WO2024011585A1 - 手动叉车 - Google Patents
手动叉车 Download PDFInfo
- Publication number
- WO2024011585A1 WO2024011585A1 PCT/CN2022/105965 CN2022105965W WO2024011585A1 WO 2024011585 A1 WO2024011585 A1 WO 2024011585A1 CN 2022105965 W CN2022105965 W CN 2022105965W WO 2024011585 A1 WO2024011585 A1 WO 2024011585A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- forks
- frame
- transverse direction
- guide rod
- manual forklift
- Prior art date
Links
- 238000005192 partition Methods 0.000 claims description 10
- 210000000078 claw Anatomy 0.000 claims description 8
- 230000004308 accommodation Effects 0.000 claims description 5
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/04—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving means for grappling or securing in place objects to be carried; Loading or unloading equipment
- B62B3/06—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving means for grappling or securing in place objects to be carried; Loading or unloading equipment for simply clearing the load from the ground
- B62B3/0618—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor involving means for grappling or securing in place objects to be carried; Loading or unloading equipment for simply clearing the load from the ground using fluid lifting mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/14—Understructures, i.e. chassis frame on which a vehicle body may be mounted of adjustable length or width
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/12—Platforms; Forks; Other load supporting or gripping members
- B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
Definitions
- This application relates to the technical field of forks, in particular to a manual forklift.
- Manual forklifts are mainly used for loading, unloading, stacking and short-distance transportation of palletized goods. They are indispensable handling equipment in pallet transportation and container transportation.
- a manual forklift has two forks, which are used to carry the pallet together to transport the goods on the pallet to a designated location.
- the distance between the two forks of the existing manual forklift cannot be continuously adjusted, but can only be adjusted to a limited number of sizes. Therefore, it cannot adapt to a variety of pallets of different sizes, causing inconvenience.
- the purpose of this application is to provide a manual forklift to solve the problem that the distance between the two forks of the existing manual forklift cannot be continuously adjusted.
- An embodiment of the present application provides a manual forklift, which defines mutually perpendicular transverse directions, longitudinal directions and vertical directions.
- the manual forklift includes: a frame, defining a position along the vertical direction passing through the frame. The vertical centerline of the center in the transverse direction; two lead screws, relatively independently and rotatably provided on the frame, the two lead screws are respectively arranged along the transverse direction and are respectively located in the vertical direction Opposite sides of the centerline; two slide blocks, respectively threadedly connected with the two screws, and the rotation of the screw drives the slide blocks to move along the transverse direction; two cargo forks, respectively, along the The two cargo forks are arranged in the longitudinal direction and are respectively located on opposite sides of the vertical centerline.
- the two cargo forks are respectively fixedly connected to the two slide blocks; wherein, the rotation of any of the screws causes the slider threadedly connected with it to rotate.
- the block moves along the transverse direction, and the movement of the slide block drives the fork connected thereto to move in a direction closer to or away from the vertical centerline to continuously adjust the distance between the two forks. spacing.
- the embodiment of this application achieves continuous stepless adjustment of the distance between the two forks by arranging threaded screws and sliders, so that it can adapt to a variety of pallets of different sizes and is easy to use;
- the embodiment of the present application facilitates independent adjustment of the positions of the two forks by setting two independent screws. Compared with the solution that can only adjust the positions of the two forks at the same time, it is more flexible and convenient to use.
- Figure 1 is a front view of a manual forklift according to an embodiment of the present application when the forks are in a lower position;
- Figure 2 is a front view of a manual forklift according to an embodiment of the present application when the forks are in a higher position;
- Figure 3 is a left side view of a manual forklift according to an embodiment of the present application.
- Figure 4 is a top view of a manual forklift according to an embodiment of the present application when the distance between two forks is small;
- Figure 5 is a top view of a manual forklift according to an embodiment of the present application when the distance between two forks is large;
- Figure 6 is a bottom view of a manual forklift according to an embodiment of the present application.
- Figure 7 is a perspective view of a manual forklift according to an embodiment of the present application.
- Figure 8 is a schematic diagram of the accommodation space of a manual forklift according to an embodiment of the present application.
- Figure 9 is an exploded schematic diagram of the lifting wheel assembly and the drawbar of the manual forklift according to an embodiment of the present application.
- Figure 10 is a schematic structural diagram of the swing arm of a manual forklift according to an embodiment of the present application.
- an embodiment of the present application provides a manual forklift 100.
- the manual forklift 100 defines a transverse direction W, a longitudinal direction S and a vertical direction H that are perpendicular to each other, where the transverse direction W can be understood as a forklift
- the width direction, the longitudinal direction S can be understood as the length direction of the forklift, and the vertical direction H can be understood as the height direction of the forklift.
