Lifting workbench with safety protection function

Abstract

The utility model relates to the field of roller conveying line related equipment, in particular to a lifting workbench with a safety protection function. The lifting frame comprises a main frame body and a lifting box body, a plurality of cross beam rods are arranged at the front end and the rear end of the main frame body, so that the front end face and the rear end face of the main frame body are divided into a plurality of opening areas, and a hollow containing cavity is formed in the lifting box body; a mechanical blocking structure is arranged between the lifting box body and the main frame body, wherein the mechanical blocking structure is used for blocking goods on the conveying line when the hollow containing cavity does not right face the opening area. According to the lifting workbench with the safety protection function, goods on a conveying line can be kept in a horizontal state all the time in the process of lifting and moving in the vertical direction, goods products are effectively prevented from overturning or falling off, and the working efficiency is improved. And meanwhile, the belts are connected on the two sides and synchronously drive the lifting box body to ascend, so that the stability of the goods in the ascending process can be further improved.

Description

Technical Field

[0001] The utility model relates to the field of equipment related to roller conveyor lines, in particular to a lifting workbench with a safety protection function. Background Art

[0002] As a technology widely used in the field of pre-warehousing, automated stereoscopic warehouses can achieve high-level rationalization of warehouses, automated access, and simplified operation; the main body of the automated stereoscopic warehouse is composed of shelves, aisle stacking cranes, storage workbenches, automatic transport in and out, roller conveyors, and operation control systems. The roller conveyors are mainly composed of transmission rollers, racks, brackets, drive units, etc., and have the characteristics of large conveying capacity, fast speed, light operation, and can achieve multi-variety co-linear diversion and transportation. In the actual transportation and transportation process of these automated stereoscopic warehouse equipment, not only do they need to move and transport the goods at the same level, but they also often need to lift the goods for stacking or storage. Therefore, when these automated warehouse equipment are working together, some roller conveyor equipment that can also achieve the action of lifting goods has also appeared on the market.

[0003] For example, a roller conveyor for a stereoscopic warehouse system disclosed in the Chinese invention patent application document with application number CN202211523003.4, the equipment includes a hydraulic lifting rod, a driving motor and a hydraulic pump arranged in rows, a support sleeve is fixedly installed on the top of the extended shaft of the hydraulic lifting rod, a roller is movably sleeved inside the support sleeve, a support frame is movably sleeved on the top of the hydraulic lifting rod, the front and rear ends of the support frame are movably sleeved with the front and rear ends of the roller respectively, a power transmission roller is movably sleeved in front of the hydraulic lifting rod, two transmission gears are fixedly sleeved on the power transmission roller, and a transmission chain is movably connected to the transmission gear. Through the arrangement of the hydraulic lifting rod and the roller, the hydraulic lifting rod can effectively control the height of the roller. When the height of a roller changes, the height of the roller can be quickly adjusted by the hydraulic lifting rod, thereby ensuring the smooth transportation and passage of goods.

[0004] However, the applicant discovered that in roller conveyor equipment similar to the above-mentioned structure, since a hydraulic lifting rod is required to lift one end of the support frame on which the roller is installed during the lifting process, the goods will be in a tilted state on this part of the roller. Such a lifting and conveying method with a large tilt angle is easy to cause damage or slippage to some fragile products, such as glass plates or photovoltaic panels; and for some goods with liquids stored inside, it is obvious that such a lifting and conveying method is also easy to cause the liquid to shake, or even cause the product to flip and overturn. In addition, if the goods need to be lifted higher, then the length of the lifting frame needs to be made longer or a larger lifting angle needs to be set, which will bring about the problem of increased equipment size or reduced adhesion of the rollers.

[0005] In view of the above problems, the utility model provides a lifting workbench with safety protection function, which can always keep the horizontal stability of goods during the process of moving, conveying and lifting goods, thereby avoiding damage to the goods and ensuring high conveying efficiency. Utility Model Content

[0006] The utility model provides a lifting workbench with a safety protection function which can always keep the level stability of goods during the process of moving, conveying and lifting goods, thereby avoiding damage to the goods and ensuring high conveying efficiency.

[0007] The above technical objectives of the utility model are achieved through the following technical solutions:

[0008] A lifting workbench with a safety protection function comprises a hollow main frame body and a lifting box body arranged inside the main frame body, wherein the front and rear ends of the main frame body are provided with a plurality of cross beams, thereby dividing the front and rear end surfaces of the main frame body into a plurality of opening areas for connecting with a conveyor line and allowing goods to pass through, and the interior of the lifting box body is also provided with a hollow receiving cavity for placing goods, and the hollow receiving cavity runs through the front and rear end surfaces of the lifting box body so that goods can enter the interior of the hollow receiving cavity or leave the hollow receiving cavity; the lifting box body can be driven by a driving device to perform lifting and lowering movements in the vertical direction inside the main frame body, and make the hollow receiving cavity connect with each of the opening areas, and a mechanical barrier structure is provided between the lifting box body and the main frame body for blocking the goods on the conveyor line when the hollow receiving cavity is not directly opposite to the opening area.

