Positioning calibration mechanism for large portal frame detection

Abstract

The utility model discloses a positioning calibration mechanism for large portal frame detection, which relates to the technical field of portal frame detection, and comprises a hollow mounting seat and a verticality detector, a bidirectional screw rod is rotatably mounted on the inner walls of two sides of the hollow mounting seat, which are far away from each other; the two sides, away from each other, of the hollow mounting base are each provided with two horizontal sliding holes. According to the utility model, when the control knob is rotated, the two fixed clamping plates are driven to move close to each other or away from each other through the vertical rotating shaft, the first bevel gear, the second bevel gear, the bidirectional screw rod, the moving plate and the U-shaped moving rod, so that the hollow mounting seat and the verticality detector can be clamped and fixed on the portal frame supporting legs; according to the utility model, a worker can directly calibrate the portal frame supporting legs while observing the detection result of the perpendicularity detector, the worker does not need to repeatedly take the perpendicularity detector, a large amount of time can be saved, the working efficiency is improved, the operation is simple and convenient, and the practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry detection, in particular to a positioning and calibration mechanism for large-scale gantry detection. Background Art

[0002] Gantry cranes are a new type of lifting gantry developed to meet the daily production needs of small and medium-sized factories (companies), such as equipment handling, warehouse loading and unloading, lifting and repairing heavy equipment, and material transportation. They are suitable for mold manufacturing, auto repair shops, mines, civil construction sites, and other applications requiring lifting. They can reduce manpower, lower production and operating costs, and improve work efficiency. During the installation and use of gantry cranes, it is often necessary to check the verticality of the gantry legs and perform positioning calibration.

[0003] The traditional inspection and calibration method is generally that the staff first holds the verticality tester against the gantry legs to perform verticality inspection, and then takes down the verticality tester to calibrate the gantry legs. This is repeated many times until the gantry legs are inspected and calibrated to a qualified state. The inspection and calibration operations are cumbersome and time-consuming, resulting in low work efficiency. Therefore, in order to solve the above problems, the present application proposes a positioning and calibration mechanism for large gantry inspection. Utility Model Content

[0004] The purpose of this application is to provide a positioning and calibration mechanism for large gantry inspection to solve the problems raised in the above background technology.

[0005] The top end of the vertical shaft is connected with the vertical shaft by the toothed connecting strip, and the toothed connecting strip is connected with the toothed connecting strip to form a hollow cylindrical body, and the cylindrical body is connected with the toothed connecting strip to form a hollow cylindrical body.

[0006] Preferably, the gear transmission unit includes a first bevel gear fixedly mounted on the bottom end of the vertical rotating shaft, and a second bevel gear meshing with the first bevel gear is fixedly sleeved on the bidirectional lead screw.

[0007] Preferably, the locking assembly includes a fixed protrusion fixedly mounted on the top of the hollow mounting seat, a sliding hole is provided on the side of the fixed protrusion, a locking rod is slidably installed in the sliding hole, a plurality of locking holes are evenly provided on the circumferential side of the control knob, one end of the locking rod extends into one of the locking holes, and a reset unit is installed on the locking rod.

[0008] Preferably, the reset unit includes a fixing plate fixedly sleeved on the locking rod, the locking rod is sleeved with a reset spring, and both ends of the reset spring are respectively fixedly mounted on the fixing protrusion and the side of the fixing plate.

[0009] Preferably, the other end of the locking rod is fixedly connected to a connecting rope, the end of the connecting rope is fixedly connected to a control pull ring, and the top of the hollow mounting seat is fixedly mounted with a limiting column adapted to the control pull ring.

[0010] Preferably, two connecting plates are fixed on both sides of the verticality detector away from each other, bolt holes are opened on the sides of the four connecting plates, fastening bolts are arranged in the four bolt holes, and four fastening screw holes are opened on the side of the hollow mounting seat, and one end of the four fastening bolts are respectively threadedly installed in the four fastening screw holes.

[0011] Preferably, rubber anti-slip pads are fixed on the sides of the two fixing splints that are close to each other.

[0012] In summary, the technical effects and advantages of the utility model are:

[0013] 1. The utility model has a reasonable structure. When the control knob is turned, the two fixed splints are driven to move closer to or away from each other through the vertical shaft, the first bevel gear, the second bevel gear, the bidirectional screw, the movable plate and the U-shaped shift rod, so that the hollow mounting seat and the verticality tester can be clamped and fixed on the gantry legs. The staff can observe the test results of the verticality tester while directly calibrating the gantry legs. The staff no longer needs to repeatedly pick up the verticality tester, which can save a lot of time and improve work efficiency. The operation is simple and convenient, and the gantry legs are good.

[0014] 2. In the present invention, when the locking rod is pulled out of the locking hole, the control knob can be loosened. When the locking rod is loosened, the locking rod is automatically reset into the locking hole through the fixing plate under the elastic force of the reset spring, and the control knob is locked and cannot be rotated. This effectively prevents the hollow mounting seat and the verticality tester from loosening and falling off due to accidental touching of the control knob during the detection and calibration process, and provides good stability during use.

