Lifting speed limiting device of logistics stacking machine

Abstract

The lifting speed limiting device comprises a speed limiting assembly and an anti-falling assembly, the speed limiting assembly comprises a top plate and a bottom plate, stand columns are fixedly connected to the two sides of the bottom of the top plate, the top of the bottom plate is fixedly connected with the stand columns, and first motors are fixedly connected to the tops of inner cavities of the stand columns; the bottom of the output end of the first motor is fixedly connected with a screw, the surface of the screw is sleeved with a threaded sleeve, a lifting platform is arranged between the two stand columns, and the two sides of the lifting platform penetrate through the stand columns and are fixedly connected with the threaded sleeve. The lifting platform has the advantages that the falling speed of the lifting platform can be reduced through the speed limiting assembly when the first motor breaks down, damage caused by rapid falling of the lifting platform is prevented, the screw can stop rotating through the anti-falling assembly, the lifting platform is prevented from continuously falling and staying at the current position, and the safety of the lifting platform is improved. And the lifting platform is prevented from being damaged due to continuous falling.

Description

Technical Field

[0001] The utility model belongs to the technical field of tobacco logistics, and in particular relates to a lifting speed limiting device for a logistics stacker. Background Art

[0002] Currently, in the tobacco logistics process, tobacco can be transported to high-rise shelves by stackers. However, during the use of stackers, speed limiting devices are required to prevent the lifting platform from falling rapidly when the stacker fails.

[0003] However, the lifting speed limiting devices of logistics stackers in the prior art mostly slow down the descending speed of the lifting platform through program (PLC) limitations and friction. This method cannot stop the lifting platform immediately when there are goods above the lifting platform, but can only reduce its falling speed. The lifting platform will continue to move downward, causing the lifting platform and the goods to fall, causing a dangerous situation for the stacker, which is not conducive to its safe use.

[0004] Therefore, in order to ensure the safety of the stacker and the goods it carries, it is urgent to design a logistics stacker lifting speed limiting device. Summary of the invention

[0005] In order to solve the above-mentioned technical problems existing in the prior art, the utility model provides a logistics stacker lifting speed limiting device, which solves the problem that the existing logistics stacker lifting speed limiting device can only reduce the falling speed but cannot immediately stop the operation, which easily causes the lifting platform and cargo to fall, causing the stacker to be dangerous.

[0006] The technical problems adopted by the utility model are:

[0007] A logistics stacker lifting speed limiting device, characterized in that it comprises a speed limiting component (1) and an anti-falling component (2), wherein:

[0008] The speed limiting component (1) comprises a top plate (101) and a bottom plate (102), wherein the length direction of the top plate (101) or the bottom plate (102) is defined as the left-right direction, and the width direction of the top plate (101) or the bottom plate (102) is defined as the front-back direction; a column (103) is provided on each side between the top plate (101) and the bottom plate (102), and the upper and lower ends of the column (103) are respectively fixedly connected to the bottom of the top plate (101) and the top of the bottom plate (102); the top of the inner cavity of the column (103) is fixedly connected to the A first motor (104) is connected, the output end of the first motor (104) is fixedly connected with a screw rod (105), the top of the screw rod (105) is drivingly connected to the output end of the first motor (104), and the bottom of the screw rod (105) is movably connected to the inner wall of the column (103); a threaded sleeve (106) is sleeved on the surface of the screw rod (105), and a lifting platform (107) is arranged between the two columns (103), and the two ends of the lifting platform (107) respectively penetrate the columns (103) and are connected to the screw rod. The threaded sleeve (106) is fixedly connected, and control boxes (108) are fixedly connected to both sides of the bottom of the lifting platform (107); two cylinders (110) are fixedly connected to the inner wall of the inner cavity of the two control boxes (108) on the side away from the column, and the driving ends of the two cylinders (110) are provided with movable plates (109), and the movable plates (109) can move in the left and right directions under the drive of the cylinders (110); the movable plates (109) are symmetrically provided at the positions corresponding to the cylinder driving ends on the side away from the cylinders (110). A trapezoidal block (111), a push wheel (112) is provided on one side of the two trapezoidal blocks (111) away from the movable plate (109), a control rod (113) is fixedly connected to the push wheel (112), the two control rods (113) on one side away from the movable plate (109) penetrate through the inner cavity of the column (103) and are fixedly connected to a clamping block (114), the opposite side of the clamping block (114) has a clamping groove for clamping the column (103); a spring (115) is fixedly connected between the two control rods (113);