[0009] As a preferred embodiment of the utility model, a driving connecting rod is also provided on the top of the main frame body, and two transmission belts are installed on the driving connecting rod which are respectively connected to the two sides of the lifting box body. The driving connecting rod can perform forward or reverse rotational motion under the drive of the driving device, thereby driving the lifting box body to realize lifting or lowering action.

[0010] As a preferred embodiment of the utility model, a counterweight module capable of being lifted and moved in a vertical direction is also provided on the main frame body; the transmission belt is installed around the driving connecting rod, and the two ends of the transmission belt are respectively fixedly connected to the counterweight module and the lifting box body.

[0011] As a preferred embodiment of the present invention, a plurality of supporting rollers are movably installed inside the lifting box body and can freely rotate around a central axis extending in left and right horizontal directions.

[0012] As a preferred embodiment of the present invention, the mechanical blocking structure includes a blocking plate movably mounted on the front end surface of the lifting box body and a driving guide plate fixedly mounted on the crossbeam, the blocking plate is provided with a blocking portion for blocking and limiting the goods on the conveyor line and an abutment driving portion for driving the blocking plate to rotate, the abutment driving portion can abut against the outer contour line of the driving guide plate, and as the lifting box body moves up and down, the abutment driving portion can move along the outer contour line of the driving guide plate while driving the blocking portion to switch between an upward protruding or horizontal state.

[0013] As a preferred embodiment of the present invention, a reset tension spring is further connected between the blocking plate and the lifting box body, for keeping the blocking plate rotating to a state in which the blocking portion protrudes upward when the hollow receiving cavity and the opening area are not directly facing each other.

[0014] As a preferred embodiment of the present invention, the mechanical barrier structure is provided on each of the crossbeams.

[0015] As a preferred embodiment of the present invention, a rotary roller is provided on the abutting driving portion for reducing the wear between the abutting driving portion and the driving guide plate.

[0016] In summary, the utility model can achieve the following beneficial effects:

[0017] The lifting workbench with safety protection provided in the scheme of the utility model can realize the process of lifting and moving the goods on the conveyor line in the vertical direction, always keeping the goods in a horizontal state, effectively preventing the goods from tipping over or falling off, and at the same time, because the belt is connected on both sides and synchronously drives the lifting movement of the lifting box, the stability of the goods during the lifting process can be further improved. In addition, in this scheme, a mechanical blocking mechanism is installed on the lifting box, which does not require an external independent power drive, but only relies on the lifting action of the box to control the opening and closing movement. This mechanism can effectively ensure that during the lifting and moving process, the goods can be stably confined inside the lifting box, and even in the special case that the photoelectric control system fails or malfunctions, it can also be blocked by the mechanical blocking mechanism to ensure that the goods will not separate and fall out. Such a structure can not only effectively protect the goods inside the box, but also greatly improve the operating safety of the surrounding staff during the operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structural layout of the lifting workbench with safety protection function;

[0019] Figure 2 It is a schematic diagram of the enlarged structure of the upper part of the lifting work platform with safety protection function;

[0020] Figure 3 It is a schematic diagram of the enlarged structure of the lower part of the lifting workbench with safety protection function;

[0021] Figure 4 It is a schematic diagram of the structure in which the blocking plate in the mechanical blocking structure is in an upright state;

[0022] Figure 5 It is a schematic diagram of the structure in which the blocking plate in the mechanical blocking structure is in a horizontal state.

[0023] In the figure:

[0024] 1——main frame, 101——crossbeam, 102——opening area;

[0025] 2——lifting box, 201——hollow receiving cavity, 202——supporting roller;

[0026] 3 – driving device;

[0027] 4 – driving connecting rod;

[0028] 5——Transmission belt;

[0029] 6——Counterweight module;

[0030] 7——mechanical blocking structure, 701——blocking plate, 7011——blocking part, 7012——abutting driving part, 7013——rotating roller, 702——reset tension spring, 703——driving guide plate. DETAILED DESCRIPTION

[0031] The following specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0032] This solution is achieved through the following technical means:

[0033] Embodiment: In this embodiment, a lifting work platform with safety protection function is provided, which can always keep the horizontal stability of goods during the process of moving, conveying and lifting goods, thereby avoiding damage to the goods and ensuring high conveying efficiency.

