An operating console of a forklift

Abstract

The present invention discloses an operating console of a forklift, which is characterized in that it includes: a seat, an adjusting device, and two operating handles respectively arranged on both sides of the seat. The operating handle includes: a rotating arm having a first hinge portion and a second hinge portion; a control seat having a third hinge portion and a fourth hinge portion; a first connecting rod, one end of which is hinged to the first hinge portion and the other end is hinged to the third hinge portion; a second connecting rod, one end of which is hinged to the second hinge portion and the other end is hinged to the fourth hinge portion, and the distance from the first hinge portion to the second hinge portion is equal to the distance from the third hinge portion to the fourth hinge portion. In the present invention, the angle of the control seat never changes during the height adjustment process, so that the buttons, knobs, etc. on the control seat always face the direction convenient for the operator to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of forklifts, and particularly to an operating platform of a forklift. Background Art

[0002] The operating platform of a forklift generally consists of components such as operating handles and seats, which are used to enable an operator to control the operating handles when sitting or standing on the seat, so as to control various actions of the forklift.

[0003] However, the existing operating platforms of forklifts have the following defects: First, the seat occupies space, resulting in interference with the operator's legs when standing; Second, when the height of the seat is adjusted, the operating handle also needs to be adjusted in height to maintain a relatively fixed position relative to the seat. However, the operating handle generally adjusts its height by rotation, which will cause the orientation of the operating handle to change during height adjustment and cannot be fixed at the most suitable angle for the operator to control; Third, the two operating handles are respectively on both sides of the seat, and the distance between the two operating handles cannot be adjusted, making it impossible for some operators to operate the two handles simultaneously in a more comfortable posture and also affecting safety. Summary of the Invention

[0004] In view of the above deficiencies of the prior art, the technical problem to be solved by the present invention is to provide an operating platform of a forklift to solve the problems such as inconvenient adjustment of the existing operating platform of a forklift.

[0005] The technical solution adopted by the present invention to solve its technical problems is an operating platform of a forklift, including:

[0006] A seat, including a seat cushion and a backrest that are rotatably connected;

[0007] Two operating handles, respectively arranged on both sides of the seat. Each operating handle includes: a rotating arm having a first hinge portion and a second hinge portion; a control seat having a third hinge portion and a fourth hinge portion; a first connecting rod, one end of which is hinged to the first hinge portion and the other end is hinged to the third hinge portion; a second connecting rod, one end of which is hinged to the second hinge portion and the other end is hinged to the fourth hinge portion, and the distance from the first hinge portion to the second hinge portion is equal to the distance from the third hinge portion to the fourth hinge portion;

[0008] An adjusting device, including an adjusting rod and two adjusting tubes slidably connected to the adjusting rod. The adjusting rod is arranged under the seat cushion and is rotatably connected to the seat, and each adjusting tube is fixedly connected to one end of the rotating arm away from the control seat.

[0009] Further, the first hinge portion, the second hinge portion, the third hinge portion, and the fourth hinge portion are respectively at the vertices of a parallelogram.

[0010] Furthermore, the operating handle has a first state and a second state;

[0011] In the first state, the line connecting the first hinge portion and the third hinge portion is parallel to the horizontal direction, and the line connecting the second hinge portion and the fourth hinge portion is parallel to the horizontal direction;

[0012] In the second state, the line connecting the first hinge portion and the third hinge portion is parallel to the vertical direction, and the line connecting the second hinge portion and the fourth hinge portion is parallel to the vertical direction.

[0013] Furthermore, it further includes:

[0014] A fixing frame, on which a first connecting portion and a second connecting portion are provided;

[0015] An adjusting frame, on which a third connecting portion and a fourth connecting portion are provided, and the adjusting rod is rotatably connected to the adjusting frame;

[0016] A third connecting rod, one end of which is hinged to the first connecting portion and the other end is hinged to the third connecting portion;

[0017] A fourth connecting rod, one end of which is hinged to the second connecting portion and the other end is hinged to the fourth connecting portion.

