Liftable material transfer trolley

Abstract

The invention relates to the technical field of transfer trolleys, in particular to a liftable material transfer trolley which comprises a lifting assembly. The guide structure is connected with the lifting assembly; the trigger device is connected with the lifting assembly through the transmission mechanism and drives the lifting assembly to ascend and descend through the transmission mechanism. The circulating clamping groove assembly is provided with a limiting connecting piece and at least two positioning positions. The lifting assembly is connected with the circulating clamping groove assembly through a limiting connecting piece. The trigger device can drive the lifting assembly to ascend and descend through the transmission mechanism and drive the limiting connecting piece to controllably and circularly move between the two positioning positions of the circulating clamping groove assembly so as to change the height of the lifting assembly. The material transfer trolley solves the problems that a conventional lifting trolley is too many in action and tedious in operation, and the material transfer efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of transfer vehicles, in particular to a liftable material transfer vehicle. Background Art

[0002] Material trolleys are widely used in industrial production. They can transport materials more easily and reduce the labor intensity of employees. For some small-sized materials and when there is a height difference between the discharge port and the target feed port, the material trolley often needs to be equipped with a liftable hopper. If necessary, the hopper needs to be designed to be angle-adjustable. The material trolleys with lifting functions on the market are relatively simple in structure. The lifting, locking, unlocking and angle adjustment of the hopper usually require multiple independent operations, which is inconvenient to use and has low material transfer efficiency. Summary of the Invention

[0003] In order to solve the above problems, the present invention proposes a liftable material transfer trolley, which solves the problem of excessive movements and complicated operations of conventional lifting trolleys, thereby improving the material transfer efficiency.

[0004] To achieve the above object, the technical solution adopted by the present invention is: The liftable material transfer trolley is characterized by: Lifting components; A guide structure, connected to the lifting assembly and used to guide the lifting assembly to move vertically; A trigger device is connected to the lifting assembly through a transmission mechanism, and the trigger device drives the lifting assembly to move up and down through the transmission mechanism; A circulation slot assembly, wherein the circulation slot assembly is provided with a limit connection piece and at least two positioning positions; The lifting assembly is connected to the circulation slot assembly through a limiting connector; the trigger device can drive the lifting assembly to rise and fall through a transmission mechanism, and drive the limiting connector to move in a controllable cycle between the two positioning positions of the circulation slot assembly to change the height of the lifting assembly.

[0005] Preferably, the circulation slot assembly includes: A card plate, one side surface of which is provided with a circulation groove, wherein the circulation groove has an upper dead point and a lower dead point; The limiting connecting member is a rocker arm, and the two ends of the rocker arm are shaft bodies. The shaft body at the first end of the rocker arm is placed in the circulation groove, and the shaft body at the second end of the rocker arm is rotatably connected to the hole structure on the lifting assembly; The shaft body at the first end of the rocker arm can move cyclically in a controllable manner between the top dead center and the bottom dead center.

[0006] Preferably, the upper and lower parts of the circulation groove form a "V"-shaped structure, and the upper dead point and the lower dead point are located at the turning point of the "V"-shaped structure; The upper and lower parts of the circulation groove form two sides of a "V" shape structure, and the two ends of the structure are communicated through part of the groove.

[0007] Preferably, a guide piece is arranged near the turning point of the lower "V" shape structure in the circulation groove to limit the one-way communication in the circulation groove.

[0008] Preferably, the middle part of the guide piece is rotatably connected to a clamping plate, and the clamping plate is provided with a groove near the guide piece, the first arm of the guide piece is placed in the circulation groove, and the first arm of the guide piece is placed in the groove to limit the rotation angle of the guide piece.

[0009] Preferably, the circulation clamping groove assembly further comprises a torsion spring, the first force arm of the torsion spring is connected to the lifting assembly, and the second force arm of the torsion spring is connected to the upper part of the swing rod to drive the swing rod to move in the expected direction.

[0010] Preferably, the circulation clamping groove assembly has two and is arranged on opposite sides of the lifting assembly.