[0034] Specifically, the lifting workbench with safety protection provided in the present solution mainly includes a hollow main frame body 1 formed by connecting metal rods by welding, and a lifting box body 2 movably installed inside the main frame body 1. The front and rear ends of the main frame body 1 are provided with horizontally placed crossbeams 101, and the crossbeams 101 have the same spacing size, so that the front and rear end surfaces of the main frame body 1 are divided into a plurality of opening areas 102 at different heights for connecting with the conveyor line and allowing goods to pass through. Inside the main frame body 1, a lifting box body 2 with an overall rectangular appearance is installed, and the interior of the lifting box body 2 is hollow and the front and rear ends are connected, so that a hollow receiving chamber 201 is also formed inside the box body. At the same time, in order to facilitate the goods and products on the conveyor line to enter the interior of the box body, a plurality of supporting rollers 202 that can freely rotate around the central axis extending in the horizontal direction can also be installed inside the lifting box body 2. At this time, when the goods on the conveyor line are pushed into the hollow receiving cavity 201 by the conveyor belt, as the supporting roller 202 rotates freely, the friction contact effect on the goods when entering will be greatly reduced, so that the goods can be more easily delivered into the box or pushed out of the box.

[0035] After the cargo products are transported and placed inside the box, the lifting box 2 containing the cargo products can be lifted and moved inside the aforementioned main frame body 1 under the drive of a driving device 3, such as a stepping motor, so that the front and rear end openings on the lifting box 2 are respectively connected with the opening areas 102 formed on the main frame body 1 and located at different heights. At this time, the cargo can be lifted to different heights and transferred to a position higher than the initial conveyor line.

[0036] During the lifting or lowering process, the inventors considered that the lateral span of the lifting box 2 would be made relatively large to facilitate the entry of wider goods into the box, which would cause the box to have a reduced balance on both sides during the lifting process. At this time, it is easy for the lifting box 2 to swing to both sides, which in turn causes the goods and products supported inside the box to shake, or even slide out. In order to solve this problem, a structural layout for solving the above-mentioned problem is provided in the present application scheme. Specifically, the lifting workbench with a safety protection function provided in the present embodiment is also provided with a driving connecting rod 4 in the front-to-back direction at the top of the main frame body 1, and two transmission belts 5 are installed on the driving connecting rod 4, which are respectively connected to the two sides of the lifting box 2. The driving connecting rod 4 can perform forward or reverse rotational motion under the drive of the stepping motor of the aforementioned seat drive device 3, thereby driving the lifting box 2 to achieve lifting or lowering action. At this time, since both sides of the lifting box 2 are synchronously stressed and driven to lift upward, the problem of height imbalance on both sides of the box during the continuous operation of the equipment can be greatly reduced, making the lifting movement of the goods more stable and reliable. Figure 2 The structural layout of the top of the given device can also be provided with multiple sets of transmission belts 5 respectively connected to both sides of the lifting box 2 along the axial direction of the driving connecting rod 4, so as to further improve the stability during the lifting and moving process.

[0037] As a preferred structure, a counterweight module 6 capable of being lifted and moved in the vertical direction may be further provided on the main frame body 1; the transmission belt 5 is installed around the driving connecting rod 4, and the two ends of the transmission belt 5 are respectively fixedly connected to the counterweight module 6 and the lifting box body 2. At this time, since the counterweight module 6 has a balancing effect on the lifting box body 2 and the goods and products supported therein on one side, the driving motor can work under a smaller load, and the lifting and conveying action of the goods can be realized more flexibly and conveniently.

[0038] Furthermore, the inventors consider that after the goods enter the interior of the lifting box 2, the goods are prone to slip out of the aforementioned hollow receiving chamber 201 due to inertia or vibration. Of course, the internal rollers can be locked and stopped to prevent the goods from sliding out from the inside to the outside, but if a pallet or other relatively smooth supporting structure is provided at the bottom of the goods themselves, it is still easy to slide out, especially when the goods are lifted to a higher position. At this time, the fall of the goods is not only easy to cause damage to the equipment, but also poses a risk of injury to the surrounding staff. Therefore, as a further preferred structure, a mechanical barrier structure 7 is also provided between the lifting box 2 and the aforementioned crossbeam 101.

