Barrier device for a lifting conveyor
By employing a combination structure of blocking and traction components on the lifting and conveying equipment, and utilizing the movement of the lifting platform to automatically switch the position of the blocking components, the problems of complex structure and high operating costs of existing devices are solved, and simplified automated blocking control is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- UNIVERSAL CIRCUIT BOARD EQUIP CO LTD
- Filing Date
- 2023-04-21
- Publication Date
- 2026-06-09
AI Technical Summary
Existing blocking devices for lifting and conveying equipment have complex structures and high operating costs, requiring drive components and sensing components to control the blocking and release of the blocking device.
The system employs a combination of blocking and traction components. The position of the blocking component is automatically switched by the lifting motion of the lifting platform. Through the cooperation of the traction and elastic components, the blocking component automatically avoids obstacles when the lifting platform is raised and automatically resumes blocking when it is lowered, thus simplifying the structure and operation.
It achieves automated switching of the blocking device, eliminating the need for additional drive and sensing components, resulting in a simple structure, easy operation, and reduced costs.
Smart Images
Figure CN116395376B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of lifting and conveying technology, and in particular to a blocking device for lifting and conveying equipment. Background Technology
[0002] Lifting and conveying equipment typically has a fixed base and a lifting platform that can be raised and lowered relative to the fixed base, such as a board handling machine. When the board is on the lifting platform but the platform is not raised, a blocking device is needed to limit the board's position on the platform to prevent it from detaching and interfering with other components during platform movement. Once the platform is raised and its conveying surface is flush with other conveying surfaces, the blocking device needs to be released to allow the board to smoothly enter the conveying surface of other devices. Therefore, existing blocking devices typically include a drive component and a sensing component. The sensing component detects whether the platform is in position, and the drive component controls the blocking device to either stop or release the board. This results in complex structures and operations, and high costs. Summary of the Invention
[0003] The main objective of this invention is to provide a blocking device for lifting and conveying equipment, which aims to solve the problems of complex structure and operation of existing blocking devices for lifting and conveying equipment.
[0004] To achieve the above objectives, the present invention proposes a blocking device for a lifting and conveying equipment, the lifting and conveying equipment having a fixed base and a lifting platform that can be lifted and moved relative to the fixed base, the blocking device comprising:
[0005] The blocking component is rotatably mounted on the lifting platform;
[0006] And a traction component, which connects the blocking component and the fixing base.
[0007] The blocking member has a blocking position protruding from the conveying surface of the lifting platform and a yielding position lower than the conveying surface of the lifting platform; during the lifting process, the traction member is used to drive the blocking member to rotate from the blocking position to the yielding position.
[0008] In one embodiment, the blocking device further includes a fixed shaft, the blocking member is rotatably mounted on the lifting platform via the fixed shaft, and an elastic member is installed between the fixed shaft and the blocking member. During the descent of the lifting platform, the elastic member is used to drive the blocking member to rotate from the avoidance position to the blocking position.
[0009] In one embodiment, the blocking member has a first end face and a second end face in its length direction. When the blocking member is in the blocking position, the first end face protrudes at least partially from the conveying surface of the lifting platform. A connecting member is connected to one end of the blocking member near the first end face. One end of the connecting member is connected to the blocking member, and the other end is connected to the traction member.
[0010] In one embodiment, the connector extends along the width direction of the blocking member and is perpendicular to the blocking member.
[0011] In one embodiment, the distance between the first end face and the fixed shaft is not less than the distance between the second end face and the fixed shaft.
[0012] In one embodiment, the blocking device further includes a first limiting member, which is connected to the lifting platform and located on the rotation path of the blocking member. When the traction member drives the blocking member to rotate to abut the first limiting member, the blocking member is in an avoidance position.
[0013] In one embodiment, the blocking device further includes a second limiting member connected to the lifting platform and located on the rotation path of the blocking member. When the elastic member drives the blocking member to rotate to abut the second limiting member, the blocking member is in the blocking position.
[0014] In one embodiment, in the horizontal direction, the first limiting member and the second limiting member are located on both sides of the axis of the fixed shaft.
[0015] In one embodiment, the elastic element includes a torsion spring sleeved on the fixed shaft, one torsion arm of the torsion spring being fixed to the fixed shaft, and the other torsion arm being connected to the blocking element.
