Forklift

Abstract

The present invention relates to the technical field of handling equipment. Disclosed is a forklift. The disclosed forklift comprises: a forklift body, floating connection assemblies, connecting rod mechanisms and bearing wheels; the floating connection assemblies are arranged on the forklift body; one end of each connecting rod mechanism is hinged to a floating connection assembly, and the other end of each connecting rod mechanism is hinged to a bearing wheel so as to support the bearing wheel. The floating connection assemblies have a first state and a second state; in the first state, the floating connection assemblies can float with respect to the forklift body in the vertical direction, such that the connecting rod mechanisms and the bearing wheels float with respect to the forklift body in the vertical direction; in the second state, the floating connection assemblies and the forklift body are fixed with respect to each other so as to limit the floating of the connecting rod mechanisms and the bearing wheels with respect to the forklift body in the vertical direction.

Description

A forklift Technical Field

[0001] The present invention relates to the technical field of handling equipment, in particular to a forklift. Background Art

[0002] Forklifts, as small- to medium-sized handling equipment, are widely used for loading and unloading goods at shipping and receiving stations, as well as for transporting goods between various processes within a workshop. A forklift typically has two forks, with load wheels mounted at the front of the forks. These wheels are supported by a linkage mechanism. During operation, the forklift's linkage mechanism supports the load wheels, which protrude from the lower surface of the forks and contact the ground.

[0003] When a forklift is moving or transporting goods, the load-bearing wheels on the fork arm will inevitably come into contact with obstacles or goods. The obstacles or goods will hinder the load-bearing wheels and even cause damage to the load-bearing wheels or the goods.

[0004] Summary of the Invention

[0005] The present invention discloses a forklift to solve the problem in the related art that when the forklift is moving or when the forklift is used to transport goods, obstacles or goods may block the load-bearing wheels, and even cause damage to the load-bearing wheels or goods.

[0006] In order to solve the above-mentioned technical problems, the present invention is achieved as follows:

[0007] The technical solution of the present invention discloses a forklift, which includes: a forklift body, a floating connection assembly, a connecting rod mechanism and load-bearing wheels;

[0008] The floating connection assembly is provided on the forklift body, one end of the connecting rod mechanism is hinged to the floating connection assembly, and the other end of the connecting rod mechanism is hinged to the load-bearing wheel to support the load-bearing wheel;

[0009] The floating connection assembly has a first state and a second state;

[0010] When in the first state, the floating connection assembly can float relative to the forklift body in the vertical direction, so that the connecting rod mechanism and the load-bearing wheel float relative to the forklift body in the vertical direction;

[0011] In the second state, the floating connection assembly is fixed relative to the forklift body to limit the floating of the connecting rod mechanism and the load-bearing wheel relative to the forklift body in the vertical direction.

[0012] In one embodiment, the floating connection assembly includes a sliding support seat and a slider;

[0013] The sliding support seat is slidably connected to the forklift body and can slide relative to the forklift body in a vertical direction. Two opposite side walls of the sliding support seat are respectively provided with strip-shaped holes, and the strip-shaped holes extend in the vertical direction;

[0014] One end of the connecting rod mechanism is hinged to the slider, and the slider is provided with a rotating shaft, and both ends of the rotating shaft are respectively passed through the two strip-shaped holes, so that the slider can slide relative to the sliding support seat in a vertical direction;

[0015] The sliding support seat has a first position and a second position relative to the forklift body. When in the first position, there is space in the strip hole for the rotating shaft to slide. When in the second position, the hole wall of the strip hole abuts against the rotating shaft to limit the sliding of the rotating shaft.

[0016] In one embodiment, the floating connection assembly further includes a driving member, which is disposed on the forklift body and connected to the sliding support seat to drive the sliding support seat to switch between the first position and the second position.

[0017] In one embodiment, the output end of the driving member is provided with a hinge shaft, the sliding support seat is provided with an axis hole, and the driving member and the sliding support seat are hinged through the cooperation of the hinge shaft and the axis hole.

[0018] In one embodiment, one of the sliding support seat and the forklift body is provided with a sliding groove, and the other is provided with a sliding rail. The sliding groove and the sliding rail extend in a vertical direction and are slidably matched.

