Combined trolley connecting piece

Abstract

The utility model discloses a combined trolley connecting piece which comprises a connecting arm, the left end and the right end of the connecting arm are hinged to a left hoop and a right hoop, each hoop comprises a semicircular plate I welded in a groove opening of channel steel, and the semicircular plate I and a semicircular plate II outside the groove opening are connected through a screw and nut assembly to form a circular holding hole. Or each hoop comprises a semi-oblate plate I welded in the groove opening of the channel steel, and the semi-oblate plate I and a semi-oblate plate II outside the groove opening are connected through a screw and nut assembly to form an oblate embracing hole; a connecting lug is welded on each channel steel, each connecting lug comprises a front side plate, a rear side plate and an upper plate, and coaxial pin holes are formed in the front side plate and the rear side plate; the left end and the right end of the connecting arm are respectively provided with a forward pin hole and a backward pin hole, and the left end and the right end of the connecting arm are respectively arranged in the left connecting lug and the right connecting lug and are hinged through a plug pin which is horizontally arranged in a penetrating mode. According to the bolt type hinge structure, the disassembly and assembly operation is simple, convenient and fast, and a single vehicle can be quickly combined for re-loading and carrying.

Description

Technical Field

[0001] The utility model relates to a connecting piece structure, in particular to a combined trolley connecting piece. Background Art

[0002] In some specific occasions, the side-by-side trolleys need to be used in combination, and the combination method is usually to use a connecting piece with a related structure.

[0003] For example, in the utility model "Safety Oxygen Cylinder and Acetylene Cylinder Trolley" with authorization announcement number CN203450148U, in its technical solution, the detachable connecting parts include two pairs of hooks and hanging grooves respectively arranged on adjacent frames.

[0004] Another example is the utility model "Gas Cylinder Combination Trolley" with authorization announcement number CN203047321 U. In its technical solution, a detachable connecting part is provided between the first side of the first vehicle plate and the first side of the second vehicle plate. Specifically: a pin hole plate is provided horizontally extending outward from the first side of the first vehicle plate, a pin hole is opened on the first side of the second vehicle plate, the pin hole plate is placed on the first side of the second vehicle plate, and a detachable connection is achieved by the cooperation of a pin with the pin hole plate and the pin hole.

[0005] Another example is the utility model "Oxygen Cylinder and Acetylene Cylinder Trolley Short-Distance Transport Connection Device" with authorization announcement number CN212354104U. In its technical solution, a first limit rod, a first fixed block, a limit block, a pressing rod and a first spring are set, and the first limit rod and the limit block cooperate with each other, so that the first limit rod can be firmly fixed inside the first fixed block, so that the first connecting rod and the second connecting rod can be firmly spliced ​​together, thereby increasing the firmness of the structure and making it convenient for the staff to splice the first trolley and the second trolley together. Utility Model Content

[0006] The technical problem to be solved by the utility model is to propose a combined trolley connecting piece which is different from the prior art and provides connecting pieces of various structural types for the combined trolley.

[0007] A combined trolley connector that can solve the above technical problems, its technical solution 1 includes a connecting arm, the left and right ends of the connecting arm are hinged on the left and right clamps, the difference is:

[0008] 1. Each clamp includes a semicircular plate I welded in the notch of the channel steel, and the semicircular plate I is connected to the semicircular plate II outside the notch by a screw and nut assembly to form a circular clamp hole.

[0009] Or each clamp includes a semi-oval plate I welded in the notch of the channel steel, and the semi-oval plate I is connected to the semi-oval plate II outside the notch by a screw and nut assembly to form an oval clamping hole.

[0010] 2. A connecting ear is welded on each channel steel, and the left and right ends of the connecting arm are respectively placed in the left and right connecting ears and hinged by a inserted pin.

[0011] 3. The axis of the latch is located in a forward and backward vertical plane and forms an angle of 0°≤&<90° with the walking surface.

[0012] A combined trolley connector that can solve the above technical problems, its technical solution 2 includes a connecting arm, the left and right ends of the connecting arm are hinged on the left and right clamps, the difference is:

[0013] 1. Each clamp includes a left and right semicircular plate I and a semicircular plate II, which are connected by a screw and nut assembly to form a front and rear circular clamping hole; or each clamp includes a left and right semi-flat circular plate I and a semi-flat circular plate II, which are connected by a screw and nut assembly to form a front and rear flat circular clamping hole.