- the manual forklift 100 in the embodiment of the present application includes a support wheel 101 (also called a front wheel), two sets of lifting wheels 102 (also called a rear wheel), a push rod 103, two forks 104 and a truck.
- Frame 105 the support wheel 101 is located in front of the vehicle frame 105, and the two sets of lifting wheels 102 are respectively located under the rear ends of the two cargo forks 104.
- the support wheels 101 and the lifting wheels 102 jointly support the vehicle frame 105 and the two cargo forks 104.
- the push rod 103 is disposed in front of the frame 105 and above the support wheel 101.
- the upper end of the push rod 103 is provided with a handle 106 to facilitate the operator to push and pull the push rod 103.
- the frame 105 supports the fork 104, has a center in the transverse direction, and defines a vertical centerline passing through the center of the frame 105 in the vertical direction.
- the two forks 104 are respectively arranged along the longitudinal direction and located at opposite sides of the vertical centerline.
- the manual forklift 100 in the embodiment of the present application also includes two screws 107 and two slide blocks 108 .
- the two screws 107 are relatively independent and rotatably provided on the frame 105.
- the two screws 107 are respectively arranged in the transverse direction and located on opposite sides of the vertical center line. In other words, the two screws 107
- the axial direction is parallel to said transverse direction.
- the two lead screws 107 can only rotate around their own central axes, but cannot move along their own axial direction.
- the two slide blocks 108 are threadedly connected to the two lead screws 107 respectively, and the rotation of the lead screws 107 causes the slide blocks 108 to move in the transverse direction.
- the two cargo forks 104 are respectively fixedly connected to the two slide blocks 108 so as to be able to move in the transverse direction along with the slide blocks 108 .
- the rotation of any one of the screws 107 causes the slider 108 threadedly connected to it to move in the lateral direction.
- the movement of the slider 108 drives the cargo fork 104 connected to it to move in a direction closer to or away from the vertical centerline to continuously adjust the two sides.
- the distance between the forks 104 (as shown in Figures 4 and 5).
- the slider 108 connected to it moves in a direction away from the vertical centerline, thereby increasing the distance between the two forks 104; by rotating the screw 107 counterclockwise, , causing the slider 108 connected thereto to move in a direction close to the vertical centerline, thereby reducing the distance between the two forks 104 .
- the embodiment of the present application realizes the continuous stepless adjustment of the distance between the two forks 104 by arranging the threaded screw 107 and the slider 108, so that it can adapt to a variety of pallets of different sizes and is very convenient to use.
- the embodiment of the present application provides two independent screws 107 to facilitate independent adjustment of the positions of the two forks 104.
- it is more flexible and convenient to use.
- you can only adjust the position of the other fork 104, thereby adjusting the distance between the two forks 104.
- Purpose when the solution that can only adjust two forks 104 at the same time, when the above situation is encountered, one fork 104 restricted by the obstacle will hinder the movement of the other fork 104, resulting in the movement of the two forks 104.
- the position cannot be adjusted and is inconvenient to use.
- the spacing between the two forks 104 is anywhere from 16 inches to 27 inches, such as 18 inches, 20 inches, 23 inches, or 25 inches.
- the adjustable spacing range between the two forks 104 can also be set to other numerical ranges according to actual needs, such as setting the minimum spacing to less than 16 inches, and/or setting the maximum spacing to greater than 27 inches.
- the manual forklift 100 also includes a first guide rod 109.
- the first guide rod 109 is fixed on the frame 105 and is disposed in the transverse direction.
- the first guide rod 109 passes through two sliders.
- the block 108 is used to guide the two slide blocks 108 to move in the transverse direction, and to limit the rotation of the slide blocks 108 with the lead screw 107 .
- the number of first guide rods 109 may be two, and the two first guide rods 109 guide two slide blocks 108 respectively.
- the number of the first guide rod 109 may also be one.
- the one first guide rod 109 guides the two slide blocks 108 at the same time.
- the length of the first guide rod 109 is not less than the longest sliding length of the two slide blocks 108. sum of distances.
- the manual forklift 100 further includes two drawbars 110 (shown in Figure 6).
- the two drawbars 110 are respectively disposed on the two forks 104 in the longitudinal direction. bottom, and are respectively connected to the lifting wheel assembly provided below the cargo fork 104.
- the lifting wheel assembly includes the aforementioned lifting wheel 102.
- two connecting sleeves 111 respectively connected to the two drawbars 110 and a second guide for guiding the connecting sleeves 111 to slide in the transverse direction are also provided.
- Rod 112 (shown in Figure 8).
- the second guide rod 112 is fixed on the vehicle frame 105 and is arranged in the transverse direction.
