Automatic anchoring device and method for portal crane trolley

Abstract

The invention discloses an automatic anchoring device and method for a portal crane trolley, and the automatic anchoring device is arranged on an operation platform of the crane trolley. The automatic anchoring device comprises a base fixed to the top of the operation platform, a push rod arranged on one side of the base, an anchoring pin connected to the free end of the push rod, a base sleeve arranged on the top of the operation platform and an anchoring base arranged on one side of the crane trolley, and a panel is arranged on the top of the anchoring base. The vertical height of the operating platform is greater than that of the anchoring base; by arranging the anchoring pin and the anchoring base which are of special structures and matching the three sensors with the stroke limiting switch, automatic anchoring of the crane trolley is achieved, the operation efficiency is high, the crane trolley does not need to be adjusted back and forth, operators do not need to observe on site, a large amount of manpower and material resources are saved, and the working efficiency is improved. In addition, potential safety hazards caused by traditional manual anchoring are avoided, and the panel and the anchoring pin can be replaced conveniently and rapidly.

Description

Technical Field

[0001] The invention belongs to the technical field of crane trolley anchoring, and in particular relates to an automatic anchoring device and method for a gantry crane trolley. Background Art

[0002] Gantry crane is a variation of bridge crane. In ports, it is mainly used for loading and unloading operations in outdoor cargo yards, material yards, and bulk cargo. Its metal structure is like a door-shaped frame, with two legs installed under the load-bearing main beam. It can walk directly on the ground track. Both ends of the main beam can have outward cantilever beams. Gantry cranes have the characteristics of high site utilization, large operating range, wide adaptability, and strong versatility. They are widely used in port cargo yards.

[0003] At present, the trolley anchoring method of gantry crane is mainly completed by manual operation, and a small number of automatic anchoring devices are used. However, there are common problems such as difficulty in anchoring holes, inaccurate movements, and repeated operations. It is often necessary to add a separate person to check the anchoring position on site, which increases the labor intensity, operation time and operation risk of the operator, and affects the work efficiency of the whole machine, especially some large gantry cranes with a whole machine height of more than 70m. When the operator works at the upper trolley anchoring point, the working space is small, the working height is high, and the risk is relatively large. In summary, a safe and efficient automatic anchoring device and method are urgently needed. Summary of the invention

[0004] In order to solve some or all of the technical problems existing in the above-mentioned prior art, the present invention provides an automatic anchoring device and method for a gantry crane trolley.

[0005] On the one hand, the present invention provides an automatic anchoring device for a gantry crane trolley, the automatic anchoring device is arranged on the operating platform of the crane trolley, the automatic anchoring device comprises a base fixed to the top of the operating platform, a push rod arranged on one side of the base, an anchoring pin connected to the free end of the push rod, a base sleeve arranged on the top of the operating platform, and an anchoring base arranged on one side of the crane trolley, a panel is arranged on the top of the anchoring base, the vertical height of the operating platform is greater than the vertical height of the anchoring base, wherein:

[0006] The anchor pin is arranged in the base sleeve, and the side wall of the base sleeve is sequentially penetrated by the first sensor, the second sensor, and the third sensor from top to bottom, and the push rod is provided with a travel limit switch electrically connected to the first sensor, the second sensor, and the third sensor. A first through hole is opened on the operating platform corresponding to the base sleeve, and a second through hole corresponding to the first through hole is opened on the panel. A limit block is arranged on the outer periphery of the anchor pin, and a limit step is arranged on the inner wall of the base sleeve. The outer diameter of the limit block matches the inner diameter of the base sleeve, and the outer diameter of the anchor pin matches the inner diameter of the limit step.

[0007] As a specific embodiment, in the above-mentioned automatic anchoring device for a gantry crane trolley, a spring is arranged between the base sleeve and the anchor pin, a lifting plate is arranged at the free end of the push rod, a accommodating chamber is opened at the top of the anchor pin, a fixing plate is installed at the top of the accommodating chamber through fasteners, the push rod passes through the fixing plate, and the lifting plate is arranged in the accommodating chamber.

[0008] As a specific implementation, in the above-mentioned automatic anchoring device for the gantry crane trolley, a roller is provided at the bottom of the anchoring pin.

[0009] As a specific implementation, in the above-mentioned automatic anchoring device for the gantry crane trolley, a wear-resistant plate is provided on the top of the panel.

[0010] As a specific implementation, in the above-mentioned automatic anchoring device for a gantry crane trolley, the second through hole is an oblong hole opened on the top of the anchoring base along the width direction of the crane trolley.