[0009] Two anti-falling components (2) are provided, and are respectively provided on the outsides of the two upright posts (103); the anti-falling components (2) include a fixed shell (201), and opposite sides of the two fixed shells (201) both penetrate into the inner cavity of the upright post (103); a second motor (202) is fixedly installed at the bottom of the inner cavity of the fixed shell (201); an output end of the second motor (202) is fixedly connected to a cam (203), and the cam (203) is close to the screw. A toothed plate (204) is provided on one side of the screw (105); a tension spring (205) is fixedly connected to the side of the toothed plate (204) away from the cam (203); one end of the tension spring (205) is fixed on the toothed plate (204), and the other end is fixed on the inner wall of the inner cavity of the fixed shell (201); a gear (206) is provided on the surface of the screw rod (105) at a position corresponding to the toothed plate (204), and the gear (206) is meshed with the toothed plate (204).

[0010] Furthermore, the cross section of the trapezoidal block (111) is a right-angled trapezoid, the two right-angled sides of the right-angled trapezoid are respectively fixed on the movable plate (109), and the inclined surface of the right-angled trapezoid faces the push wheel (112). When the push wheel (112) moves from bottom to top, the clamping grooves on the two clamping blocks (114) approach each other to achieve clamping of the screw rod (105).

[0011] Furthermore, the bottom of the screw rod (105) is movably connected to the inner wall of the column (103) via a bearing.

[0012] Furthermore, movable openings for allowing the lifting platform (107) to move up and down are provided on opposite sides of the two uprights (103).

[0013] Furthermore, a slide bar is fixedly connected between the front and rear sides of the inner cavity of the control box (108), and a slide sleeve is sleeved on the front and rear sides of the surface of the slide bar, and the bottom of the slide sleeve is fixedly connected to the control rod (113).

[0014] Furthermore, the positions of the anti-falling components (2) on the opposite sides of the two uprights (103) are both provided with positioning openings for use with the fixing shell (201).

[0015] Furthermore, the front and rear sides of the tooth plate (204) are fixedly connected to limit blocks, and the front and rear sides of the inner cavity of the fixed shell (201) are provided with limit grooves used in conjunction with the limit blocks.

[0016] Furthermore, a maintenance baffle is provided on the front side of the control box (108), and the top and bottom of the rear side of the maintenance baffle are fixedly connected to the control box (108) by bolts.

[0017] Furthermore, guide wheels (3) are fixedly connected to both sides of the top of the top plate (101), and walking wheels (4) are fixedly connected to both sides of the bottom of the bottom plate (102).

[0018] Furthermore, a placement slot for use with a control box (108) is provided on the top of the base plate (102), and a controller is fixedly connected to the bottom of the front side of the column (103).

[0019] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0020] 1. The utility model can reduce the falling speed of the lifting platform through the speed limiting component when the first motor fails, thereby preventing it from falling quickly and causing damage.

[0021] 2. The utility model can stop the rotation of the screw rod through the anti-fall component, prevent the lifting platform from continuing to fall, and make it stay at the current position to prevent it from continuing to fall and causing damage to the lifting platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the utility model;

[0023] Figure 2 It is a cross-sectional view of a column of the utility model;

[0024] Figure 3 It is a side sectional view of the control box of the utility model;

[0025] Figure 4 It is a cross-sectional view of the fixed shell of the utility model.

[0026] In the figure: 1. speed limiting component; 101. top plate; 102. bottom plate; 103. column; 104. first motor; 105. screw; 106. threaded sleeve; 107. lifting platform; 108. control box; 109. movable plate; 110. cylinder; 111. trapezoidal block; 112. push wheel; 113. control rod; 114. clamping block; 115. spring; 2. anti-falling component; 201. fixed shell; 202. second motor; 203. cam; 204. tooth plate; 205. tension spring; 206. gear; 3. guide wheel; 4. walking wheel. DETAILED DESCRIPTION

[0027] The specific implementation of the embodiment of the utility model is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the utility model, and is not used to limit the embodiment of the utility model.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in combination with exemplary embodiments.