[0018] Furthermore, the seat has a first surface and a second surface on opposite sides, and an auxiliary backrest is installed on the second surface; the seat has a third state and a fourth state, and the seat is rotated to be arbitrarily switched between the third state and the fourth state; wherein, in the third state, the first surface of the seat faces upward and the second surface faces downward; in the fourth state, the first surface abuts against the backrest, and the auxiliary backrest is on the side of the seat away from the backrest;

[0019] It further includes a lifting assembly, including a lifting oil cylinder, and the lifting oil cylinder expands and contracts to adjust the height of the seat.

[0020] Furthermore, it further includes a lifting frame, which is detachably connected to the backrest, and the lifting oil cylinder is connected to the lifting frame;

[0021] A connecting plate, which has a first fixing portion, a rotating portion and a second fixing portion, the first fixing portion is fixed to the seat, and the rotating portion is hinged to the backrest;

[0022] An extension rod, which is detachably connected to the second fixing portion;

[0023] A telescopic cylinder, one end of which is hinged to the lifting frame and the other end is hinged to the extension rod.

[0024] Further, there is also a fifth state between the third state and the fourth state. In the fifth state, the second fixing part and the telescopic cylinder are on the same straight line, and when switching from the third state or the fourth state to the fifth state, the telescopic cylinder is compressed.

[0025] Further, both ends of the adjusting rod are respectively provided with a connecting section, and a plurality of adjusting holes are formed in the connecting section along its length direction; each adjusting tube is slidably connected to one of the connecting sections respectively, and at least one through hole is formed in the side wall of the adjusting tube;

[0026] It further includes at least two adjusting screws, each adjusting screw is respectively arranged in an adjusting tube, and the adjusting screw simultaneously passes through the through hole and the adjusting hole to limit the sliding of the adjusting tube relative to the adjusting rod.

[0027] Further, a sleeve is fixedly connected to the outer wall of the adjusting tube, and the sleeve communicates with the through hole;

[0028] The adjusting screw is arranged in the sleeve, and the adjusting screw slides relative to the sleeve to extend into or withdraw from the through hole and the adjusting hole.

[0029] Further, a first limiting ring and a second limiting ring are convexly provided on the inner wall of the sleeve towards the inside;

[0030] An abutting ring is convexly provided on the outer wall of the adjusting screw, and a spring is sleeved on the adjusting screw, and one end of the spring abuts against the abutting ring, and the other end abuts against the first limiting ring;

[0031] The adjusting screw has a first position and a second position. In the first position, the abutting ring abuts against the second limiting ring, and the adjusting screw simultaneously passes through the sleeve, the through hole and the adjusting hole; in the second position, the abutting ring is separated from the second limiting ring, and the adjusting screw withdraws from the adjusting hole or simultaneously withdraws from the adjusting hole and the through hole.

[0032] Compared with the prior art, the present invention has at least the following beneficial effects:

[0033] (1) There is a first connecting rod and a second connecting rod, and the two connecting rods are simultaneously hinged to both ends of the rotating arm and the control seat. When it is necessary to adjust the height of the control seat, the first connecting rod rotates around the first hinge portion, and the third hinge portion can be lifted; while the first connecting rod rotates, it will drive the second connecting rod to rotate around the second hinge portion, so that when the height of the third hinge portion changes, the height of the fourth hinge portion also changes accordingly, and the relative positions of the third hinge portion and the fourth hinge portion remain fixed, thereby ensuring that the angle of the control seat never changes during the lifting process, and finally making the buttons, knobs, etc. on the control seat always face the direction convenient for the operator to operate (roughly upward).

[0034] (2) An adjusting rod is provided, and adjusting tubes are slidably connected to the connecting sections at both ends of the adjusting rod, so that two handles are respectively connected to the two adjusting tubes. By sliding the adjusting tubes relative to the adjusting rod, the distance between the two handles can be adjusted, and then the two handles can be simultaneously in a suitable position for the operator's arms, so as to facilitate the operator to operate the two handles with both hands.