[0011] As a specific implementation, in the above-mentioned automatic anchoring device for the gantry crane trolley, the fastener is a fastening bolt.

[0012] As a specific implementation, in the above-mentioned automatic anchoring device for the gantry crane trolley, the panel is detachably arranged on the anchoring base.

[0013] As a specific implementation, in the above-mentioned automatic anchoring device for the gantry crane trolley, the anchoring pin is detachably connected to the free end of the push rod.

[0014] On the other hand, the automatic anchoring method for a gantry crane trolley provided by the present invention comprises:

[0015] Step 1: First, the push rod is controlled to move upward by the travel limit switch until the limit block is located on the side of the first sensor, and the first sensor sends a signal to the travel limit switch, and the travel limit switch controls the push rod to stop moving upward, and the trolley is in a working state as a whole;

[0016] Step 2: When anchoring is required, the crane trolley moves to the specified position above the anchoring base on the operating platform, and then controls the push rod to move downward through the travel limit switch until the bottom of the anchor pin approaches and abuts against the panel, and the device as a whole is in an anchoring preparation state;

[0017] Step 3: The crane trolley continues to move toward the anchor base, and the anchor pin slides on the panel to the position above the second through hole and automatically falls into the second through hole. After falling to the limit block on the side of the third sensor, the third sensor sends a signal to the travel limit switch, and the travel limit switch controls the push rod to remain locked, and the device as a whole is in an anchored state;

[0018] Step 4: When the crane trolley needs to be converted to a normal working state, the push rod is controlled to move upward by the travel limit switch until the limit block is located on the side of the first sensor. The first sensor sends a signal to the travel limit switch, and the travel limit switch controls the push rod to stop moving upward. At this time, the trolley as a whole is in a working state.

[0019] Furthermore, in the above-mentioned automatic anchoring method for the gantry crane trolley, when the limit block falls and abuts against the top of the limit step, the bottom of the anchor pin and the lower surface of the panel are located in the same horizontal plane.

[0020] The automatic anchoring device and method for the gantry crane trolley of the present invention have the following advantages and positive effects:

[0021] (1) The present invention realizes automatic anchoring of the crane trolley by providing an anchor pin and an anchor base with a special structure, and the cooperation between three sensors and the travel limit switch. It not only has high working efficiency and does not need to adjust the crane trolley back and forth, but also does not need the operator to observe on site, thus saving a lot of manpower and material resources, and avoiding the safety hazards of traditional manual anchoring;

[0022] (2) The present invention disassembles the panel on the anchoring base and disassembles the anchoring pin to the free end of the push rod. When the panel and the anchoring pin are worn and fail to work normally, the old panel and the anchoring pin can be directly removed and the new panel and the anchoring pin can be installed. The replacement is convenient and quick, and the overall service life is greatly extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings in the following descriptions are only used to further understand the embodiments of the present invention and constitute a part of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0024] Figure 1 It is a structural schematic diagram of an automatic anchoring device for a gantry crane trolley of the present invention;

[0025] Figure 2 yes Figure 1 A partial enlarged view of middle Ⅰ;

[0026] Figure 3 This is a diagram of the normal working state of the automatic anchoring device for the gantry crane trolley of the present invention;

[0027] Figure 4 It is a diagram of the anchoring preparation state of the automatic anchoring device for the gantry crane trolley of the present invention;

[0028] Figure 5 It is an anchoring state diagram of the automatic anchoring device for the gantry crane trolley of the present invention.

[0029] Description of reference numerals:

[0030] 1-crane trolley, 11-operating platform, 2-base, 3-push rod, 31-lifting plate, 4-anchor pin, 41-accommodating bin, 42-fixing plate, 43-limiting block, 5-base sleeve, 51-first sensor, 52-second sensor, 53-third sensor, 54-first through hole, 55-limiting step, 6-anchoring base, 61-panel, 62-second through hole, 7-spring. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] like Figures 1 to 5As shown, on the one hand, the present invention discloses an automatic anchoring device for a gantry crane trolley, the automatic anchoring device is arranged on an operating platform 11 of the crane trolley 1, and is characterized in that the automatic anchoring device comprises a base 2 fixed to the top of the operating platform 11, a push rod 3 arranged on one side of the base 2, an anchoring pin 4 connected to the free end of the push rod 3, a base sleeve 5 arranged on the top of the operating platform 11, and an anchoring base 6 arranged on one side of the crane trolley 1, a panel 61 is arranged on the top of the anchoring base 6, the vertical height of the operating platform 11 is greater than the vertical height of the anchoring base 6, wherein the anchoring pin 4 is arranged in the base sleeve 5, and the side wall of the base sleeve 5 is sequentially penetrated from top to bottom with a first sensor 51, a second sensor 52, and a third sensor 53, the first sensor 51, the second sensor 52, and the third sensor 53. The sensing ends of 53 are all facing the anchor pin 4. A travel limit switch electrically connected to the first sensor 51, the second sensor 52, and the third sensor 53 is arranged in the push rod 3. The travel limit switch can control the up and down movement of the push rod 3. A first through hole 54 is opened on the operating platform 11 corresponding to the base sleeve 5. The anchor pin 4 can freely move in the first through hole 54 along the axial direction of the base sleeve 5. The panel 61 is provided with a second through hole 62 corresponding to the first through hole 54. Similarly, the anchor pin 4 can also freely move in the second through hole 62 along the axial direction of the base sleeve 5. A limit block 43 is arranged on the outer periphery of the anchor pin 4. The outer diameter of the limit block 43 matches the outer diameter of the fixing plate 42. A limit step 55 is arranged on the inner wall of the base sleeve 5. The outer diameter of the limit block 43 matches the inner diameter of the base sleeve 5. The outer diameter of the anchor pin 4 matches the inner diameter of the limit step 55.

[0033] As a specific embodiment, in the automatic anchoring device for a gantry crane trolley of the present invention, a spring 7 is arranged between the base sleeve 5 and the anchor pin 4, a lifting plate 31 is arranged at the free end of the push rod 3, a receiving chamber 41 is opened at the top of the anchor pin 4, the outer diameter of the lifting plate 31 matches the interior of the receiving chamber 41, a fixing plate 42 is installed on the top of the receiving chamber 41 through fasteners, the push rod 3 passes through the fixing plate 42, the push rod 3 can move freely axially in the circular hole opened on the fixing plate 42, the lifting plate 31 is arranged in the receiving chamber 41, and when the lifting plate 31 moves up in the receiving chamber 41, it will be limited by the axial position of the fixing plate 42.

[0034] As a specific embodiment, in the automatic anchoring device for a gantry crane trolley of the present invention, a roller is arranged at the bottom of the anchor pin 4. Such arrangement can convert the sliding friction between the anchor pin 4 and the panel 61 into rolling friction, thereby reducing the wear of the panel 61 and the anchor pin 4 and increasing the overall practical life of the device.

[0035] As a specific embodiment, in the automatic anchoring device for a gantry crane trolley of the present invention, a wear-resistant plate is arranged on the top of the panel 61. Such arrangement can make the panel 61 more durable, reduce the wear between the panel 61 and the anchor pin 4, and increase the overall practical life of the device.

[0036] As a specific embodiment, in the automatic anchoring device for a gantry crane trolley of the present invention, the second through hole 62 is an oblong hole opened on the top of the anchoring base 6 along the width direction of the crane trolley 1. Such a configuration can effectively prevent the lateral deviation of the anchor pin 4 caused by the lateral movement of the crane trolley 1, and is more convenient for hole alignment.

[0037] As a specific implementation, in the automatic anchoring device for the gantry crane trolley of the present invention, the fastener is a fastening bolt. Of course, other fasteners can also be used, which is not limited here.

[0038] As a specific embodiment, in the automatic anchoring device for a gantry crane trolley of the present invention, the panel 61 is detachably arranged on the anchoring base 6. In this way, when the crane trolley 1 has been anchored for a period of time and the panel 61 is worn and cannot work normally, the old panel 61 can be directly removed and a new panel 61 can be installed, so that the replacement is convenient and quick.

[0039] As a specific embodiment, in the automatic anchoring device for a gantry crane trolley of the present invention, the anchor pin 4 can be detachably connected to the free end of the push rod 3. With such an arrangement, when the crane trolley 1 has been anchored for a period of time and the anchor pin 4 is worn and cannot work normally, the old anchor pin 4 can be directly removed and a new anchor pin 4 can be installed, making replacement convenient and quick.

[0040] As a specific implementation, in the automatic anchoring device for the gantry crane trolley of the present invention, the push rod 3 is an electric push rod. Of course, other implementations such as a hydraulic push rod may also be used.