[0030] refer to Figures 1 to 4 The utility model provides a lifting speed limiting device for a logistics stacker, comprising a speed limiting component 1 and an anti-falling component 2, wherein:

[0031] The speed limiting component 1 includes a top plate 101 and a bottom plate 102, and the length direction of the top plate 101 or the bottom plate 102 is defined as the left-right direction, and the width direction of the top plate 101 or the bottom plate 102 is defined as the front-back direction; a column 103 is provided on each side between the top plate 101 and the bottom plate 102, and the upper and lower ends of the column 103 are respectively fixedly connected to the bottom of the top plate 101 and the top of the bottom plate 102; a first motor 104 is fixedly connected to the top of the inner cavity of the column 103, and a screw 105 is fixedly connected to the output end of the first motor 104, and the top of the screw 105 is transmission-connected to the output end of the first motor 104, and the bottom of the screw 105 is movably connected to the inner wall of the column 103; a threaded sleeve 106 is sleeved on the surface of the screw 105, and a lifting platform 107 is provided between the two columns 103, and the two ends of the lifting platform 107 respectively penetrate the columns 103 and are connected to the threaded sleeve 106 is fixedly connected, and both sides of the bottom of the lifting platform 107 are fixedly connected with a control box 108; two cylinders 110 are fixedly connected to the inner wall of the inner cavity of the two control boxes 108 away from the column, and the driving ends of the two cylinders 110 are provided with a movable plate 109, and the movable plate 109 can move in the left and right directions under the drive of the cylinder 110; a trapezoidal block 111 is symmetrically provided at the position corresponding to the cylinder driving end on the side of the movable plate 109 away from the cylinder 110, and a push wheel 112 is provided on the side of the two trapezoidal blocks 111 away from the movable plate 109, and a control rod 113 is fixedly connected to the push wheel 112, and the two control rods 113 are fixedly connected to a clamping block 114 after the side away from the movable plate 109 passes through the inner cavity of the column 103, and the opposite side of the clamping block 114 has a clamping groove for clamping the column 103; a spring 115 is fixedly connected between the two control rods 113;

[0032] There are two anti-falling components 2, which are respectively arranged on the outside of the two columns 103; the anti-falling component 2 includes a fixed shell 201, and the opposite sides of the two fixed shells 201 are both penetrated into the inner cavity of the column 103, and a second motor 202 is fixedly installed at the bottom of the inner cavity of the fixed shell 201, and the output end of the second motor 202 is fixedly connected with a cam 203, and a tooth plate 204 is arranged on the side of the cam 203 close to the screw 105, and a tension spring 205 is fixedly connected on the side of the tooth plate 204 away from the cam 203, one end of the tension spring 205 is fixed on the tooth plate 204, and the other end is fixed on the inner wall of the inner cavity of the fixed shell 201; a gear 206 is arranged on the surface of the screw 105 corresponding to the position of the tooth plate 204, and the gear 206 is meshed with the tooth plate 204.

[0033] Specifically: the speed limiting component 1 can reduce the falling speed of the lifting platform 107 when the first motor 104 fails to prevent it from falling quickly and causing damage. The anti-fall component 2 can stop the screw 105 from rotating to prevent the lifting platform 107 from continuing to fall, so that it stays at the current position and prevents it from continuing to fall and causing damage to the lifting platform 107.

[0034] In one embodiment, the cross-section of the trapezoidal block 111 is a right-angled trapezoid, and the two right-angled sides of the right-angled trapezoid are respectively fixed on the movable plate 109. The inclined surface of the right-angled trapezoid faces the push wheel 112. When the push wheel 112 moves from bottom to top, the clamping grooves on the two clamping blocks 114 approach each other to clamp the screw 105.

[0035] In one embodiment, the bottom of the screw rod 105 is movably connected to the inner wall of the column 103 via a bearing.

[0036] In one embodiment, movable openings for allowing the lifting platform 107 to move up and down are formed on opposite sides of the two uprights 103 .

[0037] Specifically: the bearing can improve the stability of the screw 105 during rotation, and the movable opening can facilitate the lifting platform 107 to move up and down smoothly.