[0011] Preferably, the liftable material transfer trolley further comprises a base plate, the guide structure is a linear bearing B arranged on the base plate, the trigger device is a pedal limited to move vertically, and the transmission mechanism is a movable pulley wheel set.

[0012] Preferably, the top of the lifting assembly is a hopper, the top of the hopper is provided with a pushing handle for pushing and pulling the hopper to move, and the hopper is connected to the main body of the lifting assembly through a sliding guide.

[0013] Preferably, the two sides of the hopper sliding reversely forward are provided with a transition piece assembly for docking the hopper with an external device.

[0014] The beneficial effects of using the present application are: The liftable material transfer trolley changes the height of the lifting assembly by controlling the circulation movement of the swing rod in the two positioning positions of the circulation groove through the ingenious structure of the circulation clamping groove assembly, and only triggers the trigger device twice in one working cycle, greatly simplifying the operation process of the material trolley. The device is suitable for transporting small-size scattered materials between two positions with height difference. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic view of the shaft side of the liftable material transfer trolley of the present application.

[0016] Figure 2 It is a front view of the liftable material transfer trolley of the present application.

[0017] Figure 3It is a side view of the liftable material transfer trolley of the present invention.

[0018] Figure 4 It is a rear view of the liftable material transfer trolley of the present invention.

[0019] Figure 5 for Figure 4 Cross-sectional view along CC direction.

[0020] Figure 6 A schematic diagram of the circulation card slot assembly.

[0021] Reference numerals include: 1-Trolley frame; 2-Castor; 3-Base plate; 4-Lifting assembly; 5-Guide roller; 6-Linear bearing mounting plate; 7-Foot lever assembly; 8-Pulley assembly A; 9-Linear bearing A; 10-Wire rope; 11-Circulation slot assembly; 111-Card plate; 1111-Circulation slot; 112-Swing rod; 1121-Swing arm upper point; 1122-Swing arm lower point; 113-Torsion spring; 114-Guide plate ;12-Linear bearing B;13-Pulley assembly B;14-Hopper;15-Hopper angle adjustment screw;16-Transition piece assembly;17-Hopper pull rod A;18-Hopper pull rod B;19-Hopper return spring;20-Push handle;21-Stroke limit column;22-Hydraulic buffer;23-Trolley handle;24-Pulley assembly C;25-Pulley assembly D;26-Adjusting bolt;27-Guide rod. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of this technical solution more clear, the following technical solution is further described in detail in conjunction with specific implementation methods. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of this technical solution.

[0023] In order to solve the problem of inconvenient use of the material transfer trolley in the prior art, this embodiment proposes a liftable material transfer trolley.

[0024] like Figure 1As shown, the main body of the liftable material transfer trolley is a trolley frame 1, which is a frame-like structure composed of square tube structures. Casters 2 are provided at the four corners of the bottom of the trolley frame 1. These casters 2 are wheel sets with foot-operated locking mechanisms. Guide rollers 5 are mounted on the front crossbeam below the trolley frame 1. These guide rollers 5 are used to dock with external devices to align the entire material transfer trolley with the external devices. A base plate 3 is located in the middle of the height direction of the trolley frame 1, serving as a mounting platform for several internal components. Four linear bearings B12 are mounted on the base plate 3. Guide rods 27 are installed at the four corners of the bottom of the base lift assembly 4. The four guide rods 27 are mounted in the four linear bearings B12 to guide the lift assembly 4 vertically. A trolley handle 23 is provided at the rear of the upper portion of the trolley frame 1. The handle 23 is used by the user to push and pull the handle to move the entire material transfer trolley.

[0025] Linear bearing mounting plates 6 are respectively provided on the left and right sides of the lower part of the trolley frame 1, and linear bearings A9 are provided on the surfaces on the opposite sides of the two linear bearing mounting plates 6. The guiding direction of the linear bearing A9 is vertical. A foot rod assembly 7 is provided at the rear of the lower part of the lower frame, and the two ends of the foot rod assembly 7 are respectively installed in two linear bearings A9. The linear bearings A9 are used to limit and guide the foot rod assembly 7 to only be able to rise and fall vertically.