[0019] In one embodiment, the floating connection assembly further includes a shaft sleeve, which is respectively sleeved on both ends of the rotating shaft and rotatably connected to the rotating shaft, and the outer side of the shaft sleeve is slidably engaged with the strip hole.

[0020] In one embodiment, the forklift further includes a fork arm, the fork arm is correspondingly arranged with the connecting rod mechanism, and the load-bearing wheel is used to support the fork arm;

[0021] The connecting rod mechanism is hinged to the fork arm and can be raised and lowered synchronously with the fork arm relative to the forklift body.

[0022] In one embodiment, the linkage mechanism includes a first link, a second link, and a load-bearing wheel bracket;

[0023] The first connecting rod is hinged to the slider and the fork arm respectively, the two ends of the second connecting rod are hinged to the first connecting rod and the load-bearing wheel bracket respectively, and the load-bearing wheel bracket is hinged to the fork arm and the load-bearing wheel respectively.

[0024] In one embodiment, the forklift further comprises auxiliary support wheels, and the auxiliary support wheels are provided at the bottom of the forklift body and / or the fork arm.

[0025] In one embodiment, the forklift includes two or more connecting rod mechanisms, the number of the floating connection assemblies and the load-bearing wheels is equal to the number of the connecting rod mechanisms, and each load-bearing wheel is hinged to the floating connection assembly through the connecting rod mechanism.

[0026] The technical solution adopted by the present invention can achieve the following technical effects:

[0027] The forklift disclosed in the technical solution of the present invention improves the relevant technology. A floating connection assembly is provided on the forklift body, and the load-bearing wheel is hinged to the floating connection assembly through a connecting rod mechanism. When the floating connection assembly is in a first state, it can float in the vertical direction relative to the forklift body, so that the connecting rod mechanism and the load-bearing wheel float in the vertical direction relative to the forklift body, so that the load-bearing wheel can avoid obstacles or goods by floating, avoiding rigid contact between the load-bearing wheel and the obstacle or goods, which may cause damage to the load-bearing wheel or goods; when the floating connection assembly is in a second state, it will be relatively fixed to the forklift body to limit the floating of the connecting rod mechanism and the load-bearing wheel relative to the forklift body in the vertical direction, so that the load-bearing wheel can be stably supported on the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1 is a schematic diagram of the structure of a forklift according to an embodiment of the present invention;

[0029] FIG2 is a second structural schematic diagram of a forklift disclosed in an embodiment of the present invention;

[0030] FIG3 is a third structural schematic diagram of a forklift disclosed in an embodiment of the present invention;

[0031] FIG4 is a fourth structural schematic diagram of a forklift disclosed in an embodiment of the present invention;

[0032] FIG5 is a fifth structural diagram of a forklift disclosed in an embodiment of the present invention;

[0033] FIG6 is a schematic structural diagram of a tray disclosed in an embodiment of the present invention.

[0034] Explanation of the accompanying drawings: 100-forklift, 110-forklift body, 111-slide rail, 120-floating connection assembly, 121-sliding support seat, 1211-bar hole, 1212-slide groove, 122-slider, 1221-rotating shaft, 123-driving member, 1231-articulated shaft, 124-sleeve, 130-connecting rod mechanism, 131-first connecting rod, 132-second connecting rod, 133-load-bearing wheel bracket, 140-load-bearing wheel, 150-fork arm, 160-auxiliary support wheel; 200-pallet, 210-reinforcement rib. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] The terms "first," "second," and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present invention can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of a class, and do not limit the number of objects. For example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0037] The technical solutions disclosed in various embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0038] In the related art, a forklift 100 includes a fork arm 150 and a load-bearing wheel 140 disposed at the front end of the fork arm 150. When the forklift 100 is in operation, the load-bearing wheel 140 at the front end of the fork arm 150, supported by a linkage mechanism 130, protrudes from the bottom surface of the fork arm 150 and contacts the ground, thereby increasing the load capacity of the forklift 100. When the forklift 100 is moving or transporting goods, the load-bearing wheel 140 at the front end of the fork arm 150 will inevitably come into contact with obstacles or goods. Due to the support of the linkage mechanism 130, the load-bearing wheel 140 and the obstacles or goods will come into rigid contact, which can easily cause damage to the load-bearing wheel 140 or the goods.