[0015] 3. In the present invention, when the control pull ring is pulled to drive the locking rod to move out of the locking hole through the connecting rope to unlock the control knob, the control pull ring can be hung on the limit column, so that the control knob can always remain in the unlocked state. Therefore, when turning the control knob, the staff no longer needs to pull the locking rod all the time, which is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of a partial cross-section structure of a hollow mounting seat in an embodiment of the present application;

[0019] Figure 3 This is a partially enlarged structural diagram of the connection between the control knob and the locking rod in an embodiment of the present application;

[0020] Figure 4 This is a front view structural diagram of an embodiment of the present application.

[0021] In the figure: 1. Hollow mounting seat; 2. Verticality tester; 3. Bidirectional screw; 4. Moving plate; 5. U-shaped shift rod; 6. Fixed splint; 7. Vertical shaft; 8. Control knob; 9. First bevel gear; 10. Second bevel gear; 11. Fixed bump; 12. Locking rod; 13. Return spring; 14. Connecting rope; 15. Control pull ring; 16. Limit column; 17. Connecting plate; 18. Fastening bolt. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 efforts are within the scope of protection of the present invention.

[0023] Example 1

[0024] refer to Figures 1-4The large gantry inspection positioning and calibration mechanism shown in the figure includes a hollow mounting seat 1 and a verticality detector 2. A two-way screw rod 3 is installed on the inner walls of the two sides of the hollow mounting seat 1 that are away from each other and are rotated together. Two horizontal sliding holes are provided on the two sides of the hollow mounting seat 1 that are away from each other, and a U-shaped shift rod 5 is slidably installed in the four horizontal sliding holes. One end of the two U-shaped shift rods 5 on the same side is fixedly installed with a movable plate 4. The two movable plates 4 are threadedly sleeved on the two-way screw rod 3, and the other ends of the two U-shaped shift rods 5 on the same side are fixedly installed with a fixed splint 6. A vertical rotating hole is provided on the top of the hollow mounting seat 1, and a vertical rotating shaft 7 is rotatably installed in the vertical rotating hole. The bottom end of the vertical rotating shaft 7 is connected to a gear transmission unit for making the two-way screw rod 3 rotate synchronously. A control knob 8 is fixedly installed on the top of the vertical rotating shaft 7. The verticality detector 2 is detachably mounted on the side of the hollow mounting seat 1, and a locking assembly for fixing the control knob 8 is installed on the hollow mounting seat 1.

[0025] By means of the above structure, when the control knob 8 is rotated, the vertical shaft 7 will be driven to rotate. The rotation of the vertical shaft 7 will drive the bidirectional screw 3 to rotate synchronously through the gear transmission unit. The rotation of the bidirectional screw 3 will drive the two movable plates 4 to move closer to or away from each other, and then the two fixed splints 6 can be driven to move closer to or away from each other through the U-shaped shift rod 5, so that the hollow mounting seat 1 and the verticality detector 2 can be clamped and fixed on the gantry legs, so that the staff can observe the test results of the verticality detector 2 while directly calibrating the gantry legs. The staff no longer needs to repeatedly take the verticality detector 2, which can save a lot of time and improve work efficiency. It is simple and convenient to operate and has good practicality.

[0026] In this embodiment, the gear transmission unit includes a first bevel gear 9 fixedly mounted on the bottom end of the vertical shaft 7, and a second bevel gear 10 fixedly sleeved on the bidirectional lead screw 3 and meshing with the first bevel gear 9. The advantage of this arrangement is that when the vertical shaft 7 rotates, it drives the first bevel gear 9 to rotate, and the rotation of the first bevel gear 9 drives the second bevel gear 10 to rotate together, which in turn drives the bidirectional lead screw 3 to rotate synchronously, achieving a synchronous transmission effect.

[0027] In this embodiment, two connecting pieces 17 are fixed to two sides of the verticality tester 2, each of which is spaced apart from the other. Bolt holes are defined in the sides of each of the four connecting pieces 17, and fastening bolts 18 are located in each of the four bolt holes. Four fastening screw holes are defined in the side of the hollow mounting base 1, and one end of each of the four fastening bolts 18 is threadedly mounted in each of the four fastening screw holes. This arrangement provides the advantage that, when the fastening bolts 18 are rotated, the fastening screw holes act in concert to secure or loosen the connecting pieces 17, thereby facilitating disassembly, assembly, and maintenance of the verticality tester 2.

[0028] In this embodiment, rubber anti-skid pads are fixed on the sides of the two fixing clamps 6 that are close to each other. The advantage of this arrangement is that the friction between the fixing clamps 6 and the gantry legs can be effectively increased by the arrangement of the rubber anti-skid pads, making the clamping more stable.