[0038] In one embodiment, a slide bar is fixedly connected between the front and rear sides of the inner cavity of the control box 108 , and a slide sleeve is sleeved on the front and rear sides of the slide bar surface, and the bottom of the slide sleeve is fixedly connected to the control rod 113 .

[0039] Specifically: the sliding rod and the sliding sleeve can improve the stability of the control rod 113 during the movement, so that the control rod 113 can move forward and backward smoothly.

[0040] In one embodiment, positioning openings for use with the fixing shell 201 are provided at positions corresponding to the anti-fall assembly 2 on opposite sides of the two uprights 103 .

[0041] Specifically, the tooth plate 204 can be reset by the tension spring 205 , and the tooth plate 204 can be conveniently moved to the inner cavity of the column 103 by the positioning opening.

[0042] In one embodiment, the front and rear sides of the tooth plate 204 are fixedly connected to limit blocks, and the front and rear sides of the inner cavity of the fixed shell 201 are provided with limit grooves used in conjunction with the limit blocks.

[0043] Specifically: the moving position of the tooth plate 204 can be controlled by the limiting block and the limiting groove, so that it can move left and right stably.

[0044] In one embodiment, a maintenance baffle is provided on the front side of the control box 108, and the top and bottom of the rear side of the maintenance baffle are fixedly connected to the control box 108 by bolts.

[0045] Specifically: the maintenance baffle can facilitate the staff to maintain and repair the components in the control box 108.

[0046] In one embodiment, guide wheels 3 are fixedly connected to both sides of the top of the top plate 101 , and walking wheels 4 are fixedly connected to both sides of the bottom of the bottom plate 102 .

[0047] Specifically: the guide wheels 3 and the travel wheels 4 can facilitate the displacement of the entire device.

[0048] In one embodiment, a placement slot for use with a control box 108 is provided on the top of the base plate 102 , and a controller is fixedly connected to the bottom of the front side of the column 103 .

[0049] Specifically: the control box 108 can be conveniently moved to the bottom of the base plate 102 through the placement slot, and the entire device can be controlled through the controller.

[0050] The working principle of the utility model is: when the first motor 104 fails and causes the lifting platform 107 to fall, the cylinder 110 is started, the cylinder 110 drives the movable plate 109 and the trapezoidal block 111 to move, the trapezoidal block 111 moves to squeeze the push wheel 112, and the push wheel 112 drives the control rod 113 and the clamping block 114 to move after being squeezed, the clamping block 114 moves to clamp the screw 105, and the falling speed of the lifting platform 107 is reduced by friction. When the falling speed of the lifting platform 107 is reduced, the second motor 202 is turned on, and the second motor 202 cooperates with the cam 203 to drive the tooth plate 204 to move, and the tooth plate 204 moves to mesh with the gear 206. The meshing of the tooth plate 204 and the gear 206 prevents the screw 105 from continuing to rotate, so that the lifting platform 107 stays at the current position to prevent it from continuing to fall and causing damage.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0056] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A lifting speed limiting device for a logistics stacker, characterized in that: It comprises a speed limiting component (1) and a fall prevention component (2), wherein: The speed limiting component (1) comprises a top plate (101) and a bottom plate (102), wherein the length direction of the top plate (101) or the bottom plate (102) is defined as the left-right direction, and the width direction of the top plate (101) or the bottom plate (102) is defined as the front-back direction; a column (103) is provided on each side between the top plate (101) and the bottom plate (102), and the upper and lower ends of the column (103) are respectively fixedly connected to the bottom of the top plate (101) and the top of the bottom plate (102); the top of the inner cavity of the column (103) is fixedly connected to the A first motor (104) is connected, the output end of the first motor (104) is fixedly connected with a screw rod (105), the top of the screw rod (105) is drivingly connected to the output end of the first motor (104), and the bottom of the screw rod (105) is movably connected to the inner wall of the column (103); a threaded sleeve (106) is sleeved on the surface of the screw rod (105), and a lifting platform (107) is arranged between the two columns (103), and the two ends of the lifting platform (107) respectively penetrate the columns (103) and are connected to the screw rod. The threaded sleeve (106) is fixedly connected, and control boxes (108) are fixedly connected to both sides of the bottom of the lifting platform (107); two cylinders (110) are fixedly connected to the inner wall of the inner cavity of the two control boxes (108) on the side away from the column, and the driving ends of the two cylinders (110) are provided with movable plates (109), and the movable plates (109) can move in the left and right directions under the drive of the cylinders (110); the movable plates (109) are symmetrically provided at the positions corresponding to the cylinder driving ends on the side away from the cylinders (110). A trapezoidal block (111), a push wheel (112) is provided on one side of the two trapezoidal blocks (111) away from the movable plate (109), a control rod (113) is fixedly connected to the push wheel (112), the two control rods (113) on one side away from the movable plate (109) penetrate through the inner cavity of the column (103) and are fixedly connected to a clamping block (114), the opposite side of the clamping block (114) has a clamping groove for clamping the column (103); a spring (115) is fixedly connected between the two control rods (113); Two anti-falling components (2) are provided, and are respectively provided on the outsides of the two upright posts (103); the anti-falling components (2) include a fixed shell (201), and opposite sides of the two fixed shells (201) both penetrate into the inner cavity of the upright post (103); a second motor (202) is fixedly installed at the bottom of the inner cavity of the fixed shell (201); an output end of the second motor (202) is fixedly connected to a cam (203), and the cam (203) is close to the screw. A toothed plate (204) is provided on one side of the screw (105); a tension spring (205) is fixedly connected to the side of the toothed plate (204) away from the cam (203); one end of the tension spring (205) is fixed on the toothed plate (204), and the other end is fixed on the inner wall of the inner cavity of the fixed shell (201); a gear (206) is provided on the surface of the screw rod (105) at a position corresponding to the toothed plate (204), and the gear (206) is meshed with the toothed plate (204).