- the two connecting sleeves 111 are slidably sleeved outside the second guide rod 112 and are respectively connected with the two sliding sleeves.
- the position of the block 108 corresponds to that at least part of each connecting sleeve 111 extends into the corresponding sliding block 108 .
- the connecting sleeve 111 can move synchronously with the slider 108 .
- the slider 108 can push the connecting sleeve 111 to slide synchronously along the second guide rod 112 .
- One end of the two drawbars 110 is rotatably connected to the two connecting sleeves 111 respectively, and the other end of the two drawbars 110 is rotatably connected to the lifting wheel assembly, so the drawbar 110 can follow the connecting sleeves 111, the slider 108 and the cargo fork. 104 moves synchronously in the transverse direction, so that the fork 104 and its linked components move more smoothly.
- the number of the second guide rods 112 may be two, and the two second guide rods 112 guide the two connecting sleeves 111 respectively.
- the number of the second guide rod 112 may also be one.
- the one second guide rod 112 guides the two connecting sleeves 111 at the same time.
- the length of the second guide rod 112 is not less than the longest sliding distance of the two connecting sleeves 111. sum of distances.
- the manual forklift 100 further includes a support base 113 , a hydraulic pump 114 , a swing arm 115 and at least one third guide rod 116 .
- the support wheel 101 is rotatably disposed below the support base 113
- the push rod 103 is swingably disposed above the support base 113 .
- the hydraulic pump 114 is fixed above the support base 113.
- the hydraulic pump 114 has a hydraulic rod 117 arranged in the vertical direction.
- the hydraulic rod 117 is connected to the frame 105.
- the hydraulic rod 117 moves upward in the vertical direction.
- the drive frame 105 and the two forks 104 are raised, so that the forks 104 can lift the pallet.
- the hand-held handle 106 repeatedly presses the push rod 103, and the push rod 103 drives the hydraulic rod 117 to move upward, thereby raising the two cargo forks 104.
- one end 118 of the swing arm 115 is rotatably connected to the support base 113, and the other end 119 of the swing arm 115 is rotatably connected to the second guide rod 112.
- the second guide rod 112 is rotated.
- the rod 112 moves upward along the vertical direction with the frame 105.
- the other end 119 of the swing arm 115 also rises, and the one end 118 of the swing arm 115 is limited by the support base 113 and has a constant height, so it is equivalent to The swing arm 115 swings downward around the second guide rod 112 .
- the third guide rod 116 is fixed on the other end 119 of the swing arm 115.
- the third guide rod 116 is arranged in the transverse direction and passes through the two connecting sleeves 111.
- the two connecting sleeves 111 are connected to the third connecting sleeve 111.
- Three guide rods 116 are slidably fitted.
- the function of the third guide rod 116 is to, on the one hand, guide the connecting sleeve 111 to slide smoothly in the transverse direction together with the second guide rod 112, and on the other hand, transmit the swing motion of the swing arm 115 to the traction rod 110 through the connecting sleeve 111, so that the traction rod 110 can be pulled.
- Rod 110 drives the lifting wheel assembly to rotate.
- FIG 9 shows the structure of the lift wheel assembly.
- the lifting wheel assembly includes a swing rod 120 and a lifting wheel 102.
- One end 121 of the swing rod 120 is rotationally connected to the other end of the drawbar 110, and the other end 122 of the swing rod 120 is rotationally connected to the lifting wheel 102;
- the swing rod A part between the two ends of the swing rod 120 is rotationally connected with the fork 104 to form a pivot part 123.
- the pivot part 123 is close to one end 121 of the swing rod 120 and away from the other end 122 of the swing rod 120; one end 121 of the swing rod 120 is located at The front side of the pivot portion 123 (as shown in Figure 1).
- the vehicle frame 105 includes a frame 124 , a cover 125 and a partition 126 .
- the frame 124 is provided with two chutes 127 corresponding to the two cargo forks 104 respectively.
- the two chutes 127 respectively extend in the transverse direction.
- the two cargo forks 104 are respectively slidingly connected to the two chutes 127.
- the chutes 127 are opposite to the cargo.
- the guidance and support of the fork 104 makes the movement of the fork 104 in the transverse direction smoother.
- the sliding connection method between the fork 104 and the chute 127 is that a sliding plate 128 is provided on the side of the chute 127 facing away from the fork 104.
- the sliding plate 128 is connected to the fork 104 through bolts 129 passing through the chute 127.
- the bolts 129 can slide along the chute 127, thereby realizing the sliding connection between the fork 104 and the chute 127.
- the cover plate 125 is fixed above the frame 124, and a receiving space 130 is formed between the cover plate 125 and the frame 124 (as shown in Figure 3).