[0039] Specifically, the structure includes two parts: a blocking plate 701 movably mounted on the front end surface of the lifting box 2 and a driving guide plate 703 fixedly mounted on the crossbeam 101. Figure 4 The schematic diagram of the structure of this part is given, wherein the blocking plate 701 is formed with a blocking portion 7011 for blocking and limiting the goods on the conveyor line and an abutting driving portion 7012 for driving the blocking plate 701 to rotate, the abutting driving portion 7012 can abut against the outer contour line of the driving guide plate 703, and a reset spring 702 is also connected between the blocking plate 701 and the lifting box 2. In the initial state, the front and rear end openings of the lifting box 2 are not in a state where the hollow receiving cavity 201 is directly opposite to the opening area 102, and the abutting driving portion 7012 is not in contact with the driving guide plate 703. Then, under the pulling action of the reset spring, the blocking plate 701 is in an upright state with the blocking portion 7011 protruding upward. At this time, the external goods cannot be pushed into the lifting box 2. As the lifting box 2 is lifted or lowered, the contact driving part 7012 will enter a state of contact with the driving guide plate 703. As the box continues to move, the driving contact part will rotate along the outer contour of the driving guide plate 703. When the lifting box 2 moves to a state where the hollow receiving cavity 201 is directly opposite to the opening area 102, the blocking plate 701 will rotate to a horizontal state. At this time, the aforementioned blocking part 7011 is no longer in an upright state protruding upward, so the goods can freely enter the hollow receiving cavity 201 from the conveyor line or leave the hollow receiving cavity 201 and move to the conveyor line. As the lifting box 2 continues to move, the blocking plate 701 will re-enter the upright state under the action of the reset spring, playing a role in blocking and dividing the goods.

[0040] Of course, in order to reduce the wear between the abutting driving part 7012 and the driving guide plate 703 , a rotating roller 7013 for reducing the wear between the abutting driving part 7012 and the driving guide plate 703 may be provided on the abutting driving part 7012 .

[0041] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A lifting workbench with safety protection function, characterized in that: The invention comprises a hollow main frame body (1) and a lifting box body (2) arranged inside the main frame body (1); the front and rear ends of the main frame body (1) are provided with a plurality of crossbeams (101), so that the front and rear ends of the main frame body (1) are divided into a plurality of opening areas (102) for connecting with a conveyor line and allowing goods to pass through; the interior of the lifting box body (2) is also provided with a hollow receiving cavity (201) for placing goods; the hollow receiving cavity (201) passes through the front and rear ends of the lifting box body (2) so that goods can enter the hollow receiving cavity. The lifting box (2) can be driven by the driving device (3) to perform lifting movement in the vertical direction inside the main frame (1), so that the hollow receiving cavity (201) is connected to each of the opening areas (102); a mechanical barrier structure (7) is provided between the lifting box (2) and the main frame (1) for blocking the goods on the conveyor line when the hollow receiving cavity (201) is not directly opposite to the opening area (102).

2. The lifting work platform with safety protection function according to claim 1 is characterized in that: A driving connecting rod (4) is also provided on the top of the main frame body (1), and two transmission belts (5) are installed on the driving connecting rod (4) and are respectively connected to the two sides of the lifting box body (2). The driving connecting rod (4) can perform forward or reverse rotational movement under the drive of the driving device (3), thereby driving the lifting box body (2) to achieve lifting or lowering action.

3. The lifting work platform with safety protection function according to claim 2 is characterized in that: A counterweight module (6) capable of being lifted and moved in a vertical direction is also provided on the main frame body (1); the transmission belt (5) is installed around the driving connecting rod (4), and the two ends of the transmission belt (5) are respectively fixedly connected to the counterweight module (6) and the lifting box body (2).

4. The lifting work platform with safety protection function according to claim 3 is characterized in that: A plurality of supporting rollers (202) are movably installed inside the lifting box (2) and are capable of freely rotating around a central axis extending in the left and right horizontal directions.

5. The lifting work platform with safety protection function according to claim 4 is characterized in that: The mechanical blocking structure (7) comprises a blocking plate (701) movably mounted on the front end surface of the lifting box (2) and a driving guide plate (703) fixedly mounted on the crossbeam (101); the blocking plate (701) is provided with a blocking portion (7011) for blocking and limiting the goods on the conveyor line and an abutting driving portion (7012) for driving the blocking plate (701) to rotate; the abutting driving portion (7012) can abut against the outer contour line of the driving guide plate (703); as the lifting box (2) moves up and down, the abutting driving portion (7012) can move along the outer contour line of the driving guide plate (703) and drive the blocking portion (7011) to switch between an upward protruding state or a horizontal state.

6. The lifting work platform with safety protection function according to claim 5 is characterized in that: A return tension spring (702) is also connected between the blocking plate (701) and the lifting box (2) for keeping the blocking plate (701) rotated to a state where the blocking portion (7011) protrudes upward when the hollow receiving cavity (201) and the opening area (102) are not aligned.

7. The lifting work platform with safety protection function according to claim 6 is characterized in that: The mechanical barrier structure (7) is arranged on each of the crossbeams (101).

8. The lifting work platform with safety protection function according to claim 5 is characterized in that: The abutting driving portion (7012) is provided with a rotating roller (7013) for reducing the wear between the abutting driving portion (7012) and the driving guide plate (703).

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