[0039] For example, referring to FIG6 , when the forklift 100 is moving a pallet 200, it is necessary to extend the fork arm 150 into the insertion hole of the pallet 200 and then control the fork arm 150 to lift the pallet 200 off the ground to move the pallet 200 and the goods on the pallet 200. Because the insertion hole of the pallet 200 is provided with a reinforcing rib 210, the reinforcing rib 210 will obstruct the load-bearing wheels 140, which may easily cause damage to the load-bearing wheels 140 and the pallet 200 due to rigid contact.

[0040] In response to the above problems, please refer to Figures 1 to 6. An embodiment of the present invention discloses a forklift 100. The disclosed forklift 100 can be an electric forklift, which can include unmanned forklifts and manual forklifts. The forklift 100 can specifically include a forklift body 110, a floating connection assembly 120, a connecting rod mechanism 130 and load-bearing wheels 140.

[0041] Among them, the forklift body 110 is the main frame of the forklift 100. The forklift body 110 is provided with components such as a hydraulic cylinder and a drive wheel. The hydraulic cylinder is used to drive the fork arm 150 and the connecting rod mechanism 130 to rise and fall in the vertical direction to lift or lower the goods. The drive wheel is used to realize the movement and steering functions of the forklift 100.

[0042] The floating connection assembly 120 is mounted on the forklift body 110 and can be assembled to the forklift body 110 through bolting, welding, or clamping. The connecting rod mechanism 130 supports the load-bearing wheels 140. The connecting rod mechanism 130 controls the swing position of the load-bearing wheels 140 through its own rotation and translation, ensuring that the load-bearing wheels 140 maintain contact with the ground at different heights. One end of the connecting rod mechanism 130 is hingedly connected to the floating connection assembly 120, and the other end of the connecting rod mechanism 130 is hingedly connected to the load-bearing wheels 140. This hinged connection can be achieved through the cooperation of a shaft and a hole.

[0043] The floating connection assembly 120 has a first state and a second state. In the first state, the floating connection assembly 120 can float vertically relative to the forklift body 110. Because one end of the connecting rod mechanism 130 is hingedly connected to the floating connection assembly 120, the connecting rod mechanism 130 and the load-bearing wheel 140 can also float vertically relative to the forklift body 110. When the load-bearing wheel 140 encounters an obstacle, the obstacle applies a thrust to the load-bearing wheel 140, causing the load-bearing wheel 140 and the connecting rod mechanism 130 to float upward in the vertical direction, thereby avoiding the obstacle. There is no rigid contact between the load-bearing wheel 140 and the obstacle, which prevents damage to the load-bearing wheel 140 and improves durability.

[0044] Taking the transport pallet 200 as an example, when the fork arm 150 extends into the socket of the pallet 200, the load-bearing wheel 140 will contact the reinforcement rib 210 of the pallet 200. Under the push of the reinforcement rib 210, the load-bearing wheel 140 floats upward in the vertical direction, increasing the ground clearance, thereby avoiding the reinforcement rib 210, so that the fork arm 150 and the load-bearing wheel 140 can be smoothly extended into the socket of the pallet 200. In this process, since there is no rigid contact between the load-bearing wheel 140 and the reinforcement rib 210, the problem of damage to the load-bearing wheel 140 and the reinforcement rib 210 is avoided.

[0045] Since the load-bearing wheel 140 cannot provide support for the forklift 100 when it is floatable, in order to ensure that the load-bearing wheel 140 can be stably supported on the ground during operation, the floating connection assembly 120 can be switched to the second state. In the second state, the floating connection assembly 120 is relatively fixed to the forklift body 110, thereby limiting the floating of the connecting rod mechanism 130 and the load-bearing wheel 140 relative to the forklift body 110 in the vertical direction, so that the load-bearing wheel 140 can be in stable contact with the ground.

[0046] By switching the floating connection assembly 120 between the first state and the second state, the floating obstacle avoidance function of the load-bearing wheel 140 can be realized, and the normal load-bearing function of the load-bearing wheel 140 can be realized, which greatly improves the flexibility of use of the forklift 100.