[0016] In one embodiment, the traction element is a steel wire rope.
[0017] The technical solution of this invention connects a blocking component and a fixed base installed on the lifting platform via a traction component. During the lifting platform's ascent, the increased distance between the lifting platform and the fixed base causes the traction component to reach a tensioned state, applying a pulling force to the blocking component. As the lifting platform continues to rise, the fixed length of the traction component causes the blocking component to rotate downwards under the pulling force, reducing the height at the connection point between the traction component and the blocking component. Ultimately, this causes the blocking component to switch to a clearance position below the conveying surface of the lifting platform. By utilizing the height variation during lifting, a suitable traction component length can be selected based on the required height for the lifting platform to align with the conveying surface of the docking equipment. This ensures that when the lifting platform reaches this alignment, the traction component precisely pulls the blocking component to the clearance position. The blocking device has a simple structure, requiring neither an additional drive component to rotate the blocking component nor a sensing component to detect whether the lifting platform has risen to the docking position. Furthermore, it is easy to operate; the blocking component automatically switches to the clearance position after the lifting platform reaches the docking position. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the structure of a blocking device of the present invention installed on a lifting and conveying equipment, according to an embodiment of the present invention.
[0020] Figure 2 This is a schematic diagram of an embodiment of the blocking device for lifting and conveying equipment according to the present invention;
[0021] Figure 3 This is a schematic diagram of the installation structure of the elastic element, the blocking element, and the fixed shaft in one embodiment of the blocking device for lifting and conveying equipment according to the present invention.
[0022] Explanation of icon numbers:
[0023] label name label name 10 blocking device 100 blocking component 110 First end face 120 Second end face 200 Traction component 300 Fixed shaft 400 elastic element 500 connector 600 First limiting component 700 Second limiting component 20 Lifting Platform 30 Fixed base
[0024] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.
[0026] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.
[0027] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.
[0028] Lifting and conveying equipment typically has a fixed base and a lifting platform that can be raised and lowered relative to the fixed base, such as a board handling machine. When the board is on the lifting platform but the platform is not raised, a blocking device is needed to limit the board's position on the platform to prevent it from detaching and interfering with other components during platform movement. Once the platform is raised and its conveying surface is flush with other conveying surfaces, the blocking device needs to be released to allow the board to smoothly enter the conveying surface of other devices. Therefore, existing blocking devices typically include a drive component and a sensing component. The sensing component detects whether the platform is in position, and the drive component controls the blocking device to either stop or release the board. This results in complex structures and operations, and high costs.
[0029] To solve the above problems, the present invention proposes a blocking device 10 for lifting and conveying equipment. The blocking device 10 removes the obstruction restriction by using the lifting platform 20 to move relative to the fixed seat 30. The structure is simple and easy to install.
[0030] Please see Figure 1 and Figure 2In this embodiment, the blocking device 10 includes a blocking member 100 and a traction member 200; the blocking member 100 is rotatably mounted on the lifting platform 20, and the traction member 200 connects the blocking member 100 and the fixed base 30; wherein, the blocking member 100 has a blocking position protruding from the conveying surface of the lifting platform 20, and a yielding position lower than the conveying surface of the lifting platform 20; during the process of the lifting platform 20 rising, the traction member 200 is used to drive the blocking member 100 to rotate from the blocking position to the yielding position.
[0031] By installing the blocking member 100, which has a blocking position protruding from the conveying surface of the lifting platform 20 and a clearance position lower than the conveying surface of the lifting platform 20, when the lifting platform 20 is not raised to be flush with the conveying surface of other devices, the blocking member 100 in the blocking position can block the product on the lifting platform 20. When the lifting platform 20 is raised to be flush with the conveying surface of other devices, the blocking member 100 switches to the clearance position, releasing the obstruction restriction on the lifting platform 20, and the product can be smoothly moved from the conveying surface of the lifting platform 20 to the conveying surface of the docking device.