[0035] (3) An auxiliary backrest is added under the seat of this application. In the third state, the auxiliary backrest is hidden under the seat and does not occupy the leg space; by the telescopic movement of the lifting oil cylinder, the height of the seat can be adjusted to facilitate the operator to observe the goods at a suitable position; in the fourth state, the first surface of the seat contacts the backrest, the seat is retracted, and the auxiliary backrest faces the operator to prevent it from encroaching on the operator's standing space; at the same time, the auxiliary backrest can also support the operator's back, so that the operator is more stable when standing, improve the operator's observation height, and enhance safety. Description of the Drawings

[0036] Figure 1 It is a schematic structural diagram of the operating platform in the embodiment;

[0037] Figure 2 It is a schematic structural diagram of the operating handle in the embodiment;

[0038] Figure 3 It is a schematic structural diagram of the fixing frame, adjusting frame and operating handle in the embodiment;

[0039] Figure 4 It is a schematic structural diagram of the seat in the embodiment;

[0040] Figure 5 It is a schematic structural diagram of the operating handle and the adjusting device in the embodiment;

[0041] Figure 6 It is an exploded view of the adjusting device in the embodiment;

[0042] Figure 7 It is a schematic structural diagram of the adjusting tube in the embodiment;

[0043] Figure 8 Cross-sectional view of the adjusting device in the embodiment;

[0044] In the figure:

[0045] 100, operating handle; 110, control seat; 111, third hinge part; 112, fourth hinge part; 120, rotating arm; 121, first hinge part; 122, second hinge part; 130, first connecting rod; 140, second connecting rod; 150, adjusting frame; 160, fixing frame; 170, third connecting rod; 180, fourth connecting rod;

[0046] 200, seat; 210, backrest; 220, seat cushion; 230, auxiliary backrest; 240, connecting plate; 241, extension rod; 250, telescopic cylinder; 260, lifting frame; 270, lifting oil cylinder;

[0047] 300, adjusting device; 310, adjusting rod; 311, connecting section; 312, adjusting hole; 320, adjusting tube; 321, sleeve; 321a, first limiting ring; 321b, second limiting ring;

[0048] 322, through hole; 330, adjusting screw; 331, abutting ring; 340, spring. Detailed implementation manners

[0049] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0050] Please refer to Figures 1-8 , the present invention discloses an operating platform of a forklift, including:

[0051] A seat 200, including a seat cushion 220 and a backrest 210 that are rotatably connected;

[0052] Two operating handles 100, respectively arranged on both sides of the seat 200, and each operating handle 100 includes: a rotating arm 120, which has a first hinge part 121 and a second hinge part 122; a control seat 110, which has a third hinge part 111 and a fourth hinge part 112; a first connecting rod 130, one end of which is hinged to the first hinge part 121 and the other end is hinged to the third hinge part 111; a second connecting rod 140, one end of which is hinged to the second hinge part 122 and the other end is hinged to the fourth hinge part 112, and the distance from the first hinge part 121 to the second hinge part 122 is equal to the distance from the third hinge part 111 to the fourth hinge part 112;

[0053] Adjusting device 300, including an adjusting rod 310 and two adjusting tubes 320 slidably connected to the adjusting rod 310. The adjusting rod 310 is disposed below the seat 220 and rotatably connected to the seat 200. Each adjusting tube 320 is fixedly connected to one end of the rotating arm 120 away from the control seat 110.

[0054] Specifically, please refer to Figure 2 , this application is provided with a first connecting rod 130 and a second connecting rod 140. The two connecting rods are simultaneously hinged to both ends of the rotating arm 120 and the control seat 110. When it is necessary to adjust the height of the control seat 110, the first connecting rod 130 rotates about the first hinge portion 121 as an axis, and the third hinge portion 111 can be lifted. While the first connecting rod 130 rotates, it will drive the second connecting rod 140 to rotate about the second hinge portion 122 as an axis. When the height of the third hinge portion 111 changes, the height of the fourth hinge portion 112 also changes accordingly. Since the distance from the first hinge portion 121 to the second hinge portion 122 is equal to the distance from the third hinge portion 111 to the fourth hinge portion 112, the angle of rotation of the first connecting rod 130 / second connecting rod 140 relative to the rotating arm 120 is equal to the angle of rotation of the control seat 110 relative to the first connecting rod 130 / second connecting rod 140, and the direction of rotation of the first connecting rod 130 / second connecting rod 140 relative to the rotating arm 120 is opposite to the direction of rotation of the control seat 110 relative to the first connecting rod 130 / second connecting rod 140, so that the angle of the control seat 110 relative to the rotating arm 120 remains constant.