[0047] It should be noted that the floating connection assembly 120 can float relative to the forklift body 110 in the vertical direction. The floating connection assembly 120 can achieve floating through the cooperation of the slide groove and the slide rail, or through the compression and rebound of the elastic member.

[0048] Exemplarily, the floating connection assembly 120 may include a slide groove and a slide rail. The slide rail may be fixedly arranged on the forklift body 110. The slide groove and the slide rail may slide relative to each other in the vertical direction to realize the floating function, and the slide groove is hinged to the connecting rod mechanism 130, thereby realizing the floating of the connecting rod mechanism 130 and the load-bearing wheel 140. When floating is not required, the slide groove and the slide rail may be locked to limit the relative sliding of the slide groove and the slide rail.

[0049] Alternatively, the floating connection assembly 120 may also include a sleeve, a sleeve rod and an elastic member. The sleeve can be fixed on the forklift body 110, and the sleeve rod and the elastic member are inserted into the sleeve. The elastic member is elastically supported on the sleeve rod and the bottom wall of the sleeve, so that the sleeve rod can elastically move in the sleeve to achieve a floating function. The sleeve rod is hinged to the connecting rod mechanism 130, thereby achieving floating of the connecting rod mechanism 130 and the load-bearing wheel 140; when floating is not required, the sleeve rod and the sleeve can be locked to limit the relative movement of the sleeve rod and the sleeve.

[0050] As can be seen from the above, the forklift 100 disclosed in the technical solution of the present invention improves the relevant technology. By providing a floating connection assembly 120 on the forklift body 110, the load-bearing wheel 140 is hinged to the floating connection assembly 120 through the connecting rod mechanism 130. When the floating connection assembly 120 is in a first state, it can float relative to the forklift body 110 in the vertical direction, so that the connecting rod mechanism 130 and the load-bearing wheel 140 float relative to the forklift body 110 in the vertical direction, thereby allowing the load-bearing wheel 140 to avoid obstacles or goods by floating, thereby avoiding the problem of rigid contact between the load-bearing wheel 140 and the obstacle or goods, which may cause damage to the load-bearing wheel 140 or the goods; when the floating connection assembly 120 is in a second state, it will be fixed relative to the forklift body 110 to limit the floating of the connecting rod mechanism 130 and the load-bearing wheel 140 in the vertical direction relative to the forklift body 110, thereby allowing the load-bearing wheel 140 to be stably supported on the ground.

[0051] In some optional embodiments, as shown in Figures 1 and 2, the floating connection assembly 120 may include a sliding support 121 and a slider 122. The sliding support 121 is slidably connected to the forklift body 110 and can slide vertically relative to the forklift body 110. The sliding support 121 may be U-shaped, and the two opposing side walls of the sliding support 121 are respectively provided with a strip-shaped hole 1211, and the strip-shaped hole 1211 extends in the vertical direction.

[0052] The slider 122 is disposed within the sliding support 121 and is provided with a rotating shaft 1221. The two ends of the rotating shaft 1221 protrude from the slider 122 and are respectively inserted into the two strip-shaped holes 1211, allowing the slider 122 to slide along the extension direction (i.e., the vertical direction) of the strip-shaped holes 1211. One end of the connecting rod mechanism 130 is hingedly connected to the slider 122, specifically through the cooperation of the shaft and the hole. Since the slider 122 can slide along the extension direction (i.e., the vertical direction) of the strip-shaped holes 1211, the connecting rod mechanism 130 and the load wheel 140 can also float along the extension direction (i.e., the vertical direction) of the strip-shaped holes 1211.

[0053] In response to different usage scenarios, the load-bearing wheel 140 needs to have two states: floating and non-floating. This can be achieved by controlling the position of the sliding support seat 121 relative to the forklift body 110. Specifically, the sliding support seat 121 has a first position and a second position relative to the forklift body 110. When in the first position, the strip-shaped hole 1211 has space for the rotating shaft 1221 to slide, and the slider 122 can slide in the vertical direction relative to the sliding support seat 121, thereby allowing the connecting rod mechanism 130 and the load-bearing wheel 140 to float in the vertical direction. When the sliding support seat 121 switches to the second position by sliding, the hole wall of the strip-shaped hole 1211 abuts against the rotating shaft 1221 to limit the sliding of the rotating shaft 1221. The slider 122 cannot slide in the vertical direction relative to the sliding support seat 121, thereby preventing the connecting rod mechanism 130 and the load-bearing wheel 140 from floating in the vertical direction.