[0032] The traction member 200 connects the blocking member 100 and the fixed seat 30 mounted on the lifting platform 20. During the lifting process, as the distance between the lifting platform 20 and the fixed seat 30 increases, the traction member 200 reaches a tensioned state, applying a pulling force to the blocking member 100. As the lifting platform 20 continues to rise, since the length of the traction member 200 is fixed, the blocking member 100 rotates downwards under the pulling force of the traction member 200, reducing the height at the connection point between the traction member 200 and the blocking member 100. Ultimately, the blocking member 100 switches to a clearance position lower than the conveying surface of the lifting platform 20. By utilizing the height change of the lifting platform 20 during its rise, by selecting a suitable length of the traction member 200 based on the required height for the lifting platform 20 to rise to be flush with the conveying surface of the docking equipment, the traction member 200 can precisely pull the blocking member 100 to the clearance position when the lifting platform 20 rises to be flush with the conveying surface of the docking equipment. The blocking device 10 has a simple structure. It does not require an additional drive component to drive the blocking member 100 to rotate, nor does it require a sensing component to sense whether the lifting platform 20 has risen to the docking position. At the same time, it is easy to operate. After the lifting platform 20 rises to the docking position, the blocking member 100 can automatically switch to the avoidance position.
[0033] Please see Figure 2 and Figure 3Furthermore, in one embodiment, the blocking device 10 further includes a fixed shaft 300, the blocking member 100 is rotatably mounted on the lifting platform 20 via the fixed shaft 300, and an elastic member 400 is installed between the fixed shaft 300 and the blocking member 100. During the descent of the lifting platform 20, the elastic member 400 is used to drive the blocking member 100 to rotate from the avoidance position to the blocking position.
[0034] Considering that when the lifting platform 20 descends, the blocking member 100 needs to be restored from the avoidance position to the blocking position, the elastic member 400 is installed between the fixed shaft 300 and the blocking member 100. During the process of the traction member 200 pulling the blocking member 100 to rotate towards the avoidance position, the elastic potential energy of the elastic member 400 increases, and it applies a spring force to the blocking member 100 in the opposite direction of rotation. After the lifting platform 20 descends, the traction member 200 releases its traction effect on the blocking member 100, and the blocking member 100, under the action of the elastic force of the elastic member 400, rotates towards the blocking position and finally returns to the blocking position. That is, the traction member 200 enables the blocking member 100 to automatically rotate from the blocking position to the avoidance position, and the elastic member 400 enables the blocking member 100 to automatically rotate from the avoidance position to the blocking position, achieving automatic switching between the blocking position and the avoidance position.
[0035] Specifically, the blocking member 100 has a first end face 110 and a second end face 120 in its length direction. When the blocking member 100 is in the blocking position, the first end face 110 protrudes at least partially from the conveying surface of the lifting platform 20. A connecting member 500 is connected to one end of the blocking member 100 near the first end face 110. One end of the connecting member 500 is connected to the blocking member 100, and the other end is connected to the traction member 200.
[0036] One end of the connector 500 is connected to the blocking member 100, and the other end is connected to the traction member 200. That is, the traction member 200 is connected to the blocking member 100 through the connector 500. When the blocking member 100 is in the blocking position, the first end face 110 protrudes at least partially from the conveying surface of the lifting platform 20. The connector 500 connects to the end of the blocking member 100 near the first end face 110, so that when the traction member 200 pulls the connector 500, the portion of the blocking member 100 protruding from the conveying surface of the lifting platform 20 is subjected to a downward rotational torque. The first end face 110 rotates downward around the fixed shaft 300 until the blocking member 100 as a whole no longer protrudes from the conveying surface of the lifting platform 20, thus allowing the blocking member 100 to rotate to the avoidance position.
[0037] It is understandable that in order to increase the traction effect of the traction member 200 on the blocking member 100, it is necessary to increase the torque applied to the blocking member 100, and the magnitude of the torque is related to the magnitude of the force and the length of the lever arm.
[0038] Therefore, preferably, in one embodiment, to increase the pulling force exerted by the traction member 200 on the blocking member 100, the connecting member 500 extends along the width direction of the blocking member 100 and is perpendicular to the blocking member 100. This ensures that when the axis of the blocking member 100 in the length direction rotates around the fixed axis 300 as a rotating arm, the extending direction of the connecting member 500 is the same as the rotation direction of the blocking member 100 and remains perpendicular to the rotating arm. The pulling force exerted by the traction member 200 on the blocking member 100 through the connecting member 500 is perpendicular to the rotational arm of the blocking member 100, and no component force is generated towards the rotation center of the blocking member 100. This maximizes the effect of the traction member 200 in pulling the blocking member 100 to rotate.