[0055] Please refer to Figures 5-8 , this application is also provided with an adjusting rod 310, and adjusting tubes 320 are slidably connected to the connecting sections 311 at both ends of the adjusting rod 310, so that the two handles are respectively connected to the two adjusting tubes 320. By sliding the adjusting tubes 320 relative to the adjusting rod 310, the distance between the two handles can be adjusted, and further the two handles can be simultaneously in a suitable position for the operator's arms, so as to facilitate the operator to operate the two handles with both hands at the same time.

[0056] Furthermore, the first hinge portion 121, the second hinge portion 122, the third hinge portion 111 and the fourth hinge portion 112 are respectively at the vertices of a parallelogram.

[0057] Specifically, the first hinge portion 121, the second hinge portion 122, the third hinge portion 111, and the fourth hinge portion 112 are respectively located at the vertices of a parallelogram, such that the lines connecting the four hinge portions form a parallelogram. It can be seen that the rotating arm 120, the control seat 110, the first link 130, and the second link 140 can form a parallelogram linkage structure. The first link 130 and the second link 140 always remain parallel when rotating, ensuring that the orientation (angle) of the control seat 110 does not change during the height adjustment process, so that the operator can control the buttons and knobs on the control seat 110 even when standing.

[0058] Further, please refer to Figures 2-3 , the operating handle 100 has a first state and a second state;

[0059] In the first state, the line connecting the first hinge portion 121 and the third hinge portion 111 is parallel to the horizontal direction, and the line connecting the second hinge portion 122 and the fourth hinge portion 112 is parallel to the horizontal direction;

[0060] In the second state, the line connecting the first hinge portion 121 and the third hinge portion 111 is parallel to the vertical direction, and the line connecting the second hinge portion 122 and the fourth hinge portion 112 is parallel to the vertical direction.

[0061] In the first state, the line connecting the first hinge portion 121 and the third hinge portion 111 is horizontal, and the line connecting the second hinge portion 122 and the fourth hinge portion 112 is horizontal. At this time, the height of the control seat 110 is relatively low, and the first link 130 and the second link 140 (which may also include a housing covering the first link 130 and the second link 140) are used as armrests, and the operator's arm can lean on the armrests to control the control seat 110.

[0062] In the second state, the line connecting the first hinge portion 121 and the third hinge portion 111 is vertical, and the line connecting the second hinge portion 122 and the fourth hinge portion 112 is vertical. At this time, the height of the control seat 110 is lifted to the highest, facilitating the operator to stand and operate.

[0063] Further, please refer to Figure 3 , further comprising:

[0064] A fixing frame 160, provided with a first connection portion and a second connection portion on the fixing frame 160;

[0065] An adjusting frame 150, provided with a third connection portion and a fourth connection portion on the adjusting frame 150, and the adjusting rod 310 is rotatably connected to the adjusting frame 150;

[0066] A third link 170, one end of the third link 170 is hinged to the first connection portion, and the other end is hinged to the third connection portion;

[0067] A fourth link 180, one end of the fourth link 180 is hinged to the second connecting portion, and the other end is hinged to the fourth connecting portion.

[0068] Specifically, by adjusting the height of the adjusting frame 150 relative to the fixed frame 160, the height of the entire operating handle 100 can be adjusted. Both ends of the third connecting rod and both ends of the fourth link 180 are respectively at the four endpoints of a parallelogram. The third link 170 and the fourth link 180 rotate simultaneously to adjust the height of the adjusting frame 150, and at the same time keep the orientation of the control seat 110 on the adjusting frame 150 unchanged all the time.