- the rod 109, the second guide rod 112 and the third guide rod 116 are all arranged in the accommodation space 130 to make the appearance of the forklift cleaner.
- the shape of the cover 125 is an inverted V shape or an isosceles trapezoid.
- the partition 126 is arranged along the vertical centerline in the accommodation space 130.
- the partition 126 is fixedly connected to the frame 124 and the cover 125 respectively.
- the partition 126 is used to support the two lead screws 107, the first Guide rod 109 and second guide rod 112 .
- one end of the two screws 107 is connected to the side wall of the cover plate 125, and the other end is connected to the partition plate 126.
- the first guide rod 109 and the second guide rod 112 pass through the partition plate 126 or are connected to the partition plate 126.
- the partition 126 may be a vertical plate or an H-shaped plate frame formed by connecting multiple plates.
- each slider 108 has two front pawls 131 and at least one rear pawl 132 .
- the two front claws 131 are spaced apart in the transverse direction.
- the two front claws 131 are respectively located on opposite sides of the corresponding connecting sleeve 111 and slide with the second guide rod 112.
- the advantage of this arrangement is that on the one hand, the two front claws 131 can slide
- the block 108 can push the connecting sleeve 111 to slide in the transverse direction through the two front claws 131.
- the second guide rod 112 can support and guide the movement of the slider 108 to make the slider 108 move more smoothly.
- the rear claw 132 slides and cooperates with the guide groove 133 provided in the transverse direction on the frame 105.
- the guide groove 133 can also support and guide the movement of the slider 108, making the slider 108 move more smoothly.
- the manual forklift 100 further includes a manually operable rotating handle 134.
- the rotating handle 134 is detachably connected to the screw 107 to drive the screw 107 to rotate. Since the rotating handle 134 is detachably connected to the lead screw 107, when there is no need to adjust the distance between the two forks 104, the rotating handle 134 can be removed from the forklift to shorten the overall width of the forklift.
- the number of the rotating handle 134 may be one, and the rotating handle 134 may be connected to any one of the lead screws 107 .