[0014] 2. The connecting arm comprises a left inner arm tube and a right outer arm tube. A pin sleeve is welded to the outer end of each arm tube. A screw sleeve and a retaining ring are welded on the inner arm tube.

[0015] 2. Connecting ears are welded on the inner semicircular plate or semi-flat circular plate. Each connecting ear includes front and rear side plates and an upper plate. Coaxial pin holes are opened on the front and rear side plates. The left and right pin sleeves are placed in the left and right connecting ears and are hinged by a pin inserted forward.

[0016] 3. The inner arm tube is inserted into the outer arm tube and stops at the retaining ring, and the screw sleeve is screwed on the outer arm tube or the screw sleeve is welded on the outer arm tube.

[0017] A combined trolley connector that can solve the above technical problems, its technical solution three includes a connecting arm, the left and right ends of the connecting arm are hinged on the left and right clamps, the difference is:

[0018] 1. Each clamp includes a left and right square groove plate and a flat plate, and the square groove plate and the flat plate are connected by a screw and nut assembly to form a square clamp hole with the axis facing forward.

[0019] 2. Forks are provided at the left and right ends of the connecting arm, and coaxial pin holes are provided on the front and rear fork bodies of the fork.

[0020] 3. A connecting block is welded on each flat plate, and a pin hole with the axis facing forward is opened on the connecting block. The left and right connecting blocks are placed in the left and right fork heads and are hinged by a pin passing through the forward direction.

[0021] Beneficial effects of the utility model:

[0022] When the utility model is used, the left and right clamps are first installed on the left and right load-bearing beams between the adjacent frames of the side-by-side handcarts, and then the left and right ends of the connecting arm are hinged on the left and right clamps. Due to the adoption of a latch-type hinge structure, the disassembly and assembly operations are simple and easy, and a single vehicle can be quickly combined into a multiple vehicle for transportation, and the multiple vehicles can be quickly separated into a single vehicle for transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an axonometric view of the first embodiment of the utility model.

[0024] Figure 2 for Figure 1 Exploded view of an embodiment.

[0025] Figure 3 This is an axonometric view of the second embodiment of the present utility model.

[0026] Figure 4 for Figure 3 Exploded view of an embodiment.

[0027] Figure 5 This is an axonometric view of the third embodiment of the present utility model.

[0028] Figure 6 for Figure 5 Exploded view of an embodiment.

[0029] Figure number identification: 1. Connecting arm; 11. Inner arm tube; 12. Outer arm tube; 13. Pin sleeve; 14. Fork head; 2. Hoop; 21. Channel steel; 22. Semicircular plate I; 23. Semicircular plate II; 24. Circular holding hole; 25. Square groove plate; 26. Flat plate; 27. Square holding hole; 3. Screw and nut assembly; 4. Connecting ear; 41. Side plate; 42. Upper plate; 5. Pin; 6. Screw sleeve; 7. Retaining ring; 8. Connecting block. DETAILED DESCRIPTION

[0030] The technical solution of the utility model is further described below in conjunction with the implementation modes shown in the accompanying drawings.

[0031] Embodiment 1, as Figure 1 , Figure 2 shown.

[0032] The utility model is a combined trolley connector for connecting left and right side-by-side trolleys, comprising left and right clamps 2, which are installed on left and right load-bearing beams (round steel pipes) between adjacent frames of the trolleys, and a connecting arm 1 is provided between the adjacent frames, and the two ends of the connecting arm 1 are respectively hinged to the left and right clamps 2 to realize the connection between the left and right trolleys.

[0033] The clamp 2 includes left and right semicircular plates I22 and II23. The semicircular plate I22 is welded in the left-facing notch of the channel steel 21. The semicircular plate II23 is connected to the semicircular plate I22 outside the notch by a screw and nut assembly 3 to form a circular clamping hole 24 with the axis facing forward (clamped on the corresponding load-bearing beam of the frame).

[0034] Both ends of the connecting arm 1 are cylindrical ends with a thickness smaller than that of the arm body, and each cylindrical end is provided with a pin hole with its axis facing forward.