[0069] Further, please refer to Figure 4 , the seat 220 has a first surface and a second surface that are opposite to each other, and the auxiliary backrest 230 is installed on the second surface; the seat 200 has a third state and a fourth state, and the seat 220 is rotated to switch arbitrarily between the third state and the fourth state; wherein, 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 abuts against the backrest 210, and the auxiliary backrest 230 is on the side of the seat 220 away from the backrest 210;

[0070] It further includes a lifting assembly, including a lifting oil cylinder 270, and the lifting oil cylinder 270 expands and contracts to adjust the height of the seat 200.

[0071] In the present application, an auxiliary backrest 230 is added below the seat 220. In the third state, the auxiliary backrest 230 is hidden below the seat 220 and does not occupy the leg space; by the expansion and contraction of the lifting oil cylinder 270, the height of the seat 200 can be adjusted to facilitate the operator to observe the goods at a suitable position; in the fourth state, the first surface of the seat 220 contacts the backrest 210, the seat 220 is retracted, the auxiliary backrest 230 faces the operator, preventing it from encroaching on the standing space of the operator; at the same time, the auxiliary backrest 230 can also support the back of the operator, so that the operator is more stable when standing, increasing the observation height of the operator and enhancing safety.

[0072] Further, please refer to Figure 4 , it further includes a lifting frame 260, the lifting frame 260 is detachably connected to the backrest 210, and the lifting oil cylinder 270 is connected to the lifting frame 260;

[0073] A connecting plate 240, the connecting plate 240 has a first fixing portion, a rotating portion and a second fixing portion, the first fixing portion is fixed to the seat 220, and the rotating portion is hinged to the backrest 210;

[0074] an extension rod 241, which is detachably connected to the second fixing portion;

[0075] A telescopic cylinder 250 , one end of which is hinged to the lifting frame 260 , and the other end of which is hinged to the extension rod 241 .

[0076] Furthermore, there is a fifth state between the third state and the fourth state. In the fifth state, the second fixing portion and the telescopic cylinder 250 are on the same straight line, and when switching from the third state or the fourth state to the fifth state, the telescopic cylinder 250 is compressed.

[0077] Specifically, in the fifth state, the second fixing portion and the telescopic cylinder 250 are in the same straight line, so that the compression of the telescopic cylinder 250 by the extension rod 241 reaches the maximum, the length of the telescopic cylinder 250 is the shortest, and the force is also the maximum at this time.

[0078] When switching from the fifth state to the third state or the fourth state, the telescopic cylinder 250 gradually extends, but is always in a compressed state. During this process, the telescopic cylinder 250 applies a force to the seat 220, pushing the seat 220 to rotate toward the position of the third state or the fourth state until it abuts against the chair back 210 or the second connecting section 311. In this way, the folding and opening of the seat 220 both have a suction feeling, reducing the difficulty of operation.

[0079] At the same time, since the telescopic cylinder 250 is in a compressed state in the third state, the fourth state and the fifth state, the telescopic cylinder 250 has a thrust on the seat 200 when the seat 220 is opened or folded, preventing the seat 220 from leaving the current state without the action of external force, making the seat 200 more stable when folded or opened.

[0080] For further information, please refer to Figures 5-8 The two ends 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 its length direction; each of the adjusting tubes 320 is slidably connected to one of the connecting sections 311, and at least one through hole 322 is provided on the side wall of the adjusting tube 320;

[0081] At least two adjusting screws 330 are also included. Each adjusting screw 330 is respectively disposed on an adjusting tube 320 , and the adjusting screw 330 passes through the through hole 322 and the adjusting hole 312 at the same time to limit the sliding of the adjusting tube 320 relative to the adjusting rod 310 .