[0054] For example, in the vertical direction, the first position can be higher than the second position. As shown in FIG4 , when the sliding support seat 121 is in the first position, the rotating shaft 1221 of the slider 122 is located below the strip hole 1211, and the upper portion of the strip hole 1211 has space for the rotating shaft 1221 to slide, thereby allowing the slider 122 to slide relative to the sliding support seat 121 in the vertical direction. As shown in FIG5 , the slider 122 slides upward and abuts against the upper portion of the strip hole 1211, stopping sliding. During the sliding process of the slider 122, the load-bearing wheel 140 floats upward, increasing the ground clearance and enabling the vehicle to cross obstacles. As shown in FIG3 , when the sliding support seat 121 is lowered to the second position, the position of the strip hole 1211 is also lowered. At this time, the rotating shaft 1221 of the slider 122 is located above the strip hole 1211 and cannot slide, so that the load-bearing wheel 140 cannot float, allowing the load-bearing wheel 140 to be stably supported on the ground.

[0055] Furthermore, as shown in Figures 1 to 5 , the switching of the sliding support base 121 between the first position and the second position can be controlled manually or mechanically. For example, in the case of mechanical control, the floating connection assembly 120 can further include a driver 123 . The driver 123 is disposed on the forklift body 110 and can be fixed by welding, bolting, or other means. The driver 123 can be a motor, a pneumatic cylinder, a hydraulic cylinder, or the like. The driver 123 is connected to the sliding support base 121 to drive the sliding support base 121 to switch between the first position and the second position.

[0056] Furthermore, as shown in Figures 1 and 2, the connection between the driver 123 and the sliding support seat 121 can be fixed or movable. Taking the movable connection as an example, the output end of the driver 123 is provided with a hinge shaft 1231, the sliding support seat 121 is provided with an axial hole, the hinge shaft 1231 is passed through the axial hole, and the driver 123 and the sliding support seat 121 are hinged through the cooperation of the hinge shaft 1231 and the axial hole. With the above-mentioned hinged connection method, when there is an assembly error between the driver 123 and the sliding support seat 121, or when there are forces acting in multiple directions between the driver 123 and the sliding support seat 121, the driver 123 and the sliding support seat 121 can avoid the problem of jamming or deformation during the relative movement of the driver 123 and the sliding support seat 121 by relative rotation and a certain amount of interference.

[0057] In some optional embodiments, as shown in Figures 1 to 5, the sliding support base 121 and the forklift body 110 can slide relative to each other, which can be achieved by the cooperation of the slide groove 1212 and the slide rail 111. Specifically, the slide groove 1212 can be provided on one side of the sliding support base 121, and the slide rail 111 can be provided on the forklift body 110, or the slide rail 111 can be provided on one side of the sliding support base 121, and the slide groove 1212 can be provided on the forklift body 110, and the slide groove 1212 and the slide rail 111 extend in the vertical direction and slide in cooperation, so that the sliding support base 121 can switch between the first position and the second position.

[0058] Furthermore, as shown in Figures 1 to 5, in order to avoid the problem of shaking when the rotating shaft 1221 slides with the bar hole 1211, shaft sleeves 124 can be respectively provided at both ends of the rotating shaft 1221, and the outer diameter of the shaft sleeve 124 matches the inner diameter of the bar hole 1211, so that the outer side of the shaft sleeve 124 is just attached to the inner side of the bar hole 1211 and slides with the inner side of the bar hole 1211, thereby reducing the problem of shaking.

[0059] In addition, the slider 122 is hinged to the connecting rod mechanism 130 , and the sleeve 124 and the rotating shaft 1221 are also assembled in a rotational connection manner, thereby further reducing the interference between the slider 122 , the sliding support seat 121 and the connecting rod mechanism 130 .