- the number of rotating handles 134 may also be two to be connected to the two lead screws 107 respectively.
- one of the rotary handle 134 and the lead screw 107 is provided with a non-circular slot 135 and the other is provided with a non-circular plug 136.
- the rotary handle 134 is connected through a plug-in fit between the plug and the slot. It is connected to the screw 107, so the rotating handle 134 can be connected or separated from the screw 107 by plugging and unplugging, and the operation is simple and convenient.
- the shape of the non-circular socket 135 and the non-circular plug 136 may be polygonal or other non-circular shapes.
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
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Abstract
一种手动叉车,包括:车架,限定沿竖向方向穿过车架在横向方向上的中心的竖向中心线;两个丝杠,相对独立且可旋转地设于车架上,两个丝杠分别沿横向方向设置且分别位于竖向中心线的相对两侧;两个滑块,分别与两个丝杠螺纹连接,丝杠的旋转驱使滑块沿横向方向移动;两个货叉,分别沿纵向方向设置且分别位于竖向中心线的相对两侧,两个货叉分别与两个滑块固定连接。本申请的手动叉车的两个货叉之间的间距可连续调节,使用方便。
Description
本申请涉及货叉技术领域,尤其是一种手动叉车。
手动叉车主要用于对托盘货物进行装卸、堆垛和短距离运输,是托盘运输和集装箱运输中必不可少的搬运设备。
手动叉车具有两个货叉,两个货叉用于共同承载托盘,以将托盘上的货物运送到指定地点。然而,现有手动叉车的两个货叉之间的间距不可连续调节,而只能调节为有限的几种尺寸,从而无法适应多种不同尺寸的托盘,造成使用不便。
发明内容
本申请的目的是提供一种手动叉车,以解决现有手动叉车的两个货叉之间的间距不可连续调节的问题。
本申请实施例提供一种手动叉车,其限定相互垂直的横向方向、纵向方向和竖向方向,所述手动叉车包括:车架,限定沿所述竖向方向穿过所述车架在所述横向方向上的中心的竖向中心线;两个丝杠,相对独立且可旋转地设于所述车架上,两个所述丝杠分别沿所述横向方向设置且分别位于所述竖向中心线的相对两侧;两个滑块,分别与两个所述丝杠螺纹连接,所述丝杠的旋转驱使所述滑块沿所述横向方向移动;两个货叉,分别沿所述纵向方向设置且分别位于所述竖向中心线的相对两侧,两个所述货叉分别与两个所述滑块固定连接;其中,任一所述丝杠的旋转使与其螺纹连接的滑块沿所述横向方向移动,所述滑块的所述移动带动与其连接的所述货叉朝靠近或远离所述竖向中心线的方向移动,以连续调节两个所述货叉之间的间距。
本申请实施例的手动叉车的优点包括:
1、本申请实施例通过设置螺纹连接的丝杠和滑块,实现对两个货叉之间间距的连续无级调节,从而能适应多种不同尺寸的托盘,使用方便;
2、本申请实施例通过设置两个相互独立的丝杠,方便独立调节两个货叉的位置,与只能同时调节两个货叉位置的方案相比,使用更加灵活方便。
此处所说明的附图用来提供对本申请的进一步理解,构成本申请的一部分,并不构成对本申请的限定。在附图中:
图1是本申请一实施例的手动叉车在货叉处于较低位置时的主视图;
图2是本申请一实施例的手动叉车在货叉处于较高位置时的主视图;
图3是本申请一实施例的手动叉车的左侧视图;
图4是本申请一实施例的手动叉车在两个货叉间距较小时的俯视图;
图5是本申请一实施例的手动叉车在两个货叉间距较大时的俯视图;
图6是本申请一实施例的手动叉车的仰视图;
图7是本申请一实施例的手动叉车的立体示意图;
图8是本申请一实施例的手动叉车的容纳空间内的示意图;
图9是本申请一实施例的手动叉车的升降轮组件和牵引杆的分解示意图;
图10是本申请一实施例的手动叉车的摆臂的结构示意图。
为使本申请实施例的目的、技术方案和优点更加清楚明白,下面结合附图对本申请实施例做进一步详细说明。在此,本申请的示意性实施例及其说明用于解释本申请,但并不作为对本申请的限定。
如图1、图7所示,本申请实施例提供一种手动叉车100,所述手动叉车100限定相互垂直的横向方向W、纵向方向S和竖向方向H,其中横向方向W可理解为叉车的宽度方向,纵向方向S可理解为叉车的长度方向,竖向方向H可理解为叉车的高度方向。