[0026] like Figure 1 As shown, a pulley assembly A8 is installed on the left and right sides of the pedal rod assembly 7. Figure 2-Figure 5 As shown, two pulley assemblies D25 are further provided on the lower surface of the base plate 3, and two pulley assemblies C24 are further provided on the upper surface of the base plate 3. Furthermore, two sets of pulley assemblies B13 are provided below the base plate 3. There are two pulley assemblies A8, B13, C24, and D25, respectively. These two sets are divided into two groups, with each set of pulley assemblies A8, B13, C24, and D25 provided on one side of the trolley frame 1.

[0027] Each set of pulley assembly A8, pulley assembly B13, pulley assembly C24, and pulley assembly D25 forms a pulley block. The first end of a steel wire rope 10 is connected to the base plate 3. The steel wire rope 10 then passes through pulley assembly A8, pulley assembly D25, pulley assembly B13, and pulley assembly C24 in sequence, before the other end of the steel wire rope 10 is connected to the lifting assembly 4. Because pulley assembly A8 is fixedly mounted on the footrest assembly 7, when the footrest assembly 7 is lowered, the pulley block and steel wire rope 10 cooperate to drive the lifting assembly 4 upward. This pulley block forms a labor-saving movable pulley block.

[0028] In combination Figure 6 As shown in the drawings, the circulating slot assembly 11 in the present application is provided with a limiting connector and at least two positioning positions. The lifting assembly 4 is connected with the circulating slot assembly 11 through the limiting connector; the trigger device can drive the lifting assembly 4 to lift and drive the limiting connector to controllably circulate in the two positioning positions of the circulating slot assembly 11, so as to change the height of the lifting assembly 4.

[0029] The circulating slot assembly 11 has two and is respectively arranged on the opposite sides of the lifting assembly 4. The circulating slot assembly 11 includes a clamping plate 111 and a swing rod 112. The clamping plate 111 has a circulating slot 1111 opened on one side surface, and the circulating slot 1111 has an upper stop point B and a lower stop point D. The swing rod 112 has two ends as shaft bodies. The shaft body of a first end 1121 of the swing rod is arranged in the circulating slot 1111, and the shaft body of a second end 1122 of the swing rod is rotatably connected with a hole structure on the lifting assembly 4. The shaft body of the first end 1121 of the swing rod is controllably circulated in the upper stop point B and the lower stop point D.

[0030] Specifically, the upper part and the lower part of the circulating slot 1111 are formed as “V”-shaped structures. The upper stop point B and the lower stop point D are located at the turning positions of the “V”-shaped structures. The two side ends of the upper part and the lower part of the circulating slot 1111, which are formed as “V”-shaped structures, are connected through part of the slot of the circulating slot 1111. The lower part of the “V”-shaped structure in the circulating slot 1111 is provided with a guide piece 114 for limiting the one-way connection in the circulating slot 1111. The middle part of the guide piece 114 is rotatably connected with the clamping plate 111. The clamping plate 111 is provided with a groove near the guide piece 114. The first arm of the guide piece 114 is arranged in the circulating slot 1111, and the first arm of the guide piece 114 is arranged in the groove, so as to limit the rotation angle of the guide piece 114. The circulating slot assembly 11 further includes a torsion spring 113. The first force arm of the torsion spring 113 is connected with the lifting assembly 4, and the second force arm of the torsion spring 113 is connected with the upper part of the swing rod 112, so as to drive the swing rod 112 to move in the expected direction.