[0060] Furthermore, as shown in FIG1 , the forklift 100 may further include a fork arm 150 . The number of fork arms 150 may be one, two, or more, and the number may be selected based on actual handling requirements. The fork arm 150 is provided in correspondence with the connecting rod mechanism 130 . The fork arm 150 includes a chamber for accommodating the connecting rod mechanism 130 and the load-bearing wheel 140 . The load-bearing wheel 140 is provided at the front end of the fork arm 150 to support the fork arm 150 .

[0061] The connecting rod mechanism 130 is hingedly connected to the fork arm 150 and can be raised and lowered synchronously with the fork arm 150 relative to the forklift body 110. When the connecting rod mechanism 130 and the fork arm 150 are raised relative to the forklift body 110, the height of the fork arm 150 above the ground increases. At this time, the connecting rod mechanism 130 drives the load-bearing wheel 140 to swing toward the ground, so that the load-bearing wheel 140 always maintains contact with the ground. When the connecting rod mechanism 130 and the fork arm 150 are lowered relative to the forklift body 110, the height of the fork arm 150 above the ground decreases. At this time, the connecting rod mechanism 130 drives the load-bearing wheel 140 to swing away from the ground, so that the load-bearing wheel 140 partially retracts into the cavity of the fork arm 150 to avoid affecting the normal descent of the fork arm 150.

[0062] Further, as shown in Figures 1 to 2, the connecting rod mechanism 130 may include a first connecting rod 131, a second connecting rod 132 and a load-bearing wheel bracket 133, the first connecting rod 131 is hinged to the slider 122 and the fork arm 150 respectively, the two ends of the second connecting rod 132 are hinged to the first connecting rod 131 and the load-bearing wheel bracket 133 respectively, and the load-bearing wheel bracket 133 is hinged to the fork arm 150 and the load-bearing wheel 140 respectively.

[0063] When the connecting rod mechanism 130 and the fork arm 150 are lifted relative to the forklift body 110, the first connecting rod 131 rotates relative to the fork arm 150 during the lifting process, thereby pushing the second connecting rod 132 to move to the right, and the second connecting rod 132 pushes the load-bearing wheel bracket 133 and the fork arm 150 to rotate relative to each other, causing the load-bearing wheel 140 to swing downward; when the connecting rod mechanism 130 and the fork arm 150 are lowered relative to the forklift body 110, the first connecting rod 131 rotates relative to the fork arm 150 during the lowering process, thereby pulling the second connecting rod 132 to move to the left, and the second connecting rod 132 pulls the load-bearing wheel bracket 133 and the fork arm 150 to rotate relative to each other, causing the load-bearing wheel 140 to swing upward.

[0064] In some optional embodiments, as shown in FIG1 , the forklift 100 may further include auxiliary support wheels 160. The auxiliary support wheels 160 may be provided at the bottom of the forklift body 110, or at the bottom of the fork arm 150. Alternatively, the auxiliary support wheels 160 may be provided at both the bottom of the forklift body 110 and the bottom of the fork arm 150. The auxiliary support wheels 160 may be in contact with the ground to support the forklift body 110 or the fork arm 150, thereby improving the load capacity and stability of the forklift 100. The specific number of the auxiliary support wheels 160 may be one, two, or more than two. In actual configuration, the auxiliary support wheels 160 may be an even number and may be symmetrically distributed on both sides of the forklift body 110 or the fork arm 150. This distribution provides a better support effect.

[0065] In some optional embodiments, as shown in FIG1 , the forklift 100 includes two or more linkage mechanisms 130. The number of floating connection assemblies 120 and load-bearing wheels 140 is equal to the number of linkage mechanisms 130. Correspondingly, the number of fork arms 150 is also equal to the number of linkage mechanisms 130. Each load-bearing wheel 140 is hingedly connected to the floating connection assembly 120 via the linkage mechanism 130, so that each load-bearing wheel 140 can float in the vertical direction to achieve a floating obstacle avoidance function.