[0029] Example 2

[0030] refer to Figure 2 and Figure 3 As shown, the locking assembly includes a fixed protrusion 11 fixedly mounted on the top of the hollow mounting seat 1, a sliding hole is opened on the side of the fixed protrusion 11, and a locking rod 12 is slidably installed in the sliding hole, and a plurality of locking holes are evenly opened on the circumferential side of the control knob 8. One end of the locking rod 12 extends into one of the locking holes, and a reset unit is installed on the locking rod 12. The reset unit includes a fixing plate fixedly sleeved on the locking rod 12, and the fixing plate is located between the control knob 8 and the fixed protrusion 11. A reset spring 13 is sleeved on the locking rod 12, and the two ends of the reset spring 13 are respectively fixedly mounted on the sides of the fixed protrusion 11 and the fixing plate. The advantage of this arrangement is that when the locking rod 12 is pulled out of the locking hole, the control knob 8 can be unlocked, and the control knob 8 can be directly turned to perform disassembly and assembly operations. When the locking rod 12 is released, the elastic force of the reset spring 13 will squeeze and push the fixing plate to automatically reset, thereby driving the locking rod 12 to automatically insert into the locking hole, locking the control knob 8 and preventing it from rotating. This can effectively prevent the hollow mounting seat 1 and the verticality tester 2 from loosening and falling off due to accidental touching of the control knob 8 during the detection and calibration process, and provides good stability during use.

[0031] In this embodiment, the other end of the locking rod 12 is fixedly connected to a connecting rope 14, and the end of the connecting rope 14 is fixedly connected to a control pull ring 15. A limit post 16 that is compatible with the control pull ring 15 is fixedly installed on the top of the hollow mounting base 1, and the control pull ring 15 is located between the locking rod 12 and the limit post 16. The advantage of this arrangement is that when the control pull ring 15 is pulled, the locking rod 12 is driven to move together through the connecting rope 14 until the locking rod 12 is moved out of the locking hole and the control knob 8 is unlocked. At this time, the control pull ring 15 can be hung on the limit post 16, so that the control knob 8 will always remain unlocked. Therefore, when the control knob 8 is turned, the operator no longer needs to pull the locking rod 12 all the time, which is more convenient to use.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A positioning and calibration mechanism for large gantry inspection, comprising a hollow mounting seat (1) and a verticality detector (2), characterized in that: A bidirectional screw rod (3) is rotatably mounted on the inner walls of the two sides of the hollow mounting seat (1) that are away from each other. Two horizontal sliding holes are provided on the two sides of the hollow mounting seat (1) that are away from each other. A U-shaped shift rod (5) is slidably mounted in each of the four horizontal sliding holes. A moving plate (4) is fixedly mounted on one end of the two U-shaped shift rods (5) on the same side. Both moving plates (4) are threadedly sleeved on the bidirectional screw rod (3). A fixed plate (4) is fixedly mounted on the other end of the two U-shaped shift rods (5) on the same side. The splint (6) is provided with a vertical rotating hole at the top of the hollow mounting seat (1), a vertical rotating shaft (7) is rotatably installed in the vertical rotating hole, the bottom end of the vertical rotating shaft (7) is connected with a gear transmission unit for making the bidirectional screw rod (3) rotate synchronously, the top end of the vertical rotating shaft (7) is fixedly installed with a control knob (8), the verticality detector (2) is detachably installed on the side of the hollow mounting seat (1), and a locking component for fixing the control knob (8) is installed on the hollow mounting seat (1).

2. The large gantry detection positioning and calibration mechanism according to claim 1, characterized in that: The gear transmission unit comprises a first bevel gear (9) fixedly mounted on the bottom end of the vertical rotating shaft (7), and a second bevel gear (10) meshing with the first bevel gear (9) is fixedly sleeved on the bidirectional screw rod (3).

3. The large gantry detection positioning and calibration mechanism according to claim 1, characterized in that: The locking assembly comprises a fixed protrusion (11) fixedly mounted on the top of the hollow mounting seat (1), a sliding hole is provided on the side of the fixed protrusion (11), a locking rod (12) is slidably mounted in the sliding hole, a plurality of locking sockets are evenly provided on the circumferential side of the control knob (8), one end of the locking rod (12) extends into one of the locking sockets, and a reset unit is mounted on the locking rod (12).

4. The large gantry inspection positioning and calibration mechanism according to claim 3, characterized in that: The reset unit comprises a fixing plate fixedly sleeved on the locking rod (12); a reset spring (13) is sleeved on the locking rod (12); and two ends of the reset spring (13) are respectively fixedly mounted on the fixing protrusion (11) and the side of the fixing plate.

5. The large gantry detection positioning and calibration mechanism according to claim 4, characterized in that: The other end of the locking rod (12) is fixedly connected to a connecting rope (14), the end of the connecting rope (14) is fixedly connected to a control pull ring (15), and a limiting column (16) adapted to the control pull ring (15) is fixedly installed on the top of the hollow mounting seat (1).

6. The large gantry inspection positioning and calibration mechanism according to claim 1, characterized in that: Two connecting plates (17) are fixed on both sides of the verticality detector (2) away from each other, and bolt holes are provided on the sides of the four connecting plates (17). Fastening bolts (18) are provided in the four bolt holes. Four fastening screw holes are provided on the sides of the hollow mounting seat (1), and one end of the four fastening bolts (18) is respectively threadedly installed in the four fastening screw holes.

7. The large gantry inspection positioning and calibration mechanism according to claim 1, characterized in that: Rubber anti-slip pads are fixedly provided on the sides of the two fixed clamping plates (6) that are close to each other.

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