[0041] On the other hand, the present invention discloses an automatic anchoring method for a gantry crane trolley, which is implemented using the automatic anchoring device and specifically comprises the following steps:

[0042] Step 1: To release the anchoring, the operator first controls the push rod 3 to move upward through the travel limit switch, and the spring 7 is compressed until the limit block 43 is located on the side of the first sensor 51. The first sensor 51 sends a signal to the travel limit switch, and the travel limit switch controls the push rod 3 to stop moving upward. The overall anchoring state of the crane trolley 1 is released and it is in working state.

[0043] Step 2: When anchoring is required, the crane trolley 1 moves to the specified position above the anchoring base 6 on the operating platform 11, and then controls the push rod 3 to move downward through the travel limit switch, the spring 7 begins to relax, the bottom of the anchor pin 4 approaches and abuts against the panel 61, and the spring 7 stops relaxing. At this time, the limit block 43 is located on the side of the second sensor 52, and the second sensor 52 sends a signal to the travel limit switch. The travel limit switch controls the push rod 3 to continue to move downward for a first distance and then stop, and the device as a whole is in an anchoring preparation state;

[0044] Step 3: The crane trolley 1 continues to move toward the anchor base 6, the anchor pin 4 slides on the panel 61 to the position above the second through hole 62 and automatically falls into the second through hole 62, the limit block 43 falls and abuts against the top of the limit step 55, at this time the limit block 43 is located on the side of the third sensor 53, the third sensor 53 sends a signal to the travel limit switch, the travel limit switch controls the push rod 3 to remain locked, and the device as a whole is in an anchored state;

[0045] Step 4: When the crane trolley 1 needs to be converted to a normal working state, the push rod 3 is controlled to move upward through the travel limit switch until the limit block 43 is located on the side of the first sensor 51. The first sensor 51 sends a signal to the travel limit switch, and the travel limit switch controls the push rod 3 to stop moving upward. At this time, the trolley as a whole is in a working state.

[0046] Furthermore, in the automatic anchoring method for the gantry crane trolley of the present invention, when the limit block 43 falls and abuts against the top of the limit step 55, the bottom of the anchor pin 4 and the lower surface of the panel 61 are located in the same horizontal plane.

[0047] As another embodiment, there is also included an automatic anchoring method for a gantry crane trolley, which is implemented using the above-mentioned automatic anchoring device and specifically includes the following steps:

[0048] Step 1: First, the push rod is controlled to move upward through the travel limit switch until the limit block is located on the side of the first sensor. The first sensor sends a signal to the travel limit switch, and the travel limit switch controls the push rod to stop moving upward, and the trolley is in a working state as a whole;

[0049] Step 2: When anchoring is required, the crane trolley 1 moves to the specified position above the anchoring base 6 on the operating platform 11, and then controls the push rod 3 to move downward through the travel limit switch until the bottom of the anchor pin 4 approaches and abuts against the panel 61, and the device as a whole is in an anchoring preparation state;

[0050] Step 3: The crane trolley 1 continues to move toward the anchor base 6, and the anchor pin 4 slides on the panel 61 to the position above the second through hole 62 and automatically falls into the second through hole 62. After falling to the limit block 43 being located on the side of the third sensor 53, the third sensor 53 sends a signal to the travel limit switch, and the travel limit switch controls the push rod 3 to remain locked, and the device as a whole is in an anchored state;

[0051] Step 4: When the crane trolley 1 needs to be converted to a normal working state, the push rod 3 is controlled to move upward through the travel limit switch until the limit block 43 is located on the side of the first sensor 51. The first sensor 51 sends a signal to the travel limit switch, and the travel limit switch controls the push rod 3 to stop moving upward. At this time, the trolley as a whole is in a working state.

[0052] In summary, compared with the prior art, the automatic anchoring device and method for the gantry crane trolley of the present invention has the following advantages and positive effects:

[0053] (1) The present invention realizes automatic anchoring of the crane trolley 1 by providing an anchor pin 4 and an anchor base 6 with a special structure, and by the cooperation between three sensors and a travel limit switch. This not only has high operating efficiency and does not require the crane trolley 1 to be adjusted back and forth, but also does not require on-site observation by operators, thus saving a lot of manpower and material resources and avoiding the safety hazards of traditional manual anchoring.

[0054] (2) The present invention enables the panel 61 to be detachably arranged on the anchoring base 6, and the anchoring pin 4 to be detachably connected to the free end of the push rod 3. When the panel 61 and the anchoring pin 4 are worn and cannot work normally, the old panel 61 and the anchoring pin 4 can be directly removed and new ones can be installed. The replacement is convenient and quick, and the overall service life is greatly extended.