Claims

1. A forklift, characterized in that, Comprising: A forklift body (110), a floating connection assembly (120), a link mechanism (130), and a load-bearing wheel (140); The floating connection assembly (120) is provided on the forklift body (110), one end of the link mechanism (130) is hinged to the floating connection assembly (120), and the other end of the link mechanism (130) is hinged to the load-bearing wheel (140) to support the load-bearing wheel (140); The floating connection assembly (120) has a first state and a second state; When in the first state, the floating connection assembly (120) can float relative to the forklift body (110) in the vertical direction, so that the link mechanism (130) and the load-bearing wheel (140) float relative to the forklift body (110) in the vertical direction; When in the second state, the floating connection assembly (120) is relatively fixed to the forklift body (110) to restrict the floating of the link mechanism (130) and the load-bearing wheel (140) relative to the forklift body (110) in the vertical direction.

2. The forklift according to claim 1, characterized in that, The floating connection assembly (120) includes a sliding support base (121) and a slider (122); The sliding support base (121) is slidably connected to the forklift body (110) and can slide relative to the forklift body (110) in the vertical direction. Strip-shaped holes (1211) are respectively provided on two opposite side walls of the sliding support base (121), and the strip-shaped holes (1211) extend in the vertical direction; One end of the link mechanism (130) is hinged to the slider (122), and the slider (122) is provided with a rotating shaft (1221). Both ends of the rotating shaft (1221) are respectively inserted into the two strip-shaped holes (1211) so that the slider (122) can slide relative to the sliding support base (121) in the vertical direction; The sliding support base (121) has a first position and a second position relative to the forklift body (110). When in the first position, there is a space in the strip-shaped hole (1211) for the rotating shaft (1221) to slide. When in the second position, the hole wall of the strip-shaped hole (1211) abuts against the rotating shaft (1221) to restrict the sliding of the rotating shaft (1221).

3. The forklift according to claim 2, characterized in that, The floating connection assembly (120) further includes a driving member (123). The driving member (123) is provided on the forklift body (110) and is connected to the sliding support base (121) to drive the sliding support base (121) to switch between the first position and the second position.

4. The forklift according to claim 3, characterized in that, The output end of the driving member (123) is provided with a hinge shaft (1231), and the sliding support base (121) is provided with a shaft hole. The driving member (123) and the sliding support base (121) are hinged through the cooperation of the hinge shaft (1231) and the shaft hole.

5. The forklift according to claim 2, characterized in that, One of the sliding support base (121) and the forklift body (110) is provided with a sliding groove (1212), and the other is provided with a sliding rail (111). The sliding groove (1212) and the sliding rail (111) extend in the vertical direction and are in sliding fit with each other.

6. The forklift according to claim 2, characterized in that, The floating connection assembly (120) further includes a bushing (124). The bushing (124) is sleeved on both ends of the rotating shaft (1221) respectively and is rotatably connected to the rotating shaft (1221). The outer side of the bushing (124) is in sliding fit with the elongated hole (1211).

7. The forklift according to claim 2, characterized in that, The forklift (100) further includes a fork arm (150). The fork arm (150) is arranged corresponding to the link mechanism (130), and the load-bearing wheel (140) is used for supporting the fork arm (150). The link mechanism (130) is hinged to the fork arm (150) and can be lifted and lowered synchronously with the fork arm (150) relative to the forklift body (110).

8. The forklift according to claim 7, wherein The link mechanism (130) includes a first link (131), a second link (132) and a load-bearing wheel bracket (133). The first link (131) is respectively hinged to the slider (122) and the fork arm (150). Both ends of the second link (132) are respectively hinged to the first link (131) and the load-bearing wheel bracket (133). The load-bearing wheel bracket (133) is respectively hinged to the fork arm (150) and the load-bearing wheel (140).

9. The forklift according to claim 7, wherein The forklift (100) further includes an auxiliary support wheel (160). The auxiliary support wheel (160) is arranged at the bottom of the forklift body (110) and / or the fork arm (150).

10. The forklift according to claim 1, wherein, The forklift (100) includes two or more of the link mechanisms (130). The number of the floating connection assemblies (120) and the load-bearing wheels (140) is equal to the number of the link mechanisms (130). Each load-bearing wheel (140) is hinged to the floating connection assembly (120) through the link mechanism (130).

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