如图1所示,本申请实施例的手动叉车100包括支撑轮101(也称为前轮)、两组升降轮102(也称为后轮)、推杆103、两个货叉104和车架105,支撑轮101设于车架105的前方,两组升降轮102分别设于两个货叉104的后端下方,支撑轮101和升降轮102共同支撑车架105和两个货叉104。推杆103设于车架105的前方,且位于支撑轮101的上方,推杆103的上端设有手柄106,以方便操作人员推拉推杆103。
车架105对货叉104起到支撑作用,车架105具有在所述横向方向上的中心,车架105限定沿竖向方向穿过车架105的所述中心的竖向中心线。两个货叉104分别沿纵向方向设置且分别位于竖向中心线的相对两侧。
如图6、图8所示,本申请实施例的手动叉车100还包括两个丝杠107和两个滑块108。两个丝杠107相对独立且可旋转地设于车架105上,两个丝杠107分别沿横向方向设置且分 别位于竖向中心线的相对两侧,换句话说,两个丝杠107的轴向方向平行于所述横向方向。在车架105的限制下,两个丝杠107只能绕自身的中心轴线旋转,而不能沿自身的轴向方向运动。两个滑块108分别与两个丝杠107螺纹连接,丝杠107的旋转使滑块108沿横向方向移动。两个货叉104分别与两个滑块108固定连接,以能随着滑块108沿横向方向移动。其中,任意一个丝杠107的旋转使与其螺纹连接的滑块108沿横向方向移动,滑块108的移动带动与其连接的货叉104朝靠近或远离竖向中心线的方向移动,以连续调节两个货叉104之间的间距(如图4、图5所示)。例如,通过沿顺时针旋转丝杠107,使与其连接的滑块108朝远离竖向中心线的方向移动,从而将两个货叉104之间的间距调大;通过沿逆时针旋转丝杠107,使与其连接的滑块108朝靠近竖向中心线的方向移动,从而将两个货叉104之间的间距调小。
本申请实施例通过设置螺纹连接的丝杠107和滑块108,实现了对两个货叉104之间间距的连续无级调节,从而能适应多种不同尺寸的托盘,使用非常方便。
本申请实施例通过设置两个相互独立的丝杠107,方便独立调节两个货叉104的位置,与只能同时调节两个货叉104位置的方案相比,使用更加灵活方便。比如,在使用叉车的过程中,当遇到某一个货叉104被障碍物限制而无法移动的情况,可以仅调节另一个货叉104的位置,从而达到调节两个货叉104之间间距的目的。然而,对于只能同时调节两个货叉104的方案来说,当遇到上述情况时,被障碍物限制的一个货叉104会阻碍另一个货叉104的移动,导致两个货叉104的位置都无法调节,使用不便。
在一些实施例中,两个货叉104之间的间距为16英寸至27英寸范围内的任意数值,比如18英寸、20英寸、23英寸或25英寸。当然,也可以根据实际需要将两个货叉104之间的可调间距范围设置为其它数值范围,比如将最小间距设置为小于16英寸,和/或,将最大间距设置为大于27英寸。
如图8所示,在一些实施例中,手动叉车100还包括第一引导杆109,第一引导杆109固定在车架105上且沿横向方向设置,第一引导杆109穿过两个滑块108,用于引导两个滑块108沿横向方向移动,并且起到限制滑块108随丝杠107旋转的作用。
其中,第一引导杆109的数量可以是两个,两个第一引导杆109分别引导两个滑块108。可选地,第一引导杆109的数量也可以是一个,该一个第一引导杆109同时引导两个滑块108,该第一引导杆109的长度不小于两个滑块108的最长滑动距离之和。
如图6、图8所示,在一些实施例中,手动叉车100还包括两个牵引杆110(如图6所示),两个牵引杆110分别沿纵向方向设置在两个货叉104的底部,且分别与设于货叉104下方的升降轮组件连接,升降轮组件包括前述的升降轮102。为了使牵引杆110能够随着货叉104 沿横向方向同步移动,还设置了分别与两个牵引杆110连接的两个连接套111、以及用于引导连接套111沿横向方向滑动的第二引导杆112(如图8所示)。
具体是,如图8所示,第二引导杆112固定在车架105上且沿横向方向设置,两个连接套111分别可滑动地套在第二引导杆112外,且分别与两个滑块108的位置对应,每个连接套111的至少部分伸入对应的滑块108内。当滑块108沿横向方向移动时,连接套111能随着滑块108同步移动,换句话说,滑块108能够推动连接套111沿第二引导杆112同步滑动。两个牵引杆110的一端分别与两个连接套111转动连接,两个牵引杆110的另一端分别与升降轮组件转动连接,因此牵引杆110能随着连接套111、滑块108和货叉104沿横向方向同步移动,从而使货叉104及与其连动的部件移动更平稳。
其中,第二引导杆112的数量可以是两个,两个第二引导杆112分别引导两个连接套111。可选地,第二引导杆112的数量也可以是一个,该一个第二引导杆112同时引导两个连接套111,该第二引导杆112的长度不小于两个连接套111的最长滑动距离之和。
在一些实施例中,如图8所示,手动叉车100还包括支撑座113、液压泵114、摆臂115和至少一个第三引导杆116。支撑轮101可转动地设于支撑座113的下方,推杆103可摆动地设于支撑座113上方。
参见图1和图8,液压泵114固定于支撑座113上方,液压泵114具有沿竖向方向设置的液压杆117,液压杆117与车架105连接,液压杆117通过沿竖向方向向上移动,驱动车架105和两个货叉104升高,以使货叉104能够将托盘托起。具体操作时,手持手柄106反复下压推杆103,推杆103驱动液压杆117向上移动,从而使两个货叉104升高。本申请中液压杆117和推杆103的相互作用原理与现有技术的手动叉车相同,推杆103的操作方法也与现有技术的手动叉车相同,故不赘述。