[0035] A connecting ear 4 is welded on the inner side surface of each channel steel 21, and each connecting ear 4 includes front and rear vertical side plates 41 and a horizontal upper plate 42 welded as one body. The front and rear side plates 41 are provided with horizontally forward coaxial pin holes. The left and right cylindrical ends of the connecting arm 1 are respectively placed in the left and right connecting ears 4, and the pins 9 are horizontally forwardly penetrated through each pin hole to realize the hinge connection between the connecting arm 1 and the connecting ear 4.

[0036] The upper plate 42 is shorter than the front and rear side plates 41 to form an escape opening that allows the connecting arm 1 to rotate at a certain angle.

[0037] Embodiment 2, as Figure 3 , Figure 4 shown.

[0038] The utility model is a combined trolley connector for connecting left and right side-by-side trolleys, comprising left and right clamps 2, which are installed on left and right load-bearing beams (round steel pipes) between adjacent frames of the trolleys, and a connecting arm 1 is provided between the adjacent frames, and the two ends of the connecting arm 1 are respectively hinged to the left and right clamps 2 to realize the connection between the left and right trolleys.

[0039] Each clamp 2 includes a left and right semicircular plate I 22 and a semicircular plate II 23, and the left and right semicircular plates are connected by a screw and nut assembly 3 to form a circular clamp hole 24 with the axis facing forward (clamped on the corresponding load-bearing beam of the frame).

[0040] The connecting arm 1 includes a left and right inner arm tube 11 and an outer arm tube 12, and a pin sleeve 13 is welded to the outer end of each arm tube. The screw sleeve 6 and the retaining ring 7 are first and then installed on the inner arm tube 11. After the retaining ring 7 is installed in place, it is welded and fixed on the inner arm tube 11.

[0041] A connecting ear 4 is welded on the inner semicircular plate, and each connecting ear 4 includes a front and rear side plate 41 and an upper plate 42. Coaxial pin holes are provided on the front and rear side plates 41. The pin sleeves 13 on the inner arm tube 11 and the outer arm tube 12 are placed in the left and right connecting ears 4 and are hinged by a pin 9 that passes through the front.

[0042] The inner arm tube 11 and the outer arm tube 12 are rotated to make them rotate relative to each other. The inner arm tube 11 is inserted into the outer arm tube 12. The retaining ring 7 is limited at the end of the outer arm tube 12 to determine the length of the connecting arm 1. The screw sleeve 6 is sleeved on the outer arm tube 12 and its position is limited by the retaining ring 7. The screw sleeve 6 is welded and fixed to the outer arm tube 12 to realize the assembly of the connecting arm 1.

[0043] The upper plate 42 is shorter than the front and rear side plates 41 to form an escape opening that allows the connecting arm 1 to rotate at a certain angle.

[0044] Embodiment 3, as Figure 5 , Figure 6 shown.

[0045] The utility model is a combined trolley connector for connecting left and right side-by-side trolleys, comprising left and right clamps 2, which are installed on left and right load-bearing beams (square steel pipes) between adjacent frames of the trolleys, and a connecting arm 1 is provided between the adjacent frames, and the two ends of the connecting arm 1 are respectively hinged to the left and right clamps 2 to realize the connection between the left and right trolleys.

[0046] Each clamp 2 includes left and right square groove plates 25 and a vertical flat plate 26. The square groove plates 25 and the flat plate 26 are connected by a screw and nut assembly 3 to form a square clamp hole 27 (clamped on the load-bearing beam) with the axis facing forward.

[0047] The left and right ends of the connecting arm 1 are both concave to form a fork head 14, and the front and rear fork bodies of the fork head 14 are provided with coaxial pin holes with their axes facing forward.

[0048] A connecting block 8 is welded to the inner side of each flat plate 26 , and a forward pin hole is opened on the connecting block 8 . The left and right connecting blocks 8 are placed in the left and right fork heads 14 and are hinged by a forwardly inserted pin 9 .

[0049] Comparison of the advantages and disadvantages of the utility model with the prior art:

[0050] In the prior art, the relative positions of the two vehicles are usually adjusted by moving the vehicles sideways so as to facilitate the insertion and extraction of the connecting parts for connection and disconnection. In particular, when the vehicles are heavily loaded with goods, it is more difficult to adjust the relative positions of the two vehicles by lifting and pulling them sideways. Unloading the goods to make them light and then connecting and disconnecting the connecting parts virtually adds multiple working steps. In addition, in the connection technology of the prior art, the connection rigidity of the connecting parts is relatively strong. On uneven roads, it is not convenient for the two vehicles to adjust their postures with each other, which is easy to cause strong damage to the component structure.

