Hoisting portal frame type limiting safety device

Abstract

The utility model discloses a hoisting portal frame type limiting safety device which comprises two driving air cylinders oppositely arranged on a cross beam of a hoisting portal frame, two guide wheels arranged at the two ends of the cross beam correspondingly, and limiting components arranged on a left stand column and a right stand column of the hoisting portal frame correspondingly. Each driving air cylinder is connected with a connecting plate of one limiting component in the mode that a steel wire rope connected with the driving air cylinder strides across the corresponding guide wheel, one end of each connecting plate is hinged to limiting calipers through a pin shaft, and the pin shafts are installed in the guide grooves in a sliding mode and connected with the limiting calipers through springs. The lifting arm or the lifting frame of the lifting device is effectively guaranteed to be safely limited through the driving air cylinder, the steel wire rope, the limiting component and the like, and if the lifting frame exceeds the preset position, the driving air cylinder can drive the limiting calipers to rotate to the position below the lifting frame to achieve bearing of the lifting frame; therefore, accidents such as falling or overload of the device are prevented, and the use safety of the device is high.

Description

Technical Field

[0001] The present application relates to the technical field of hoisting safety devices, and in particular to a hoisting gantry type position limiting safety device that can be used on a processing production line to provide position limiting safety for hoisting equipment. Background Art

[0002] Lifting devices on traditional food processing lines are typically used to safely lift and move heavy objects or workpieces for processing, packaging, or other production processes. Using a lifting device can quickly and accurately position heavy objects or workpieces to the correct location, thereby improving production efficiency.

[0003] Traditional gantry-type lifting devices are at risk of accidental falling during operation. In order to avoid such accidents, the traditional protection solution is to install two square tube bumpers. These square tube bumpers are usually designed to withstand a certain amount of pressure and impact. Once hit by external force, they can alleviate the impact force in the event of a collision, thereby reducing the possibility of personal injury. There are also some protection solutions that install safety chains or safety ropes between the lifting device and the workpiece or between the lifting device and the mechanical structure. These chains or rigging are designed with sufficient strength and load-bearing capacity to prevent the workpiece or device from falling in accidental situations. In addition, there are some protection solutions that are designed with mechanical limit devices on the lifting device. When the lifting device reaches a specific height or position, these devices will automatically lock or stop descending to prevent further downward movement and falling. However, these above-mentioned protection solutions still have the following defects in actual application:

[0004] 1. Square tube bumpers are generally manually carried and placed in protective positions. There are still certain risks in use and the protective effect is average.

[0005] 2. The effectiveness of the safety chain or safety rope depends on the correct installation and use by humans. If the operator does not correctly connect or use the safety chain / rope, a fall accident may still occur.

[0006] 3. The response time and accuracy of mechanical limit devices may not be as good as those controlled by electronic or sensor devices. Especially in situations where a quick response is required, mechanical devices may not provide adequate protection.

[0007] Therefore, the safety device for preventing the lifting device from falling at this stage still has many defects, and it is urgent to propose a new technical solution to solve the problems existing in the existing technology. Utility Model Content

[0008] The present application provides a lifting gantry type limit safety device to solve the problem of relatively low safety of existing safety devices for preventing lifting devices from falling.

[0009] In order to achieve the above objectives, this application provides the following technical solutions:

[0010] The present application provides a lifting gantry type limit safety device, comprising a driving component, a first guide component, a second guide component, a first limit component and a second limit component; the driving component comprises a first driving cylinder and a second driving cylinder arranged on the lifting gantry beam, the first guide component comprises a first guide wheel arranged at one end of the lifting gantry beam, the second guide component comprises a second guide wheel arranged at the other end of the lifting gantry beam, the first limit component comprises a first mounting side plate arranged on the left column of the lifting gantry, the second limit component comprises a first mounting side plate arranged on the left column of the lifting gantry, and the second limit component comprises a first mounting side plate arranged on the left column of the lifting gantry. The second mounting side plate on the right column, the two mounting side plates are respectively provided with limit assemblies, the limit assemblies include a connecting plate, a spring, a limit caliper and a guide groove opened on the mounting side plate, one end of the connecting plate is hinged to the limit caliper through a pin shaft, the pin shaft is slidably installed in the guide groove, and the pin shaft is connected to the limit caliper through a spring; the first steel wire rope is connected to the cylinder rod of the first driving cylinder, the first steel wire rope crosses the first guide wheel and is connected to the connecting plate on the left column, the second steel wire rope is connected to the cylinder rod of the second driving cylinder, the second steel wire rope crosses the second guide wheel and is connected to the connecting plate on the right column.

