Opening and closing mechanism for top cover of open-top box body

Abstract

The invention discloses an opening and closing mechanism for a top cover of an open-top box body. The top cover of the open-top box body is longitudinally and oppositely opened along the open-top box body; the outer side edges of the left top cover and the right top cover are hinged to the two side walls of the open-top box body respectively, and top cover rotating shafts are arranged on the inner side edges of the longitudinal axis of the open-top box body respectively. Two ends of top cover rotating shafts of the left and right top covers are positioned on two end wall sides of the open top box body and are respectively in driving hinge with left and right top cover driving devices which have the same structure and are symmetrically arranged; the top cover driving device is composed of a driving end top cover opening and closing system, a driven end top cover opening and closing system and a transmission device. According to the opening and closing mechanism, the sector gear is meshed with the driving gear, the large transmission ratio is achieved, the rotating torque is amplified, the connecting rod and the top cover are driven to achieve opening and closing movement, and operation is convenient; the driven end top cover opening and closing system is connected with the driving end top cover opening and closing system through a lower transmission device, so that the two sides of the top cover can be driven by the top cover opening and closing mechanism to rotate synchronously, and deformation caused by the fact that the top cover is driven to be opened and closed by a single side is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of transportation equipment design, in particular to the technical field of open-top box design, and specifically relates to an opening and closing mechanism for a top cover of an open-top box. Background Art

[0002] The top cover of existing open-top boxes is usually opened and closed by motor drive or hydraulic drive, which requires electricity when opening and closing. The top cover cannot be opened and closed in places without power supply, which limits the application of such open-top boxes; the top cover is usually heavy, and if it is opened and closed manually, a lot of force is required, which is very difficult to operate. Therefore, it is necessary to design a top cover opening and closing mechanism that can realize manual opening and closing of the top cover and save effort. Summary of the Invention

[0003] The invention discloses a top cover opening and closing mechanism for an open top box body. The purpose of the invention is to provide a top cover opening and closing mechanism which can open and close the top cover manually and saves effort.

[0004] The present invention is achieved through the following technical solutions:

[0005] A top cover opening and closing mechanism for an open-top box, wherein the top cover of the open-top box opens in the longitudinal direction of the open-top box; the outer edges of the left and right top covers are respectively hinged to the two side walls of the open-top box, and the inner edges of the top cover rotating shafts located on the longitudinal axis of the open-top box are respectively provided; the mechanism is characterized in that the top cover rotating shafts of the left and right top covers are located on the two end walls of the open-top box and are respectively driven and hinged to the left and right top cover driving devices of the same structure and arranged symmetrically; the top cover driving device is composed of an active end top cover opening and closing system, a driven end top cover opening and closing system, and a transmission device;

[0006] The active end cover opening and closing system includes a worm gear drive device and a drive lever fixedly mounted on the lower side of the end wall of the open-top box body; the worm gear drive device includes: a drive worm, a worm wheel driven by the drive worm, and a drive gear driven by the worm wheel and hingedly mounted on the end wall of the open-top box body; the drive lever includes a connecting rod and a sector gear, one end of the connecting rod is hingedly connected to the top cover rotating shaft, and the other end is fixedly connected to the sector vertex of the sector gear and hingedly mounted on the end wall of the open-top box body; the sector edge of the sector gear is provided with teeth that cooperate with the drive gear;

[0007] The driven end top cover opening and closing system includes a driving lever with the same system structure as the active end top cover opening and closing system; the transmission device is arranged at the bottom of the open top box body, and includes a transmission shaft arranged longitudinally along the open top box body; the transmission shaft is connected to the driving gear at the active end top cover opening and closing system end, and a driven gear is fixedly arranged at the driven end top cover opening and closing system end to cooperate with the sector gear for driving.

[0008] Furthermore, the driving worm of the worm gear drive device is hingedly fixed to the end wall of the open-top box through a rotating shaft mounting seat and is symmetrically arranged, and the outer end of the driving worm is driven by a pointed tail ratchet wrench.

[0009] Furthermore, an arc-shaped guide groove is provided on the inner side of the sector edge of the sector gear, and the arc-shaped guide groove is sleeved on a guide shaft fixed to the end wall of the open-top box body and is limited and moved by the guide shaft.

[0010] Furthermore, the connecting rod of the driving lever and the vertex connection of the sector gear are hinged to the end wall of the open-top box through an axis fixed to the end wall of the open-top box, and an axis end baffle for limiting the rotation of the driving lever is also fixed on the end wall of the open-top box outside the connecting rod and the vertex connection of the sector gear.

[0011] Furthermore, the worm wheel and the driving gear of the worm gear drive device are connected through a gear reduction device.