[0039] Similarly, in one embodiment, the distance between the first end face 110 and the fixed shaft 300 is not less than the distance between the second end face 120 and the fixed shaft 300. Preferably, the distance between the first end face 110 and the fixed shaft 300 is greater than the distance between the second end face 120 and the fixed shaft 300. By increasing the distance between the first end face 110 and the fixed shaft 300, when the connecting member 500 is positioned close to the first end face 110, the distance between the connection point of the connecting member 500 and the blocking member 100 and the fixed shaft 300 increases. This increases the lever arm length when the traction member 200 pulls the blocking member 100 to rotate, thus increasing the torque applied to the blocking member 100 and ensuring the traction effect of the traction member 200 on the blocking member 100.
[0040] Please see Figure 2 In one embodiment, to limit the rotation angle of the traction member 200 driving the blocking member 100 to rotate, the blocking device 10 further includes a first limiting member 600. The first limiting member 600 is connected to the lifting platform 20 and is located on the rotation path of the blocking member 100. When the traction member 200 drives the blocking member 100 to rotate to abut the first limiting member 600, the blocking member 100 is in an avoidance position.
[0041] In the horizontal direction, the connecting portion of the traction member 200 and the blocking member 100 and the first limiting member 600 can be located on opposite sides of the axis of the fixed shaft 300. Taking the connection of the traction member 200 to the right end face of the blocking member 100 as an example, in the length direction of the blocking member 100, the fixed shaft 300 divides the blocking member 100 into upper and lower sections. When the blocking member 100 is in the blocking position, the upper section of the blocking member 100 at least partially protrudes from the conveying surface of the lifting platform 20. The traction member 200 is connected to the right end face of the upper section of the blocking member 100. Under the traction of the traction member 200, the upper section of the blocking member 100 rotates to the lower right, that is, the blocking member 100 rotates clockwise. The first limiting member 600 is located on the left side of the fixed shaft 300. When the blocking member 100 rotates clockwise to the left end face of the lower section abutting the first limiting member 600, the first limiting member 600 blocks the blocking member 100, and the blocking member 100 cannot continue to rotate, that is, the rotation angle of the blocking member 100 under the traction of the traction member 200 is limited.
[0042] Correspondingly, the connecting portion of the traction member 200 and the blocking member 100 can be located on the same side of the fixed shaft 300 along its axial direction as the first limiting member 600. The traction member 200 is connected to the right end face of the upper section of the blocking member 100, and the first limiting member 600 is located on the right side of the fixed shaft 300. Under the traction of the traction member 200, the blocking member 100 rotates clockwise until its upper right end face abuts against the first limiting member 600, which can also prevent the blocking member 100 from continuing to rotate.
[0043] Furthermore, to limit the rotation angle of the blocking member 100 driven by the elastic member 400, in one embodiment, the blocking device 10 further includes a second limiting member 700. The second limiting member 700 is connected to the lifting platform 20 and is located on the rotation path of the blocking member 100. When the elastic member 400 drives the blocking member 100 to rotate to abut against the second limiting member 700, the blocking member 100 is in the blocking position.
[0044] Similarly, in the horizontal direction, the first limiting member 600 and the second limiting member 700 are located on opposite sides of the axis of the fixed shaft 300. Taking the first limiting member 600 located on the right side of the fixed shaft 300 and the second limiting member 700 located on the left side of the fixed shaft 300 as an example, the traction member 200 is connected to the right end face of the upper section of the blocking member 100. Under the traction of the traction member 200, the blocking member 100 rotates clockwise until the right end face of the upper section abuts against the first limiting member 600, and the traction member 200 can no longer pull the blocking member 100 to rotate. The elastic member 400 drives the blocking member 100 to rotate counterclockwise until the left end face of the upper section abuts against the second limiting member 700, and the elastic member 400 can no longer drive the blocking member 100 to rotate.
[0045] It is understood that, in the horizontal direction, the first limiting member 600 and the second limiting member 700 can be located on the same side of the axis of the fixed shaft 300. Taking the first limiting member 600 and the second limiting member 700 located on the left side of the fixed shaft 300, and the traction member 200 connected to the right end face of the upper section of the blocking member 100 as an example, the blocking member 100 rotates clockwise under the traction of the traction member 200 until the left end face of the lower section abuts against the first limiting member 600, at which point the traction member 200 can no longer pull the blocking member 100 to rotate. The elastic member 400 drives the blocking member 100 to rotate counterclockwise until the left end face of the upper section abuts against the second limiting member 700, at which point the elastic member 400 can no longer drive the blocking member 100 to rotate. At this time, the first limiting member 600 and the second limiting member 700 can be integrally set, that is, they simultaneously limit the rotation angle of the blocking member 100 in both clockwise and counterclockwise directions.