[0011] Furthermore, in the above technical solution, the first driving cylinder and the second driving cylinder are both fixed on the cylinder frame, and the cylinder frame is fastened to the crossbeam of the lifting gantry by fastening bolts. The outward extension direction of the cylinder rod of the first driving cylinder is opposite to the outward extension direction of the cylinder rod of the second driving cylinder, and the length direction of the cylinder rod of the first driving cylinder and the length direction of the cylinder rod of the second driving cylinder are both the same as the length direction of the crossbeam of the lifting gantry.

[0012] Furthermore, a first connecting seat is provided on the cylinder rod of the first driving cylinder, and a second connecting seat is provided on the cylinder rod of the second driving cylinder. The first connecting seat is fixedly connected to the first steel wire rope, and the second connecting seat is fixedly connected to the second steel wire rope.

[0013] Furthermore, a first fixed seat is installed at the left end of the lifting gantry beam, a first horizontal rotating shaft is provided on the first fixed seat, a first guide wheel is installed on the first horizontal rotating shaft, the first guide wheel is vertically arranged, and a slot for adapting to the first steel wire rope is provided on the circumferential surface of the first guide wheel; a second fixed seat is installed at the right end of the lifting gantry beam, a second fixed seat is provided on the second horizontal rotating shaft, a second guide wheel is installed on the second horizontal rotating shaft, the second guide wheel is vertically arranged, and a slot for adapting to the second steel wire rope is provided on the circumferential surface of the second guide wheel.

[0014] Furthermore, the first fixing seat and the second fixing seat are both fastened to the lifting gantry beam by screws.

[0015] Furthermore, the limit caliper is a strip-shaped plate-like structural member, one end of the limit caliper forms a fixed connection end, and the other end forms a limit clamping end. The fixed connection end is provided with a fixed shaft, a hinge hole and a spring mounting seat. The limit caliper is rotatably connected to the mounting side plate through the fixed shaft, the limit caliper is connected to the corresponding connecting hole on the connecting plate through the hinge hole and is hinged through the pin shaft, the limit caliper installs the spring through the spring mounting seat, and the spring is connected to the pin shaft.

[0016] Furthermore, a fork-shaped clamping groove is provided at the limit clamping end.

[0017] Furthermore, the first mounting side plate and the second mounting side plate are both vertically arranged plates, and the guide grooves are arc-shaped grooves.

[0018] Furthermore, the cylinder rod of the first driving cylinder extends outward, causing the first steel wire rope to move downward along the left column, thereby driving the connecting plate installed on the first mounting side plate to move downward, and the pin shaft slides down along the guide groove on the first mounting side plate and compresses the spring, causing the limit caliper to rotate in the first direction with the fixed axis as the rotation center, and the limit caliper rotates to be parallel to the left column; the cylinder rod of the first driving cylinder retracts, causing the first steel wire rope to move up along the left column, thereby driving the connecting plate installed on the first mounting side plate to move up, and the pin shaft slides up along the guide groove on the first mounting side plate and the spring gradually returns to its initial state, causing the limit caliper to rotate in the second direction with the fixed axis as the rotation center, and the limit caliper rotates to form an angle with the left column, and the clamping groove on the limit caliper is below the boom or lifting frame on the lifting gantry.

[0019] Furthermore, the driving component is connected to a sensor signal for monitoring the working height of the boom or lifting frame on the lifting gantry, and the sensor is connected to a control system signal. The control system can send an action signal to the driving component based on the signal received from the sensor.

[0020] Compared with the prior art, this application has at least the following beneficial effects:

[0021] 1. The lifting gantry type limit safety device provided in the present application can effectively ensure the safe limitation of the boom or lifting frame of the lifting device by setting the first limit component and the second limit component on the left and right columns of the lifting gantry, and cooperating with the design of the limit component. After installation and use, when the boom of the lifting gantry exceeds the preset position, the driving component will drive the limit clamp to rotate to the bottom of the boom to realize the support of the boom, thereby preventing accidents such as the device falling or overloading, and the device is highly safe to use; in addition, the present application uses a cylinder and wire rope drive method, and the limit clamp adopts a spring connection, which has a faster response speed and improves safety. In addition, the present application sets the guide wheel and the mounting side plate along the gantry, which simplifies the structural layout of the limit system and saves space.