[0012] Furthermore, the transmission shaft of the transmission device is a three-section structure that is connected and driven to each other, and is rotatably fixed to the bottom of the open-top box body through an F-type square bearing seat. The transmission shaft includes end shafts at both ends and a middle shaft in the middle, and the end shafts and the two middle shafts are connected by connecting flanges.

[0013] The opening and closing principle of the top cover opening and closing mechanism of the open-top box body of the present invention is as follows: the top cover opening and closing mechanism is driven by a pointed-tail ratchet wrench to drive the worm at the input end of the worm gear drive device, which drives the drive gear to rotate through the output end of the worm gear reducer. The edge of the fan gear is toothed and meshes with the drive gear. Under the action of the drive gear, the fan gear guide groove rotates around the guide shaft, and the rotation of the fan gear drives the connecting rod to rotate. The driven end top cover opening and closing system is connected to the driving gear of the active end top cover opening and closing system through the lower transmission device. When the gear of the active end top cover opening and closing system rotates, the lower transmission device rotates under the drive of the active end opening and closing system drive gear. The driven gear provided at the other end of the lower transmission device meshes with the fan gear of the driven end top cover opening and closing system. The fan gear of the driven end top cover opening and closing system is driven by the driven gear of the lower transmission device, and the guide groove rotates around the guide shaft, and the rotation of the fan gear drives the connecting rod to rotate. The connecting rods of the active and passive top cover opening and closing systems are movably connected to the two side shafts of the top cover. These two side shafts are driven by the connecting rods of the active and passive top cover opening and closing systems to rotate. The top cover shafts drive the top cover to rotate around the rotating arms (rotating axes) at the edge of the top cover. Manually rotating the pointed-tail ratchet wrench forward or reversely rotates the output gear of the worm gear drive. This different rotation direction changes the rotation direction of the drive lever connected to the top cover, thereby opening or closing the top cover.

[0014] The top cover opening and closing mechanism of the present invention has a large transmission ratio by meshing the sector gear and the driving gear, which amplifies the rotational torque several times and drives the connecting rod and the top cover to realize the opening and closing movement, greatly reducing the force required for opening and closing the top cover, and making the operation easier.

[0015] The driven-end cover opening and closing system of the present invention is connected to the active-end cover opening and closing system via a lower transmission mechanism. Manually operating a pointed-tail ratchet wrench on the active end drives the driven end, allowing both sides of the cover to rotate synchronously under the drive of the cover opening and closing mechanism. This prevents deformation of the cover during opening and closing caused by unilateral drive. The present invention utilizes a gear transmission, which offers the advantages of a large transmission ratio, high transmission efficiency, smooth operation, and labor-saving operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the top cover opening and closing mechanism of the present invention;

[0017] Figure 2 This is a front structural diagram of the top cover opening and closing system of the active end of the top cover opening and closing mechanism of the present invention;

[0018] Figure 3 This is a schematic side structural diagram of the top cover opening and closing system of the active end of the top cover opening and closing mechanism of the present invention;

[0019] Figure 4 This is a front structural diagram of the top cover opening and closing system of the driven end of the top cover opening and closing mechanism of the present invention;

[0020] Figure 5 It is a schematic diagram of the lower transmission device of the top cover opening and closing mechanism of the present invention;

[0021] Figure 6 This is a schematic diagram of the connection between the transmission device of the top cover opening and closing mechanism and the active end opening and closing system of the present invention;

[0022] Figure 7 This is a schematic diagram showing the connection between the transmission device of the top cover opening and closing mechanism and the driven end opening and closing system of the present invention;

[0023] Figure 8 It is a schematic diagram of the top cover opening and closing mechanism of the present invention in the top cover open state.

[0024] In the figure, 1 is the active end top cover opening and closing system, 2 is the driven end top cover opening and closing system, 3 is the transmission device, and 4 is the pointed tail ratchet wrench;

[0025] 1-1 is the driving gear, 1-2 is the sector gear, 1-3 is the worm gear drive device, 1-4 is the connecting rod, 1-5 is the guide shaft, 1-6 is the shaft end baffle, 1-7 is the worm gear drive device mounting seat, 1-8 is the sector gear mounting seat, 1-9 is the rotating shaft mounting seat, 1-10 is the bolt; 3-1 is the middle shaft, 3-2 is the end shaft, 3-3 is the end connecting flange, 3-4 is the F-type square bearing seat, 3-5 is the middle connecting flange, 3-6 is the connecting pipe, 3-7 is the driven gear, 3-8 is the gear seat, and 3-9 is the fastening connector. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with specific embodiments. The specific embodiments are further explanations of the principles of the present invention and do not limit the present invention in any way. Technologies that are the same or similar to the present invention do not exceed the scope of protection of the present invention.

[0027] Combined with the attached drawings.