参见图1、图8和图10,摆臂115的一端118与支撑座113转动连接,摆臂115的另一端119与第二引导杆112转动连接,当车架105升高时,第二引导杆112随车架105沿竖向方向向上移动,相应地,摆臂115的另一端119也升高,而摆臂115的一端118受支撑座113的限制,高度是不变的,因此相当于摆臂115绕第二引导杆112向下摆动。
参见图1、图8和图10,第三引导杆116固定在摆臂115的另一端119,第三引导杆116沿横向方向设置并穿过两个连接套111,两个连接套111与第三引导杆116滑动配合。第三引导杆116的作用是,一方面和第二引导杆112共同引导连接套111沿横向方向平稳滑动,另一方面将摆臂115的摆动运动通过连接套111传递给牵引杆110,使牵引杆110驱动升降轮组件转动。具体是,当液压泵114驱动车架105和两个货叉104升高时,连接套111随着摆臂115绕第二引导杆112向下摆动,连接套111的向下摆动驱使牵引杆110推动升降轮组件朝下 摆动,从而使升降轮组件能够支撑升高的货叉104(如图2所示)。
图9示出了升降轮组件的结构。如图9所示,升降轮组件包括摆动杆120和升降轮102,摆动杆120的一端121与牵引杆110的另一端转动连接,摆动杆120的另一端122与升降轮102转动连接;摆动杆120的两端之间的一部位与货叉104转动连接形成枢接部位123,该枢接部位123靠近摆动杆120的一端121且远离摆动杆120的另一端122;摆动杆120的一端121位于该枢接部位123的前侧(如图1所示)。因此当连接套111绕第二引导杆112向下摆动时,牵引杆110受连接套111的推动作用朝后移动,从而推动摆动杆120的一端121绕该枢接部位123朝后和朝上摆动,相应地,摆动杆120的另一端122绕该枢接部位123朝前和朝下摆动,从而使摆动杆120的另一端122的升降轮102下降(如图2所示),以支撑升高的货叉104。
如图1、图7所示,在一些实施例中,车架105包括框架124、盖板125和隔板126。框架124设有分别与两个货叉104对应的两个滑槽127,两个滑槽127分别沿横向方向延伸,两个货叉104分别与两个滑槽127滑动连接,滑槽127对货叉104的引导和支撑使得货叉104沿横向方向的移动更加平稳性。例如,货叉104和滑槽127的滑动连接方式是,滑槽127的背对货叉104的一侧设有滑板128,滑板128通过穿过滑槽127的螺栓129与货叉104连接,螺栓129能沿滑槽127滑动,从而实现货叉104与滑槽127的滑动连接。
盖板125固定在框架124上方,盖板125和框架124之间形成容纳空间130(如图3所示),两个丝杠107、两个滑块108、两个连接套111、第一引导杆109、第二引导杆112和第三引导杆116均设于容纳空间130内,以使叉车的外观更加整洁。例如盖板125的形状为倒V形或等腰梯形。
如图8所示,隔板126在容纳空间130内沿竖向中心线设置,隔板126分别与框架124和盖板125固定相接,隔板126用于支撑两个丝杠107、第一引导杆109和第二引导杆112。具体是,两个丝杠107的一端与盖板125的侧壁连接,另一端与隔板126连接,第一引导杆109和第二引导杆112穿过隔板126或与隔板126连接。隔板126可以是一个竖板,也可以由多个板连接构成的呈H形状的板架。
如图8所示,在一些实施例中,每个滑块108具有两个前凸爪131和至少一个后凸爪132。两个前凸爪131在横向方向上间隔设置,两个前凸爪131分别位于对应的连接套111的相对两侧,且与第二引导杆112滑动配合,这样设置的好处是,一方面滑块108能通过两个前凸爪131推动连接套111沿横向方向滑动,另一方面第二引导杆112能支撑和引导滑块108的移动,使滑块108的移动更平稳。后凸爪132与车架105上沿横向方向设置的导槽133滑动配合,导槽133也能支撑和引导滑块108的移动,使滑块108的移动更平稳。
如图1、图3所示,在一些实施例中,手动叉车100还包括可手动操作的旋转把手134,旋转把手134与丝杠107可拆卸地连接,以驱动丝杠107旋转。由于旋转把手134与丝杠107可拆卸地连接,当不需要调节两个货叉104之间的间距时,可以将旋转把手134从叉车上卸下,以缩短叉车的整体宽度。
其中,旋转把手134的数量可以是一个,旋转把手134可以与任意一个丝杠107连接。可选地,旋转把手134的数量也可以是两个,以分别与两个丝杠107连接。
在一些实施例中,旋转把手134和丝杠107中的一者设有非圆形插槽135且另一者设有非圆形插头136,通过插头和插槽的插接配合将旋转把手134和丝杠107连接,因此通过插拔的操作方式即可将旋转把手134与丝杠107连接或分离,操作简单方便。非圆形插槽135和非圆形插头136的形状可以是多边形或其它非圆形形状。
以上所述仅为本申请的实施例而已,并不用于限制本申请。对于本领域技术人员来说,本申请可以有各种更改和变化。凡在本申请的精神和原理之内所作的任何修改、等同替换、改进等,均应包含在本申请的权利要求范围之内。
Claims (10)
- 一种手动叉车,其中,所述手动叉车限定相互垂直的横向方向、纵向方向和竖向方向,包括:车架,限定沿所述竖向方向穿过所述车架的中心的竖向中心线;两个丝杠,相对独立且可旋转地设于所述车架上,两个所述丝杠分别沿所述横向方向设置且分别位于所述竖向中心线的相对两侧;两个滑块,分别与两个所述丝杠螺纹连接,所述丝杠的旋转驱使所述滑块沿所述横向方向移动;两个货叉,分别沿所述纵向方向设置且分别位于所述竖向中心线的相对两侧,两个所述货叉分别与两个所述滑块固定连接;其中,任一所述丝杠的旋转使与其螺纹连接的滑块沿所述横向方向移动,所述滑块的所述移动带动与其连接的所述货叉朝靠近或远离所述竖向中心线的方向移动,以连续调节两个所述货叉之间的间距。