[0022] 2. The driving component of the lifting gantry type limit safety device provided in the present application can be connected to the sensor signal used to monitor the working height of the boom or lifting frame on the lifting gantry. The sensor is connected to the control system signal. The control system can send an action signal to the driving component according to the signal received from the sensor. During use, if the control system detects through the sensor that the boom exceeds the preset height, it sends an action signal to the first driving cylinder and the second driving cylinder of the driving component. The first driving cylinder and the second driving cylinder retract, and the limit caliper rotates to the bottom of the boom on the lifting gantry to achieve the support of the boom. Therefore, the present application can monitor the load and equipment status in real time, prevent dangerous situations such as overloading and overloading, significantly reduce the possibility of accidents, ensure the safety of operators and equipment, and effectively improve safety. At the same time, the present application can also prevent the equipment from running to a dangerous position or exceeding its design load, reduce equipment wear and damage, extend the service life of the equipment, reduce maintenance and replacement costs, and play a role in protecting the equipment.

[0023] 3. This application uses sensors and control systems to automatically monitor the boom height and automatically control the movement of the limit caliper, reducing the workload of operators and making lifting operations simpler and more efficient.

[0024] 4. This application can support the boom through the limit caliper to prevent accidental falls and protect the safety of on-site personnel and property.

[0025] 5. This application realizes the limit protection and anti-fall function of the device through limit calipers, springs, wire ropes and guide wheels, making the movement smoother, reducing the downtime caused by failures or accidents, and improving overall work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing the present application; for example, based on the technical concepts and exemplary drawings disclosed in this application, those skilled in the art are able to easily make routine adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, and dimensional ratios of certain units (components).

[0027] Figure 1 This is a schematic structural diagram of a position limiting safety device provided by the present application in one embodiment;

[0028] Figure 2This is a schematic diagram of the usage status of an embodiment in which the limit safety device provided by the present application is installed on a processing production line.

[0029] Description of reference numerals:

[0030] 100, first driving cylinder; 101, first connecting seat; 102, first steel wire rope; 103, first guide wheel; 104, first fixing seat; 105, first mounting side plate; 106, first connecting plate; 107, first limit caliper; 108, first pin; 109, first guide groove; 110, first spring; 111, first fixing shaft; 112, first clamping groove;

[0031] 200, second driving cylinder; 201, second connecting seat; 202, second steel wire rope; 203, second guide wheel; 204, second fixing seat; 205, second mounting side plate; 206, second connecting plate; 207, second limiting caliper; 208, second pin; 209, second guide groove; 210, second spring; 211, second fixing shaft; 212, second clamping groove;

[0032] 300, hoisting gantry; 301, beam; 302, left column; 303, right column;

[0033] 400, production line framework;

[0034] 500. Lifting frame. DETAILED DESCRIPTION

[0035] The present application will be further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0036] In the description of this application: unless otherwise specified, the meaning of "plurality" is two or more. The terms "first", "second", etc. in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (for example, they should not be understood as emphasizing the degree of importance or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0037] Terms such as "upper," "lower," "left," "right," "top," and "bottom" used in this application are generally intended to facilitate intuitive understanding by reference to the accompanying drawings and are not intended to be absolute limitations on positional relationships in actual products. Changes to these relative positional relationships, without departing from the technical concepts disclosed herein, are considered within the scope of this application.

[0038] In order to solve the problems existing in the prior art, the present application provides a hoisting gantry type limit safety device, which can be used for food machinery processing assembly line equipment, such as fruit and vegetable washing machines, meat bleaching machines, etc.