[0028] like Figure 1 As shown, this embodiment is a labor-saving gear-driven top cover opening and closing mechanism, which consists of an active end top cover opening and closing system 1, a driven end top cover opening and closing system 2, a lower transmission device 3 and a pointed tail ratchet wrench 4.

[0029] like Figure 2 、 Figure 3 As shown, the active end top cover opening and closing system 1 consists of a driving gear 1-1, a sector gear 1-2, a worm gear drive device 1-3, a connecting rod 1-4, a guide shaft 1-5, a shaft end baffle 1-6, a mounting seat 1-7, a sector gear mounting seat 1-8, a rotating shaft mounting seat 1-9, and a bolt 1-10. The worm gear drive 1-3 is mounted on a mounting base 1-7, which is fixed to the end wall of the open-top housing. The input end of the worm gear drive 1-3 is mounted on a rotating shaft mounting base 1-9, and the drive gear 1-1 is drivingly connected to the output end of the worm gear drive 1-3. The sector gear 1-2 is hingedly mounted on the sector gear mounting base 1-8 and is in driving engagement with the drive gear 1-1. An arcuate guide groove is provided at the bottom of the sector gear 1-2. During movement, the sector gear 1-2 is constrained in the guide groove by a guide shaft 1-5 fixed to the end wall of the open-top housing, and moves along an arcuate trajectory. The shaft end baffle 1-6 is fixed to the sector gear mounting base 1-8 by bolts 1-10, which serves to position the sector gear 1-2. One end of the connecting rod 1-4 is welded to the sector gear 1-2, and the other end is movably connected to the top cover rotating shaft. The active end top cover opening and closing system 1 is symmetrically arranged on each left and right side of the housing.

[0030] like Figure 4As shown, the driven-end top cover opening and closing system 2 consists of a sector gear 1-2, a connecting rod 1-4, a guide shaft 1-5, a shaft end baffle 1-6, a sector gear mounting base 1-8, and bolts 1-10. The sector gear 1-2 is mounted on the sector gear mounting base 1-8 and meshes with the driven gear 3-7 connected to the lower transmission 3. During movement, the sector gear 1-2 follows the trajectory of the guide groove and is limited by the guide shaft 1-5. The shaft end baffle 1-6 is connected to the sector gear mounting base 1-8 via bolts 1-10, which serves to position the sector gear 1-2. The connecting rod 1-4 is welded to the sector gear 1-2 at one end and flexibly connected to the top cover shaft at the other end. The driven-end top cover opening and closing system 2 is symmetrically arranged on each left and right side of the housing.

[0031] like Figure 5 As shown, the lower transmission device 3 consists of a middle shaft 3-1, an end shaft 3-2, an end connecting flange 3-3, an F-type square bearing seat 3-4, a middle connecting flange 3-5, a connecting pipe 3-6, a driven gear 3-7, a gear seat 3-8 and related fastening connectors 3-9. The lower transmission device 3 is connected to the active end top cover opening and closing system 1 and the driven end top cover opening and closing system 2 respectively through two connecting pipes 3-6. The connecting pipe 3-6 is installed and fixed by the F-type square bearing seat 3-4. The two connecting pipes 3-6 are connected by the middle shaft 3-1 and the middle connecting flange 3-5 through bolts and other fastening connectors 3-9; the end connecting flange 3-3 and the end shaft 3-2 located on the active end top cover opening and closing system side 1 are connected to the driving gear 1-1 of the active end top cover opening and closing system 1 at one end through bolts and other fastening connectors 3-9, and the other end is connected to the connecting pipe 3-6; the end connecting flange 3-3 and the end shaft 3-2 located on the driven end top cover opening and closing system 2 side are connected to the driven gear 3-7 at one end through bolts and other fastening connectors 3-9, and the other end is connected to the connecting pipe 3-6; the driven gear 3-7 is installed on the gear seat 3-8 and meshes with the fan gear 1-8 of the driven end top cover opening and closing system 2. The lower transmission device 3 is symmetrically arranged on each of the left and right sides of the box.

[0032] As shown in the figure, Figure 6 This is a schematic diagram of the connection between the top cover opening and closing mechanism transmission device and the active end opening and closing system of the present invention. Figure 7 This is a schematic diagram of the connection between the top cover opening and closing mechanism transmission device and the driven end opening and closing system of the present invention. Figure 1 This is the top cover closing state of the top cover opening and closing mechanism of the present invention. Figure 8 This is the top cover opening and closing mechanism of the present invention with the top cover opened.