[0031] When the user steps on the pedal rod assembly 7, the pedal rod assembly 7 drives the lifting assembly 4 to rise through the pulley set and the wire rope 10. At this time, the first end 1121 of the rocker arm 112 moves upward from the lower dead point D in the circulation groove 1111. Due to the limitation of the guide plate 114, the first end 1121 of the rocker arm is limited by the circulation groove 1111 and moves to the first intermediate point A. After the user releases the pedal rod assembly 7, the pedal rod assembly 7 falls. During this process, the torsion spring 113 drives the first end 1121 of the rocker arm to enter the upper dead point B, and drives the first end 1121 of the rocker arm to fall to the upper dead point B. At this time, the first end 1121 of the rocker arm can be maintained at the upper dead point B, and the lifting assembly 4 can also be positioned at a higher position. For example, after the user steps on the pedal rod assembly 7, the pedal rod assembly 7 drives the lifting assembly 4 to rise through the pulley set and the wire rope 10. At this time, the first end 1121 of the swing rod 112 moves up from the top dead center B. Due to the action of the torsion spring 113, the first end 1121 of the swing rod can only move to the right side of the circulation groove 1111 and move to the second intermediate point C. After the user releases the pedal rod assembly 7, the first end 1121 of the swing rod moves down from the second intermediate point C to the bottom dead center D. During this process, the first end 1121 of the swing rod can pass over the guide piece 114. This reciprocating process can achieve the effect that one working cycle only requires the trigger device to be triggered twice.

[0032] In this embodiment, a pulley system is used for transmission. In some feasible embodiments, similar methods such as connecting rods, synchronous belts, gear racks, etc. can be used to connect the pedal assembly 7 and the lifting assembly 4 to achieve the same effect.

[0033] In addition, if Figure 1 As shown, the top of the lifting assembly 4 is a hopper 14, and a push handle 20 is provided on the top of the hopper 14 for pushing and pulling the hopper 14. The hopper 14 is connected to the main body of the lifting assembly 4 through a sliding guide. Transition piece assemblies 16 are provided on both sides of the front of the sliding direction of the hopper 14 for connecting the hopper 14 to an external device.

[0034] When the hopper 14 is at its lowest point (initial state), the material cart is manually pushed to dock with the lower material collection point. During docking, the guide roller 5 is aligned with the positioning groove of the material collection point. After the guide roller 5 is in place, the brake on the caster 2 is pressed with the foot. At this time, the material cart is docked. During the process of the guide roller 5 being in place, the transition piece assembly 16 will contact the block of the material collection point (not shown in the figure). After the material cart is in place, the transition piece assembly 16 is just unfolded, and the pushing handle 20 is used to transfer the material from the loading point to the hopper 14. After the material is loaded, the brake on the caster 2 is unlocked with the foot, and the material cart is removed. The transition piece assembly 16 is retracted by the action of the tension spring, and the cart is manually pushed to the vicinity of the higher discharge point. The above device can achieve semi-automatic docking between the hopper 14 and the external device, which is very convenient to use.

[0035] In addition, the hopper 14 is connected with the lifting assembly 4 through a hinged structure, so that the hopper 14 has the ability to swing back and forth, that is, to achieve angular adjustment within a certain range. A hopper reset spring 19 and an adjusting bolt 26 are arranged at the rear of the lifting assembly 4. The hopper reset spring 19 always provides a downward pulling force, so that the state of the hopper 14 remains stable when the angle changes. When the lifting assembly is at the lowest point, the hopper pull rods 17 and 18 are in a relaxed state, and the bottom of the hopper 14 is in contact with the top of the adjusting bolt 26 under the pulling force of the hopper reset spring 19. By screwing the adjusting bolt 26, the length of the adjusting bolt 26 can be changed, thereby changing the angle of the hopper 14.

[0036] The hopper pull rods A 17 and B 18 are arranged at the front below the hopper 14. Specifically, the top surface of the base plate 3 is provided with a bracket at the front, and the bracket is provided with a hopper angle adjusting screw 15. One end of the hopper pull rods A 17 and B 18 is hingedly connected to form a connecting body, the second end of the hopper pull rod A 17 is hingedly connected to the lower part of the hopper 14, and the second end of the hopper pull rod B 18 is hingedly connected to the bracket. The hopper angle adjusting screw 15 can adjust the maximum included angle that can be formed between the hopper pull rod B 18 and the base plate 3, thereby adjusting the maximum extendable angle of the hopper pull rods A 17 and B 18 as a whole, for adjusting the angle of the hopper 14 when it is lifted to the highest point.

[0037] In addition, a stroke limiting column 21 is arranged below the lifting assembly 4, and an oil buffer 22 is arranged on the top surface of the base plate 3. The stroke limiting column 21 and the oil buffer 22 cooperate to limit the maximum lifting distance of the lifting assembly 4, and reduce vibration and noise through the oil buffer 22.