[0082] Specifically, when not adjusted, the adjusting screw 330 passes through the through hole 322 and the adjusting hole 312 at the same time, locking the relative sliding between the adjusting tube 320 and the adjusting rod 310, thereby preventing the relative displacement between the two handles when operating the handle 100. When it is necessary to adjust the distance between the two handles, only need to pull out the adjusting screw 330 outward so that the adjusting screw 330 exits the adjusting hole 312, then the sliding between the adjusting tube 320 and the adjusting rod 310 can be unlocked. At this time, the adjusting tube 320 can be slid to a suitable position, and then the adjusting screw 330 is inserted into the adjusting hole 312 at the corresponding position to lock it.

[0083] At the same time, the two handles are adjusted separately, and the adjustment of one handle will not affect the position of the other handle, so that the two handles can be adjusted to asymmetric positions, thereby meeting more usage conditions.

[0084] Among them, the through hole 322 is a hole penetrating the inner and outer walls of the adjusting tube 320. The adjusting hole 312 can be set as a through hole or a blind hole, as long as it can allow the adjusting screw 330 to extend into it to achieve locking.

[0085] Further, a sleeve 321 is fixedly connected to the outer wall of the adjusting tube 320, and the sleeve 321 communicates with the through hole 322;

[0086] The adjusting screw 330 passes through the sleeve 321, and the adjusting screw 330 slides relative to the sleeve 321 to extend into or exit the through hole 322 and the adjusting hole 312.

[0087] The sleeve 321 is provided to restrict and position the adjusting screw 330, preventing the adjusting screw 330 from loosening and causing the adjusting tube 320 to slide relative to the adjusting rod 310, thereby causing the handle to shake left and right.

[0088] Further, a first limiting ring 321a and a second limiting ring 321b are convexly provided inward on the inner wall of the sleeve 321;

[0089] An abutting ring 331 is convexly provided on the outer wall of the adjusting screw 330, and 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 321a;

[0090] The adjusting screw 330 has a first position and a second position. In the first position, the abutting ring 331 abuts against the second limiting ring 321b, and the adjusting screw 330 passes through the sleeve 321, the through hole 322 and the adjusting hole 312 at the same time. In the second position, the abutting ring 331 is separated from the second limiting ring 321b, and the adjusting screw 330 withdraws from the adjusting hole 312 or withdraws from the adjusting hole 312 and the through hole 322 at the same time.

[0091] Specifically, in the locked state, the spring 340 is in a compressed state, so that the abutting ring 331 abuts against the second limiting ring 321b, thereby preventing the adjusting screw 330 from withdrawing from the adjusting hole 312 without external force and enhancing the stability of locking.

[0092] When adjustment is required, pull out the adjusting screw 330 outward, continue to compress the spring 340 so that the part of the adjusting screw 330 extending into the adjusting hole 312 withdraws from the adjusting hole 312, then the adjusting tube 320 can slide relative to the adjusting rod 310, and then adjust the handle to a suitable position. Loosen the adjusting screw 330 and let it extend into other corresponding adjusting holes 312 under the elastic force of the spring 340 for locking, which simplifies the step of manually inserting the adjusting screw 330 during adjustment.