[0033] The opening and closing mechanism of this embodiment drives the input end shaft of the worm gear drive device 1-3 by manually operating the pointed tail ratchet wrench 4, and drives the driving gear 1-1 to rotate through the output end of the worm gear drive device 1-3. The edge of the sector gear 1-2 is toothed and meshes with the gear. Under the action of the driving gear 1-1, the sector gear 1-2 is limited in rotation by the guide shaft 1-5. When the sector gear 1-2 rotates, it drives the connecting rod 1-4 to rotate. The driven end top cover opening and closing system 2 is connected to the driving gear 1-1 of the active end top cover opening and closing system 1 through the lower transmission device 3. When the driving gear 1-1 of the active end top cover opening and closing system rotates, the lower transmission device 3 is driven by the driving gear 1-1 of the active end opening and closing system, and is driven by the driven gear 3-7 of the lower transmission device 3 and the fan gear 1-2 of the driven end top cover opening and closing system 2. The fan gear 1-2 of the driven end top cover opening and closing system 2 is limited in rotation by the guide shaft 1-5 under the action of the driven gear 3-7 of the lower transmission device 3, and the connecting rod 1-4 is driven to rotate when the fan gear 1-2 rotates.

[0034] The connecting rods 1-4 of the active and passive top cover opening and closing systems 1 and 2 are movably connected to the rotating shafts on either side of the top cover. These rotating shafts are driven by the connecting rods 1-4 of the active and passive top cover opening and closing systems 1 and 2, respectively, to rotate. The top cover rotating shafts drive the top cover to rotate about the rotating arms (rotating shafts) at the top cover edge. The worm gear drive 1-3, by manually operating the pointed-tail ratchet wrench 4 in the forward or reverse direction, can achieve forward and reverse rotation of the drive gear 1-1 at the output end of the worm gear drive 1-3. This change in rotation direction changes the rotation direction of the connecting rods 1-4 connected to the top cover, thereby opening or closing the top cover.

Claims

1. A top cover opening and closing mechanism for an open-top box, wherein the top cover of the open-top box is split longitudinally along the open-top box; the outer sides of the left and right top covers are respectively hinged to the two side walls of the open-top box, and the inner sides of the longitudinal axis of the open-top box are respectively provided with top cover rotation shafts; characterized in that: The ends of the top cover rotating shafts of the left and right top covers are located on the two end walls of the open top box body and are respectively driven and hinged by the left and right top cover driving devices of the same structure and symmetrical arrangement; the top cover driving device is composed of an active end top cover opening and closing system, a driven end top cover opening and closing system and a transmission device; The active end cover opening and closing system includes a worm gear drive device and a drive lever fixedly mounted on the lower side of the end wall of the open-top box body; the worm gear drive device includes: a drive worm, a worm wheel driven by the drive worm, and a drive gear driven by the worm wheel and hingedly mounted on the end wall of the open-top box body; the drive lever includes a connecting rod and a sector gear, one end of the connecting rod is hingedly connected to the top cover rotating shaft, and the other end is fixedly connected to the sector vertex of the sector gear and hingedly mounted on the end wall of the open-top box body; the sector edge of the sector gear is provided with teeth that cooperate with the drive gear; The driven end top cover opening and closing system includes a driving lever with the same system structure as the active end top cover opening and closing system; the transmission device is arranged at the bottom of the open top box body, and includes a transmission shaft arranged longitudinally along the open top box body; the transmission shaft is connected to the driving gear at the active end top cover opening and closing system end, and a driven gear is fixedly arranged at the driven end top cover opening and closing system end to cooperate with the sector gear for driving.

2. The open top box cover opening and closing mechanism according to claim 1, characterized in that: The driving worm of the worm gear drive device is hingedly fixed to the end wall of the open top box through a rotating shaft mounting seat and is symmetrically arranged. The outer end of the driving worm is driven by a pointed tail ratchet wrench.

3. The open top box cover opening and closing mechanism according to claim 1, characterized in that: An arc-shaped guide groove is provided on the inner side of the sector edge of the sector gear. The arc-shaped guide groove is sleeved on a guide shaft fixed to the end wall of the open-top box body and is limited and moved by the guide shaft.

4. The open top box cover opening and closing mechanism according to claim 1, characterized in that: The connecting rod of the driving lever and the vertex connection of the sector gear are hinged to the end wall of the open top box through an axis fixed to the end wall of the open top box. An axis end baffle for limiting the rotation of the driving lever is also fixed on the end wall of the open top box outside the connecting rod and the vertex connection of the sector gear.

5. The open top box cover opening and closing mechanism according to claim 1, characterized in that: The worm wheel and the driving gear of the worm gear drive device are connected through a gear reduction device.

6. The open top box cover opening and closing mechanism according to claim 1, characterized in that: The transmission shaft of the transmission device is a three-section structure that is connected and driven to each other, and is rotatably fixed to the bottom of the open-top box body through an F-type square bearing seat. The transmission shaft includes end shafts at both ends and a middle shaft in the middle, and the end shafts and the two middle shafts are connected by connecting flanges.

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