[0038] The material transfer trolley greatly simplifies the operation process of the material trolley through the ingenious structure of the circulating clamping groove assembly 11, which only needs to be triggered twice by the triggering device in one working cycle. The device is suitable for transporting small-size scattered materials between two locations with height difference.

[0039] It should be noted that, in the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. At the same time, in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0040] The above content is only a preferred embodiment of the present invention. For ordinary technicians in this field, many changes can be made in the specific implementation methods and application scope based on the ideas of the present technical content. As long as these changes do not deviate from the concept of the present invention, they all fall within the scope of protection of this patent.

Claims

1. The liftable material transfer trolley is characterized by: include Lifting components; A guide structure, connected to the lifting assembly and used to guide the lifting assembly to move vertically; A trigger device is connected to the lifting assembly through a transmission mechanism, and the trigger device drives the lifting assembly to move up and down through the transmission mechanism; A circulation slot assembly, wherein the circulation slot assembly is provided with a limit connection piece and at least two positioning positions; The lifting assembly is connected to the circulation slot assembly through a limiting connector; the trigger device can drive the lifting assembly to rise and fall through a transmission mechanism, and drive the limiting connector to move in a controllable cycle between the two positioning positions of the circulation slot assembly to change the height of the lifting assembly.

2. The liftable material transfer vehicle according to claim 1, characterized in that: The circulation slot assembly comprises: A card plate, one side surface of which is provided with a circulation groove, wherein the circulation groove has an upper dead point and a lower dead point; The limiting connecting member is a rocker arm, and the two ends of the rocker arm are shaft bodies. The shaft body at the first end of the rocker arm is placed in the circulation groove, and the shaft body at the second end of the rocker arm is rotatably connected to the hole structure on the lifting assembly; The shaft body at the first end of the rocker arm can move cyclically in a controllable manner between the top dead center and the bottom dead center.

3. The liftable material transfer vehicle according to claim 2, characterized in that: The upper and lower parts of the circulation groove both form a "V"-shaped structure, and the top dead center and the bottom dead center are located at the turning point of the "V"-shaped structure; The upper and lower parts of the circulation groove form a "V"-shaped structure, and the ends on both sides are connected through part of the groove of the circulation groove.

4. The liftable material transfer vehicle according to claim 3, characterized in that: A guide plate for limiting one-way communication in the circulation groove is provided near the turning point of the "V"-shaped structure in the lower part of the circulation groove.

5. The liftable material transfer vehicle according to claim 4, characterized in that: The middle part of the guide piece is rotatably connected to the clamping plate, and the clamping plate is provided with a groove near the guide piece. The first arm of the guide piece is placed in the circulation groove, and the first arm of the guide piece is placed in the groove to limit the rotation angle of the guide piece.

6. The liftable material transfer vehicle according to claim 2, characterized in that: The circulation slot assembly further comprises a torsion spring, a first lever arm of the torsion spring being connected to the lifting assembly, and a second lever arm of the torsion spring being connected to the upper portion of the rocker arm to drive the rocker arm to move in a desired direction.

7. The liftable material transfer vehicle according to claim 2, characterized in that: There are two circulation slot assemblies, which are respectively arranged on opposite sides of the lifting assembly.

8. The liftable material transfer vehicle according to claim 1, characterized in that: The liftable material transfer trolley further comprises a base plate, the guide structure is a linear bearing B arranged on the base plate, the trigger device is a pedal restricted in vertical movement, and the transmission mechanism is a movable pulley wheel set.

9. The liftable material transfer vehicle according to any one of claims 1 to 8, characterized in that: The top of the lifting assembly is a hopper, and the top of the hopper is provided with a pushing handle for pushing and pulling the hopper to move. The hopper is connected to the main body of the lifting assembly through a sliding guide.

10. The liftable material transfer vehicle according to claim 9, characterized in that: Transition piece assemblies for docking the hopper with an external device are provided on both sides of the front side of the sliding reverse side of the hopper.

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