[0039] like Figure 1 、 2 The present application provides a lifting gantry 300 type position limiting safety device mainly including a driving component, a first guide component, a second guide component, a first position limiting component and a second position limiting component, wherein: the driving component includes a first driving cylinder 100 and a second driving cylinder 200 arranged on the crossbeam 301 of the lifting gantry 300, the first guide component includes a first guide wheel 103 arranged at one end of the crossbeam 301 of the lifting gantry 300, and the second guide component includes a second guide wheel 203 arranged at the other end of the crossbeam 301 of the lifting gantry 300. The first position limiting component and the second position limiting component have the same structure and are symmetrically arranged, as follows:

[0040] The first limiting component includes a first mounting side plate 105 provided on the left upright column 302 of the hoisting gantry 300, a first limiting assembly provided on the first mounting side plate 105, the first limiting assembly including a first connecting plate 106, a first spring 110, a first limiting caliper 107, and a first guide groove 109 provided on the first mounting side plate 105, one end of the first connecting plate 106 is hinged to the first limiting caliper 107 via a first pin 108, the first pin 108 is slidably installed in the first guide groove 109, and the first pin 108 is connected to the first limiting caliper 107 via a first spring 110;

[0041] The second limiting component includes a second mounting side plate 205 arranged on the right column 303 of the lifting gantry 300, and a second limiting assembly is arranged on the second mounting side plate 205. The second limiting assembly includes a second connecting plate 206, a second spring 210, a second limiting caliper 207 and a second guide groove 209 opened on the second mounting side plate 205. One end of the second connecting plate 206 is hinged to the second limiting caliper 207 through a second pin shaft 208, and the second pin shaft 208 is slidably installed in the second guide groove 209. The second pin shaft 208 is connected to the second limiting caliper 207 through a second spring 210.

[0042] The first steel wire rope 102 is connected to the cylinder rod of the above-mentioned first driving cylinder 100, and the first steel wire rope 102 crosses the first guide wheel 103 and is connected to the first connecting plate 106 on the left column 302. The second steel wire rope 202 is connected to the cylinder rod of the second driving cylinder 200, and the second steel wire rope 202 crosses the second guide wheel 203 and is connected to the second connecting plate 206 on the right column 303.

[0043] The present application sets a first limiting component and a second limiting component on the left and right columns 303 of the lifting gantry 300, and cooperates with the design of the limiting component to effectively ensure the safe limitation of the boom or lifting frame 500 of the lifting device. After installation and use, when the boom or lifting frame 500 of the lifting gantry 300 exceeds the preset position, the driving component will drive the limiting caliper to rotate to the bottom of the boom or lifting frame 500 to achieve the support of the boom or lifting frame 500, thereby preventing accidents such as the device falling or overloading, and improving the safety of the device.

[0044] This application uses a cylinder and wire rope drive method, combined with the configuration of guide wheels and mounting side plates, to simplify the structural layout of the limit system. This design not only saves space, but also reduces potential mechanical failure points, thereby improving the reliability and stability of the overall system.

[0045] This application uses a spring to connect the limit caliper to make it have a faster response speed. Once triggered, the limit caliper can be immediately driven to rotate into place. This rapid response capability is particularly important when encountering emergencies and can quickly protect the safety of equipment and operators.

[0046] In order to improve the automatic monitoring and control functions of the equipment, reduce the workload of operators, make lifting operations simpler, more efficient and smoother, reduce equipment wear and damage, extend the service life of the equipment, reduce maintenance and replacement costs, make the equipment more intelligent and user-friendly, in one embodiment of the present application, the driving component can be connected to the sensor signal used to monitor the working height of the boom on the lifting gantry, the sensor is connected to the control system signal, and the control system can send an action signal to the driving component according to the signal received from the sensor.

[0047] Specifically, the control system includes a storage module, a processing module, and a signal transceiver module. The storage module stores the preset height of the boom. The processing module compares the real-time height received from the sensor with the preset height of the boom stored in the storage module. If the real-time height exceeds the preset height, an action signal is sent to the drive component. It can be seen that the present application can monitor in real time through the sensor. When the boom exceeds the preset safety height threshold, the limit caliper pops up to prevent the boom from falling further, preventing the equipment from injuring people. Therefore, the present application can monitor the load and equipment status in real time, prevent dangerous situations such as overloading and overloading, significantly reduce the possibility of accidents, ensure the safety of operators and equipment, and effectively improve safety.

[0048] In a preferred embodiment of the present application, the above-mentioned first drive cylinder 100 and second drive cylinder 200 are both fixed on the cylinder frame, and the cylinder frame is fastened to the crossbeam 301 of the hoisting gantry 300 by fastening bolts, which can enhance the stability and rigidity of the overall system. This tight connection method can effectively transmit the force and torque during the hoisting process, reduce structural deformation and vibration, and improve the accuracy and safety of the operation. The use of fastening bolts to connect the cylinder frame and the hoisting gantry 300 can be easier to install and maintain than other connection methods (such as welding). The use of fastening bolts makes it more convenient to operate when the cylinder frame position needs to be replaced or adjusted, and can also reduce maintenance costs and time.

