein in the fifth state, the second fixing portion and the telescopic cylinder are aligned on the same line, and when the console is switched from the third state or the fourth state to the fifth state, the telescopic cylinder is compressed.

8. The operating platform of the forklift as recited in claim 1, wherein the two ends of the adjusting rod are respectively provided with a connecting section, and the connecting section is provided with a plurality of adjusting holes along the length direction; each adjusting pipe is slidably connected with one connecting section, and the side wall of each adjusting pipe is provided with at least one through hole;

the adjusting device is characterized by further comprising at least two adjusting screws, wherein each adjusting screw is arranged on one adjusting pipe, and the adjusting screws penetrate through the through holes and the adjusting holes simultaneously so as to limit the adjusting pipes to slide relative to the adjusting rods.

9. The operating console of claim 8, wherein a sleeve is fixedly connected to an outer wall of the adjusting tube, and the sleeve is communicated with the through hole;

the adjusting screw rod penetrates through the sleeve, and the adjusting screw rod slides relative to the sleeve to stretch into or withdraw from the through hole and the adjusting hole.

10. The operating console of a forklift as set forth in claim 9, wherein the inner wall of said sleeve is provided with a first stop collar and a second stop collar projecting inwardly;

the outer wall of the adjusting screw rod is provided with a butting ring in an outward protruding mode, a spring is sleeved on the adjusting screw rod, one end of the spring abuts against the butting ring, and the other end of the spring abuts against the first limiting ring;

the adjusting screw rod is provided with a first position and a second position, the abutting ring abuts against the second limiting ring when the adjusting screw rod is at the first position, and the adjusting screw rod penetrates through the sleeve, the through hole and the adjusting hole; and when the support ring is at the second position, the abutting ring is separated from the second limiting ring, and the adjusting screw rod exits from the adjusting hole or exits from the adjusting hole and the through hole simultaneously.

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