[0093] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0094] In addition, in the present invention, descriptions such as "first", "second", "one" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0095] In the present invention, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0096] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. An operating console of a forklift, characterized in that, Comprising: A seat, including a seat cushion and a backrest that are rotatably connected; Two operating handles, respectively arranged on both sides of the seat. Each operating handle includes: a rotating arm having a first hinge portion and a second hinge portion; a control seat having a third hinge portion and a fourth hinge portion; a first connecting rod, one end of which is hinged to the first hinge portion and the other end is hinged to the third hinge portion; a second connecting rod, one end of which is hinged to the second hinge portion and the other end is hinged to the fourth hinge portion, and the distance from the first hinge portion to the second hinge portion is equal to the distance from the third hinge portion to the fourth hinge portion; An adjusting device, including an adjusting rod and two adjusting tubes slidably connected to the adjusting rod. The adjusting rod is arranged under the seat cushion and is rotatably connected to the seat. Each adjusting tube is fixedly connected to one end of the rotating arm away from the control seat; The operating handle has a first state and a second state; In the first state, the connection line between the first hinge portion and the third hinge portion is parallel to the horizontal direction, and the connection line between the second hinge portion and the fourth hinge portion is parallel to the horizontal direction; In the second state, the connection line between the first hinge portion and the third hinge portion is parallel to the vertical direction, and the connection line between the second hinge portion and the fourth hinge portion is parallel to the vertical direction; The seat cushion has a first surface and a second surface that are opposite to each other. The second surface is provided with an auxiliary backrest. The seat has a third state and a fourth state, and the seat cushion is rotated to arbitrarily switch between the third state and the fourth state. Wherein, in the third state, the first surface of the seat cushion faces upward and the second surface faces downward; in the fourth state, the first surface abuts against the backrest, and the auxiliary backrest is on the side of the seat cushion away from the backrest; It further includes a lifting assembly, including a lifting oil cylinder, and the lifting oil cylinder expands and contracts to adjust the height of the seat; It further includes a lifting frame, the lifting frame is detachably connected to the backrest, and the lifting oil cylinder is connected to the lifting frame; A connecting plate, the connecting plate has a first fixing portion, a rotating portion and a second fixing portion. The first fixing portion is fixed to the seat cushion, and the rotating portion is hinged to the backrest; An extension rod, which is detachably connected to the second fixing portion; A telescopic cylinder, one end of the telescopic cylinder is hinged to the lifting frame, and the other end is hinged to the extension rod; There is also a fifth state between the third state and the fourth state. In the fifth state, the second fixing portion and the telescopic cylinder are on the same straight line, and when switching from the third state or the fourth state to the fifth state, the telescopic cylinder is compressed.

2. The operating console of a forklift according to claim 1, characterized in that, The first hinge portion, the second hinge portion, the third hinge portion and the fourth hinge portion are respectively at the vertices of a parallelogram.

3. The operating console of a forklift according to claim 1, characterized in that, It further includes: A fixing frame, the fixing frame is provided with a first connecting portion and a second connecting portion; An adjusting frame, the adjusting frame is provided with a third connecting portion and a fourth connecting portion, and the adjusting rod is rotatably connected to the adjusting frame; A third connecting rod, one end of the third connecting rod is hinged to the first connecting portion, and the other end is hinged to the third connecting portion; The fourth connecting rod, one end of the fourth connecting rod is hinged to the second connecting portion, and the other end is hinged to the fourth connecting portion.

4. The operating console of a forklift according to claim 1, characterized in that, Both ends of the adjusting rod are respectively provided with a connecting section, and a plurality of adjusting holes are formed in the connecting section along its length direction; each adjusting tube is slidably connected to one of the connecting sections, and at least one through hole is formed in the side wall of the adjusting tube; It further includes at least two adjusting screws, each adjusting screw is respectively arranged in an adjusting tube, and the adjusting screw simultaneously passes through the through hole and the adjusting hole to limit the sliding of the adjusting tube relative to the adjusting rod.

5. The operating console of a forklift according to claim 4, characterized in that, A sleeve is fixedly connected to the outer wall of the adjusting tube, and the sleeve communicates with the through hole; The adjusting screw is arranged in the sleeve, and the adjusting screw slides relative to the sleeve to extend into or withdraw from the through hole and the adjusting hole.

6. The operating console of a forklift according to claim 5, characterized in that, The inner wall of the sleeve is inwardly convex with a first limiting ring and a second limiting ring; An abutting ring is outwardly convex on the outer wall of the adjusting screw, and a spring is sleeved on the adjusting screw, and one end of the spring abuts against the abutting ring, and the other end abuts against the first limiting ring; The adjusting screw has a first position and a second position. In the first position, the abutting ring abuts against the second limiting ring, and the adjusting screw simultaneously passes through the sleeve, the through hole and the adjusting hole; in the second position, the abutting ring is separated from the second limiting ring, and the adjusting screw withdraws from the adjusting hole or simultaneously withdraws from the adjusting hole and the through hole.

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