[0049] In a preferred embodiment of the present application, the outward extension direction of the cylinder rod of the first drive cylinder 100 is opposite to the outward extension direction of the cylinder rod of the second drive cylinder 200. The length direction of the cylinder rod of the first drive cylinder 100 and the length direction of the cylinder rod of the second drive cylinder 200 are both the same as the length direction of the crossbeam 301 of the lifting gantry 300. This symmetrical and directional design ensures stable and controlled movement of the crossbeam 301 during the lifting process, avoids unnecessary lateral forces and displacement, and improves the reliability of the entire system. By rationally arranging the cylinders and tightening the bolt connections, potential failure points and looseness are reduced, ensuring the stability and safety of the equipment under long-term and high-intensity operation.

[0050] In a preferred embodiment of the present application, a first connecting seat 101 is provided on the cylinder rod of the first driving cylinder 100, and a second connecting seat 201 is provided on the cylinder rod of the second driving cylinder 200. The first connecting seat 101 is fixedly connected to the first steel wire rope 102, and the second connecting seat 201 is fixedly connected to the second steel wire rope 202. In the present application, the cylinder rod of the first driving cylinder 100 is fixedly connected to the first wire rope 102 through the first connecting seat 101, and the cylinder rod of the second driving cylinder 200 is fixedly connected to the second wire rope 202 through the second connecting seat 201, thereby realizing distributed transmission of force in the lifting system. This design can effectively balance and share the force generated by the cylinder, reduce the force concentration at a single connection point, and help improve the stability and safety of the overall structure; further, the cylinder rod is directly fixed to the wire rope through the connecting seat, which can reduce the vibration and lateral displacement of the cylinder rod that may occur during the lifting process, which helps to ensure the stability of the lifting operation and avoid safety problems or operational instability caused by looseness or unexpected movement; further, the wire rope, as a connecting element, has high strength and durability, and is suitable for long-term and high-intensity lifting operations. Compared with other connection methods, such as chains or rigging, wire ropes are usually easier to install and maintain, and can maintain good working condition for a long time.

[0051] In a preferred embodiment of the present application, a first fixed seat 104 is installed at the left end of the crossbeam 301 of the lifting gantry 300, a first horizontal rotating shaft is provided on the first fixed seat 104, a first guide wheel 103 is installed on the first horizontal rotating shaft, the first guide wheel 103 is vertically arranged, and a card groove for adapting and engaging with the first steel wire rope 102 is provided on the circumferential surface of the first guide wheel 103; a second fixed seat 204 is installed at the right end of the crossbeam 301 of the lifting gantry 300, a second horizontal rotating shaft is provided on the second fixed seat 204, a second guide wheel 203 is installed on the second horizontal rotating shaft, the second guide wheel 203 is vertically arranged, and a card groove for adapting and engaging with the second steel wire rope 202 is provided on the circumferential surface of the second guide wheel 203; the first fixed seat 104 and the second fixed seat 204 are both fastened to the crossbeam 301 of the lifting gantry 300 by screws. The guide wheel in this application can effectively guide and position the wire rope, ensuring its stable operation and correct position during the lifting process. The setting of the guide wheel helps to reduce the swing and deviation of the wire rope during movement, thereby improving the accuracy and safety of the overall lifting system.

[0052] In a preferred embodiment of the present application, the limit caliper is a strip-shaped plate-like structural member, one end of the limit caliper forms a fixed connection end, and the other end forms a limit clamping end, the fixed connection end is provided with a fixed shaft, a hinge hole and a spring mounting seat, the limit caliper is rotatably connected to the mounting side plate through the fixed shaft, the limit caliper is connected to the corresponding connection hole on the connecting plate through the hinge hole and is hinged through a pin shaft, the limit caliper installs a spring through the spring mounting seat, and the spring is connected to the pin shaft; a fork-shaped clamping groove is provided at the limit clamping end.