[0051] By adopting the technical solution of the utility model, the vehicles can be conveniently moved longitudinally and obliquely, so as to adjust the relative positions of the two vehicles before connecting or disconnecting them; the connecting arm can be left alone on one vehicle when it does not play a connecting role and can hang down around the latch without tilting up and occupying space laterally, thereby reducing the width of the vehicle and avoiding scratching other objects; during the driving process of the two vehicles after being combined, each vehicle can rotate around the latch, and when traveling on an uneven road, the two vehicles can flexibly adjust their postures to each other to better adapt to different road conditions.

[0052] Large vehicles without pre-welded connecting ears on the load-bearing components can also be connected using the technical solution of the utility model, especially the design of the inner and outer arm tubes 11 and 12 that can rotate mutually in embodiment 2, which can connect heterogeneous vehicles with different inclination angles in the front and rear directions of the combined load-bearing components.

Claims

1. A combined trolley connecting piece, comprising a connecting arm (1), the left and right ends of the connecting arm (1) being hingedly mounted on left and right clamps (2), characterized in that: Each clamp (2) comprises a semicircular plate I (22) welded in the notch of the channel steel (21), wherein the semicircular plate I (22) is connected to a semicircular plate II (23) outside the notch by a screw and nut assembly (3) to form a circular clamp hole (24); Or each clamp (2) comprises a semi-oval plate I welded in the notch of the channel steel (21), and the semi-oval plate I is connected to the semi-oval plate II outside the notch by a screw and nut assembly (3) to form an oval clamp hole; A connecting ear (4) is welded on each channel steel (21), and the left and right ends of the connecting arm (1) are respectively placed in the left and right connecting ears (4) and hingedly connected by a inserted latch (9); The axis of the latch pin (9) is located in a front and rear vertical plane and forms an angle with the walking road surface that is less than 90° and greater than or equal to 0°.

2. A combined trolley connecting piece, comprising a connecting arm (1), the left and right ends of the connecting arm (1) being hingedly mounted on left and right clamps (2), characterized in that: Each clamp (2) comprises a left semicircular plate I (22) and a right semicircular plate II (23), and the left and right semicircular plates are connected by a screw and nut assembly (3) to form a front and rear circular clamping hole (24); Or each clamp (2) comprises a left and a right semi-oval plate I and a semi-oval plate II, and the left and the right semi-oval plates are connected by a screw and nut assembly to form a front and a rear oval clamping hole; The connecting arm (1) comprises a left inner arm tube (11) and a right outer arm tube (12), the outer end of each arm tube is welded with a pin sleeve (13), and the inner arm tube (11) is sleeved with a screw sleeve (6) and welded with a retaining ring (7); A connecting ear (4) is welded on the inner semicircular plate or the semi-flat circular plate, each connecting ear (4) comprises a front side plate (41) and a rear side plate (42), a coaxial pin hole is provided on the front side plate (41), and a left and right pin sleeve (13) is placed in the left and right connecting ears (4) and hingedly connected by a plug pin (9) inserted forward; The inner arm tube (11) is inserted into the outer arm tube (12) and stops at the retaining ring (7); the screw sleeve (6) is screwed onto the outer arm tube (12) or the screw sleeve (6) is welded onto the outer arm tube (12).

3. A combined trolley connecting piece, comprising a connecting arm (1), the left and right ends of the connecting arm (1) being hingedly mounted on left and right clamps (2), characterized in that: Each clamp (2) comprises a left and right square groove plate (25) and a flat plate (26), wherein the square groove plate (25) and the flat plate (26) are connected by a screw and nut assembly (3) to form a forward-facing square clamp hole (27); The left and right ends of the connecting arm (1) are provided with fork heads (14), and the front and rear fork bodies of the fork heads (14) are provided with coaxial pin holes; A connecting block (8) is welded on each flat plate (26), and a pin hole with the axis facing forward is opened on the connecting block (8). The left and right connecting blocks (8) are placed in the left and right fork heads (14) and are hinged by a pin (9) passing through forward.

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