2. A logistics stacker lifting speed limiting device according to claim 1, characterized in that: The cross section of the trapezoidal block (111) is a right-angled trapezoid, the two right-angled sides of the right-angled trapezoid are respectively fixed on the movable plate (109), and the inclined surface of the right-angled trapezoid faces the push wheel (112). When the push wheel (112) moves from bottom to top, the clamping grooves on the two clamping blocks (114) approach each other to achieve clamping of the screw rod (105).

3. The lifting speed limiting device for a logistics stacker according to claim 1 is characterized in that: The bottom of the screw rod (105) is movably connected to the inner wall of the column (103) via a bearing.

4. The lifting speed limiting device for a logistics stacker according to claim 1 is characterized in that: The two opposite sides of the two uprights (103) are each provided with a movable opening for allowing the lifting platform (107) to move up and down.

5. The lifting speed limiting device for a logistics stacker according to claim 1 is characterized in that: A sliding rod is fixedly connected between the front and rear sides of the inner cavity of the control box (108), and sliding sleeves are sleeved on the front and rear sides of the surface of the sliding rod, and the bottom of the sliding sleeve is fixedly connected to the control rod (113).

6. The lifting speed limiting device for a logistics stacker according to claim 1 is characterized in that: Positioning openings for use with the fixing shell (201) are provided at positions corresponding to the anti-falling assembly (2) on opposite sides of the two uprights (103).

7. The lifting speed limiting device for a logistics stacker according to claim 1 is characterized in that: The front and rear sides of the tooth plate (204) are both fixedly connected to the limiting blocks, and the front and rear sides of the inner cavity of the fixed shell (201) are both provided with limiting grooves used in conjunction with the limiting blocks.

8. The lifting speed limiting device for a logistics stacker according to claim 1 is characterized in that: A maintenance baffle is provided on the front side of the control box (108), and the top and bottom of the rear side of the maintenance baffle are fixedly connected to the control box (108) by bolts.

9. The lifting speed limiting device for a logistics stacker according to claim 1 is characterized in that: Both sides of the top of the top plate (101) are fixedly connected with guide wheels (3), and both sides of the bottom of the bottom plate (102) are fixedly connected with walking wheels (4).

10. The lifting speed limiting device for a logistics stacker according to claim 1 is characterized in that: The top of the bottom plate (102) is provided with a placement slot for use with a control box (108), and the bottom of the front side of the column (103) is fixedly connected with a controller.

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