[0053] The present application provides a fixed connection end that can be securely connected to the mounting side panel by providing a fixed shaft, a hinge hole, and a spring mounting seat. The combined design of the fixed shaft and the hinge hole, as well as the use of the spring mounting seat, ensures the firmness and stability of the connection, and can withstand the forces and vibrations generated during the lifting process. Through the design of the limit caliper, especially the fork-shaped clamping groove provided at the clamping end, the boom can be reliably supported and limited to prevent it from falling further. The spring installed on the spring mounting seat is connected to the pin shaft, which can provide a certain buffering and absorption effect, which helps to reduce the impact of shock and vibration on the structural connection in actual operation, and increases the stability and life of the connection.

[0054] In a preferred embodiment of the present application, the first mounting side plate 105 and the second mounting side plate 205 are both vertically arranged plates, and the guide groove is an arc-shaped groove. The guide groove can play a role of sliding limit and guidance for the pin shaft, ensuring the movement trajectory of the limit caliper.

[0055] In the initial state of the position limiting safety device provided in the present application, the cylinder rod of the first driving cylinder 100 is in an extended state, and the length direction of the position limiting caliper is parallel to the left column 302 .

[0056] In the limit safety device provided in the present application, when the cylinder rod of the first driving cylinder 100 is extended, the first steel wire rope 102 moves downward along the left column 302, thereby driving the first connecting plate 106 installed on the first mounting side plate 105 to move downward, and the first pin shaft 108 slides down along the first guide groove 109 on the first mounting side plate 105 and compresses the first spring 110, so that the first limit caliper 107 rotates in the first direction with the first fixed axis 111 as the rotation center. The first limit caliper 107 rotates to be parallel to the left column 302. This action is the reset action of the first limit caliper.

[0057] When the cylinder rod of the first driving cylinder 100 retracts, the first steel wire rope 102 moves up along the left column 302, thereby driving the first connecting plate 106 installed on the first mounting side plate 105 to move up, the first pin shaft 108 slides up along the first guide groove 109 on the first mounting side plate 105 and the first spring 110 gradually returns to its initial state, so that the first limit caliper 107 rotates in the second direction with the first fixed axis 111 as the rotation center, and the first limit caliper 107 rotates to form an angle with the left column 302, and the first clamping groove 112 on the first limit caliper 107 is below the boom or lifting frame 500 on the lifting gantry 300.

[0058] In summary, in order to solve and reduce the workload of operators, monitor the load and equipment status in real time, prevent dangerous situations such as overloading and overloading, significantly reduce the possibility of accidents, and ensure the safety of operators and equipment, the present application provides a lifting gantry type limit safety device. During the specific installation and manufacturing process, cylinders, sensors, proximity switches, intermediate relays and other automated components can be used for assembly. The limit caliper in the present application is made of 14mm thick carbon steel plate, and the pin shaft, fixed shaft, etc. are made of round steel shaft. Other components can be assembled by high-strength hardware welding. Therefore, the limit safety device provided by the present application integrates the material properties, conforms to the actual force, and designs a safety device with a simple and reasonable structure and relatively low manufacturing cost under the most economical cost conditions. The overall structure is strong and durable and easy to use.

[0059] The technical features of the above embodiments can be combined arbitrarily (as long as there is no contradiction in the combination of these technical features). In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

[0060] The present application has been described in a relatively specific and detailed manner through general explanations and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations may be made to these specific embodiments; however, as long as they do not depart from the technical concept of the present application, the technical solutions obtained by such conventional adjustments or further innovations also fall within the scope of protection of the claims of the present application.

Claims

1. A lifting gantry type limit safety device, characterized in that: It includes a driving component, a first guide component, a second guide component, a first limiting component and a second limiting component; The driving component includes a first driving cylinder and a second driving cylinder arranged on the lifting gantry beam, the first guide component includes a first guide wheel arranged at one end of the lifting gantry beam, the second guide component includes a second guide wheel arranged at the other end of the lifting gantry beam, the first limiting component includes a first mounting side plate arranged on the left column of the lifting gantry, the second limiting component includes a second mounting side plate arranged on the right column of the lifting gantry, and a limiting assembly is respectively arranged on the two mounting side plates, and the limiting assembly includes a connecting plate, a spring, a limiting caliper and a guide groove provided on the mounting side plate, one end of the connecting plate is hinged to the limiting caliper through a pin shaft, the pin shaft is slidably installed in the guide groove, and the pin shaft is connected to the limiting caliper through the spring; A first steel wire rope is connected to the cylinder rod of the first driving cylinder, and the first steel wire rope crosses the first guide wheel and is connected to the connecting plate on the left column. A second steel wire rope is connected to the cylinder rod of the second driving cylinder, and the second steel wire rope crosses the second guide wheel and is connected to the connecting plate on the right column.