[0055] It should be noted that, in this article, unless otherwise clearly specified and limited, the term "connection" or its synonyms should be understood in a broad sense. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. Moreover, expressions such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. At the same time, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a process, method, article or device. In addition, "front", "back", "left", "right", "upper" and "lower" in this article are all referenced to the placement state shown in the accompanying drawings.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic anchoring device for a gantry crane trolley, the automatic anchoring device being arranged on an operating platform of the crane trolley, characterized in that: The automatic anchoring device comprises a base fixed to the top of the operating platform, a push rod arranged on one side of the base, an anchor pin connected to the free end of the push rod, a base sleeve arranged on the top of the operating platform, and an anchoring base arranged on one side of the crane trolley, a panel is arranged on the top of the anchoring base, and the vertical height of the operating platform is greater than the vertical height of the anchoring base, wherein: The anchor pin is arranged in the base sleeve, and the side wall of the base sleeve is sequentially penetrated by the first sensor, the second sensor, and the third sensor from top to bottom, and the push rod is provided with a travel limit switch electrically connected to the first sensor, the second sensor, and the third sensor. A first through hole is opened on the operating platform corresponding to the base sleeve, and a second through hole corresponding to the first through hole is opened on the panel. A limit block is arranged on the outer periphery of the anchor pin, and a limit step is arranged on the inner wall of the base sleeve. The outer diameter of the limit block matches the inner diameter of the base sleeve, and the outer diameter of the anchor pin matches the inner diameter of the limit step.

2. The automatic anchoring device for a gantry crane trolley according to claim 1, characterized in that: A spring is arranged between the base sleeve and the anchor pin, a lifting plate is arranged at the free end of the push rod, a accommodating chamber is opened at the top of the anchor pin, a fixing plate is installed at the top of the accommodating chamber through fasteners, the push rod passes through the fixing plate, and the lifting plate is arranged in the accommodating chamber.

3. The automatic anchoring device for a gantry crane trolley according to claim 1, characterized in that: A roller is arranged at the bottom of the anchor pin.

4. The automatic anchoring device for a gantry crane trolley according to claim 1, characterized in that: A wear-resistant plate is arranged on the top of the panel.

5. The automatic anchoring device for a gantry crane trolley according to claim 1, characterized in that: The second through hole is an oblong hole opened on the top of the anchoring base along the width direction of the crane trolley.

6. The automatic anchoring device for a gantry crane trolley according to claim 1, characterized in that: The fastener is a fastening bolt.

7. The automatic anchoring device for a gantry crane trolley according to claim 1, characterized in that: The panel is detachably mounted on the anchoring base.

8. The automatic anchoring device for a gantry crane trolley according to claim 1, characterized in that: The anchor pin is detachably connected to the free end of the push rod.

9. An automatic anchoring method for a gantry crane trolley, the automatic anchoring method for a gantry crane trolley being implemented by using the automatic anchoring device for a gantry crane trolley as claimed in any one of claims 1 to 8, comprising: Step 1: First, the push rod is controlled to move upward by the travel limit switch until the limit block is located on the side of the first sensor, and the first sensor sends a signal to the travel limit switch, and the travel limit switch controls the push rod to stop moving upward, and the trolley is in a working state as a whole; Step 2: When anchoring is required, the crane trolley moves to the specified position above the anchoring base on the operating platform, and then controls the push rod to move downward through the travel limit switch until the bottom of the anchor pin approaches and abuts against the panel, and the device as a whole is in an anchoring preparation state; Step 3: The crane trolley continues to move toward the anchor base, and the anchor pin slides on the panel to the position above the second through hole and automatically falls into the second through hole. After falling to the limit block on the side of the third sensor, the third sensor sends a signal to the travel limit switch, and the travel limit switch controls the push rod to remain locked, and the device as a whole is in an anchored state; Step 4: When the crane trolley needs to be converted to a normal working state, the push rod is controlled to move upward by the travel limit switch until the limit block is located on the side of the first sensor. The first sensor sends a signal to the travel limit switch, and the travel limit switch controls the push rod to stop moving upward. At this time, the trolley as a whole is in a working state.

10. The automatic anchoring method for a gantry crane trolley according to claim 9, characterized in that: When the limiting block falls and abuts against the top of the limiting step, the bottom of the anchor pin and the lower surface of the panel are located in the same horizontal plane.

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