- 如权利要求1所述的手动叉车,其中,还包括:第一引导杆,固定在所述车架上,且沿所述横向方向设置,所述第一引导杆穿过两个所述滑块,用于引导两个所述滑块沿所述横向方向移动。
- 如权利要求1或2所述的手动叉车,其中,还包括:第二引导杆,固定在所述车架上,且沿所述横向方向设置;两个连接套,分别可滑动地套在所述第二引导杆外,且分别与两个所述滑块的位置对应,所述连接套的至少部分伸入对应的所述滑块内,以使所述连接套能随着所述滑块沿所述横向方向移动;两个牵引杆,分别沿所述纵向方向设置在两个所述货叉的底部,两个所述牵引杆的一端分别与两个所述连接套转动连接,两个所述牵引杆的另一端分别与两个所述货叉底部的升降轮组件转动连接,以使所述牵引杆能随着所述连接套和所述滑块沿所述横向方向移动。
- 如权利要求3所述的手动叉车,其中,还包括:支撑座;液压泵,设于所述支撑座上方,所述液压泵具有沿所述竖向方向设置的液压杆,所述液压杆与所述车架连接,用于驱动所述车架和两个所述货叉升高;摆臂,其一端与所述支撑座转动连接,其另一端与所述第二引导杆转动连接;至少一个第三引导杆,固定在所述摆臂的另一端,所述第三引导杆沿所述横向方向设置并穿过两个所述连接套;其中,当所述液压泵驱动所述车架和两个所述货叉升高时,所述连接套随着所述摆臂绕所述第二引导杆向下摆动,所述连接套的向下摆动驱使所述牵引杆推动所述升降轮组件朝下摆动。
- 如权利要求4所述的手动叉车,其中,还包括:支撑轮,可转动地设于所述支撑座下方;推杆,可摆动地设于所述支撑座上方,所述推杆的上端设有手柄。
- 如权利要求4所述的手动叉车,其中,所述车架包括:框架,设有分别与两个所述货叉对应的两个滑槽,两个所述滑槽分别沿所述横向方向延伸,两个所述货叉分别与两个所述滑槽滑动连接;盖板,固定在所述框架上方,所述盖板和所述框架之间形成容纳空间,两个所述丝杠、两个所述滑块、两个所述连接套、所述第二引导杆和所述第三引导杆均设于所述容纳空间内;隔板,在所述容纳空间内沿所述竖向中心线设置,所述隔板分别与所述框架和所述盖板固定相接,用于支撑两个所述丝杠和所述第二引导杆。
- 如权利要求3所述的手动叉车,其中,每个所述滑块具有:在所述横向方向上间隔设置的两个前凸爪,两个所述前凸爪分别位于对应的所述连接套的相对两侧,且与所述第二引导杆滑动配合;后凸爪,与所述车架上沿所述横向方向设置的导槽滑动配合。
- 如权利要求1或2所述的手动叉车,其中,还包括:可手动操作的旋转把手,与所述丝杠可拆卸地连接,以驱动所述丝杠旋转。
- 如权利要求8所述的手动叉车,其中,所述旋转把手和所述丝杠中的一者设有非圆形插槽且另一者设有非圆形插头,所述插头和所述插槽通过插接配合将所述旋转把手和所述丝杠连接。
- 如权利要求1或2所述的手动叉车,其中,两个所述货叉之间的间距为16英寸至27英寸范围内的任意数值。
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CN111498755A (zh) * | 2020-05-29 | 2020-08-07 | 青岛宇方机器人工业股份有限公司 | 一种具备货叉自动调整功能的叉车 |
CN109896469B (zh) * | 2019-04-08 | 2020-09-25 | 杭叉集团股份有限公司 | 托盘搬运车 |
CN114314447A (zh) * | 2022-01-27 | 2022-04-12 | 王福业 | 一种多功能货叉架及叉车 |
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GB729461A (en) * | 1952-06-11 | 1955-05-04 | Yale & Towne Mfg Co | Improvements relating to pallet trucks |
FR2810613A1 (fr) * | 2000-06-22 | 2001-12-28 | Loc Manutention | Dispositif a leviers de renvoi pour le relevage des fourches d'un chariot de type transpalette |
US20070116548A1 (en) * | 2005-11-18 | 2007-05-24 | Cooper David A | Fork-type pallet-lifting device |
CN104671154A (zh) * | 2013-11-27 | 2015-06-03 | 铜陵市精品工具模具有限责任公司 | 一种叉车用自动调节式货叉 |
CN109896469B (zh) * | 2019-04-08 | 2020-09-25 | 杭叉集团股份有限公司 | 托盘搬运车 |
CN111498755A (zh) * | 2020-05-29 | 2020-08-07 | 青岛宇方机器人工业股份有限公司 | 一种具备货叉自动调整功能的叉车 |
CN114314447A (zh) * | 2022-01-27 | 2022-04-12 | 王福业 | 一种多功能货叉架及叉车 |
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