2. The lifting gantry type position limiting safety device according to claim 1, characterized in that: The first driving cylinder and the second driving cylinder are both fixed on the cylinder frame, and the cylinder frame is fastened to the crossbeam of the lifting gantry by fastening bolts. The outward extension direction of the cylinder rod of the first driving cylinder is opposite to the outward extension direction of the cylinder rod of the second driving cylinder. The length direction of the cylinder rod of the first driving cylinder and the length direction of the cylinder rod of the second driving cylinder are both the same as the length direction of the crossbeam of the lifting gantry.

3. The lifting gantry type position limiting safety device according to claim 1, characterized in that: A first connecting seat is provided on the cylinder rod of the first driving cylinder, and a second connecting seat is provided on the cylinder rod of the second driving cylinder. The first connecting seat is fixedly connected to the first steel wire rope, and the second connecting seat is fixedly connected to the second steel wire rope.

4. The lifting gantry type limit safety device according to claim 1, characterized in that: A first fixing seat is installed at the left end of the hoisting gantry beam, a first horizontal rotating shaft is provided on the first fixing seat, the first horizontal rotating shaft is installed on the first guide wheel, the first guide wheel is vertically arranged, and a slot is provided on the circumferential surface of the first guide wheel for engaging with the first steel wire rope; A second fixed seat is installed at the right end of the lifting gantry beam, a second fixed seat is provided with a second horizontal rotating shaft, the second horizontal rotating shaft is installed with the second guide wheel, the second guide wheel is vertically arranged, and a card groove adapted to be engaged with the second steel wire rope is provided on the circumferential surface of the second guide wheel.

5. The lifting gantry type limit safety device according to claim 4, characterized in that: The first fixing seat and the second fixing seat are both fastened to the lifting gantry beam by screws.

6. The hoisting gantry type position limiting safety device according to claim 1, characterized in that: The limit caliper is a strip-shaped plate-like structural member, one end of the limit caliper forms a fixed connection end, and the other end forms a limit clamping end. The fixed connection end is provided with a fixed shaft, a hinge hole and a spring mounting seat. The limit caliper is rotatably connected to the mounting side plate through the fixed shaft, and the limit caliper is connected to the corresponding connection hole on the connecting plate through the hinge hole and is hinged through a pin shaft. The limit caliper installs a spring through the spring mounting seat, and the spring is connected to the pin shaft.

7. The lifting gantry type position limiting safety device according to claim 6, characterized in that: The position-limiting clamping end is provided with a fork-shaped clamping groove.

8. The lifting gantry type position limiting safety device according to claim 7, characterized in that: The first mounting side plate and the second mounting side plate are both vertically arranged plates, and the guide groove is an arc-shaped groove.

9. The lifting gantry type position limiting safety device according to claim 8, characterized in that: The cylinder rod of the first driving cylinder extends outward, causing the first steel wire rope to move downward along the left column, thereby driving the connecting plate mounted on the first mounting side plate to move downward, and the pin shaft slides down along the guide groove on the first mounting side plate and compresses the spring, causing the limit caliper to rotate in the first direction with the fixed axis as the rotation center, and the limit caliper rotates until it is parallel to the left column; The cylinder rod of the first driving cylinder retracts, causing the first steel wire rope to move up along the left column, thereby driving the connecting plate installed on the first mounting side plate to move up, the pin shaft slides up along the guide groove on the first mounting side plate and the spring gradually returns to its initial state, causing the limit caliper to rotate in the second direction with the fixed axis as the rotation center, and the limit caliper rotates to form an angle with the left column, and the clamping groove on the limit caliper is below the boom or lifting frame on the lifting gantry.

10. The hoisting gantry type position limiting safety device according to claim 1 or 9, characterized in that: The driving component is connected to a sensor signal for monitoring the working height of the boom or lifting frame on the lifting gantry, and the sensor is connected to a control system signal. The control system can send an action signal to the driving component based on the signal received from the sensor.

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