[0046] Please see Figure 3 Specifically, in one embodiment, the elastic element 400 includes a torsion spring sleeved on the fixed shaft 300. One torsion arm of the torsion spring is fixed to the fixed shaft 300, and the other torsion arm is connected to the blocking element 100. During the process of the traction member 200 pulling the blocking element 100 to rotate, the torsion arm fixedly connected to the fixed shaft 300 remains stationary, while the torsion arm connected to the blocking element 100 rotates together with the blocking element 100, causing the included angle formed by the two torsion arms to increase or decrease. After the traction effect of the traction member 200 on the blocking element 100 is released, the included angle formed by the two torsion arms tends to return to its initial angle, ultimately driving the blocking element 100 to rotate back to its initial blocking position.
[0047] Specifically, the material of the traction member 200 needs to have a certain degree of flexibility so that when the lifting platform 20 is not raised, the traction member 200 can be in a relaxed state to release the traction effect on the blocking member 100, and when the lifting platform 20 is raised, the traction member 200 can be in a tensioned state to apply traction force to the blocking member 100. At the same time, the material of the traction member 200 also needs to have a certain degree of rigidity and toughness to avoid breakage during the rotation of the blocking member 100, or breakage during repeated switching between relaxed and tensioned states. Therefore, preferably, in one embodiment, a steel wire rope is selected as the traction member 200.
[0048] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made under the concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.
Claims
1. A blocking device for a lifting conveyor, the lifting conveyor having a fixed base and a lifting platform movable relative to the fixed base, characterized in that, The blocking device includes: The blocking component is rotatably mounted on the lifting platform; And a traction component, which connects the blocking component and the fixing base. The blocking member has a blocking position protruding from the conveying surface of the lifting platform and a yielding position lower than the conveying surface of the lifting platform; during the lifting process, the traction member is used to drive the blocking member to rotate from the blocking position to the yielding position. The blocking device further includes a fixed shaft, and the blocking member is rotatably mounted on the lifting platform via the fixed shaft. An elastic member is installed between the fixed shaft and the blocking member. During the descent of the lifting platform, the elastic member is used to drive the blocking member to rotate from the avoidance position to the blocking position. The blocking member has a first end face and a second end face in its length direction. When the blocking member is in the blocking position, the first end face protrudes at least partially from the conveying surface of the lifting platform. A connecting member is connected to one end of the blocking member near the first end face. One end of the connecting member is connected to the blocking member, and the other end is connected to the traction member.
2. The blocking device for lifting and conveying equipment as described in claim 1, characterized in that, The connector extends along the width direction of the blocking member and is perpendicular to the blocking member.
3. The blocking device for lifting and conveying equipment as described in claim 1, characterized in that, The distance from the first end face to the fixed shaft is not less than the distance from the second end face to the fixed shaft.
4. The blocking device for a lifting and conveying equipment as described in any one of claims 1 to 3, characterized in that, The blocking device further includes a first limiting member, which is connected to the lifting platform and located on the rotation path of the blocking member. When the traction member drives the blocking member to rotate to abut the first limiting member, the blocking member is in an avoidance position.
5. The blocking device for lifting and conveying equipment as described in claim 4, characterized in that, The blocking device further includes a second limiting member, which is connected to the lifting platform and located on the rotation path of the blocking member. When the elastic member drives the blocking member to rotate to abut the second limiting member, the blocking member is in the blocking position.
6. The blocking device for lifting and conveying equipment as described in claim 5, characterized in that, In the horizontal direction, the first limiting member and the second limiting member are located on both sides of the axis of the fixed shaft.
7. The blocking device for lifting and conveying equipment as described in claim 1, characterized in that, The elastic element includes a torsion spring sleeved on the fixed shaft, one torsion arm of the torsion spring being fixed to the fixed shaft, and the other torsion arm being connected to the blocking element.
8. The blocking device for lifting and conveying equipment as described in claim 1, characterized in that, The traction component is a steel wire rope.