Crane tower head capable of preventing stress concentration

Abstract

According to the crane tower head capable of preventing stress concentration, the defects in the prior art are overcome, and the two reinforcing assemblies are installed between the cargo boom body and the balance arm body; the crane arm body and the balance arm body are provided with the isosceles trapezoid frame through the two reinforcing assemblies, the lower end of the isosceles trapezoid frame is provided with the slewing mechanism, the top of the isosceles trapezoid frame is provided with the retracting and pulling assembly, the overall structural rigidity is good, and the situation that stress concentration is likely to happen to a crane tower head is avoided; therefore, the overall structure of the crane tower head is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a crane tower head capable of preventing stress concentration. Background Art

[0002] In the prior art, the crane tower head is used to connect the lifting arm and the balance arm. The crane tower head is generally welded by multiple connecting plates and multiple connecting rods. Its overall structural rigidity is poor, which makes the crane tower head prone to stress concentration and thus causes it to be damaged, resulting in the lack of safety and stability in the overall structure of the crane tower head.

[0003] Therefore, in view of the shortcomings of the prior art, it is necessary to provide a crane tower head that prevents stress concentration to solve the shortcomings of the prior art. Utility Model Content

[0004] The utility model aims to avoid the deficiencies of the prior art and provide a crane tower head that prevents stress concentration. Two reinforcing components are installed between a boom body and a counter-arm body. An isosceles trapezoidal frame is installed on the boom body and the counter-arm body through the two reinforcing components. A slewing mechanism is installed at the lower end of the isosceles trapezoidal frame. A retracting component is installed at the top of the isosceles trapezoidal frame. The overall structural rigidity is good, which avoids the situation where stress concentration easily occurs in the crane tower head, thereby achieving a more stable overall structure of the crane tower head.

[0005] The above-mentioned purpose of the utility model is achieved through the following technical means.

[0006] Provided is a crane tower head for preventing stress concentration, comprising a boom body and a counter-arm body, wherein two reinforcing components are installed between the boom body and the counter-arm body, an isosceles trapezoidal frame is installed on the boom body and the counter-arm body through the two reinforcing components, a slewing mechanism is installed at the lower end of the isosceles trapezoidal frame, and a retracting component is installed at the top of the isosceles trapezoidal frame.

[0007] Specifically, the isosceles trapezoidal frame includes a rectangular crossbeam A, which is horizontally installed below the retracting and pulling assembly, a rectangular reinforcement plate A is fixedly installed below the rectangular crossbeam A, four webs are vertically installed below each corner point of the rectangular reinforcement plate A, and the four webs are installed on the outsides of two reinforcement assemblies, three triangular support frames are installed on the other two opposite surfaces of the isosceles trapezoidal frame, the three triangular support frames are fixedly connected, three support rods are installed inside the triangular support frames, the three support rods are respectively parallel to the three sides of the triangular support frames, square through holes are provided at both ends of the support rods, locking modules are installed inside the square through holes, a rectangular crossbeam B is horizontally installed below the web, a rectangular reinforcement plate B is fixedly installed below the rectangular crossbeam B, and the bottom of the rectangular reinforcement plate B is fixed above the installation rotating mechanism.

[0008] Specifically, the reinforcement components are installed on the two waists of the isosceles trapezoidal frame. The two reinforcement components each include two supporting columns. A vertical support plate is installed at one end of the two supporting columns. The two vertical support plates are respectively fixedly installed on the two side waists of the isosceles trapezoidal frame. The other end of the two supporting columns is installed with the same horizontal support plate. The two horizontal support plates are respectively fixedly installed at the bottom of the boom body and the balance arm body. Square through grooves are provided inside the two vertical support plates, and the two square through grooves are respectively connected to the boom body and the balance arm body.

[0009] Specifically, the rotating mechanism includes a hollow table, the upper end surface of the hollow table is installed below the rectangular reinforcement plate B, an outer gear ring is provided on the outer arc of the hollow table, an inner gear ring is slidably connected to the outer gear ring, the bottom of the inner gear ring is axially connected to the output shaft of the motor A, and two lifting assemblies are fixedly installed on the outside of the inner gear ring, and the two lifting assemblies are respectively fixedly installed on the bottom of the two horizontal support plates.

[0010] Specifically, the retracting assembly includes four retracting rollers, which are distributed in a rectangular shape. A motor B is axially connected to the bottom of the retracting rollers. A protective frame is fixedly installed above the rectangular reinforcement plate A outside the retracting rollers. Slings are installed on the retracting rollers. Two of the four slings are connected to the boom body, and the other two slings are connected to the balance arm body. Double pulleys are installed on the two slings close to the boom body, and double pulleys are installed on the two slings close to the balance arm body. The two double pulleys are respectively fixed on two opposite surfaces formed by four belly rods.

[0011] Specifically, the locking module includes two X-shaped telescopic plates, each of which includes four rectangular telescopic plates. The four rectangular telescopic plates are movably installed at the same end. A limit ring is installed in the middle of the two X-shaped telescopic plates. Four torsion springs are installed on both sides of the limit ring. The four torsion springs are respectively installed on the upper and lower sides of the two X-shaped telescopic plates. Fastening blocks are installed at the four end points of the X-shaped telescopic plates.

[0012] Specifically, the two lifting assemblies each include a hydraulic push rod body, a U-shaped support plate is installed above the hydraulic push rod body, the two U-shaped support plates are respectively fixedly installed at the bottom of the two horizontal support plates, and a locking buckle is installed on the U-shaped support plate.

[0013] The utility model aims to avoid the deficiencies of the prior art and provide a crane tower head that prevents stress concentration. Two reinforcing components are installed between a boom body and a counter-arm body. An isosceles trapezoidal frame is installed on the boom body and the counter-arm body through the two reinforcing components. A slewing mechanism is installed at the lower end of the isosceles trapezoidal frame. A retracting component is installed at the top of the isosceles trapezoidal frame. The overall structural rigidity is good, which avoids the situation where stress concentration easily occurs in the crane tower head, thereby achieving a more stable overall structure of the crane tower head. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described with reference to the accompanying drawings, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0015] Figure 1 The utility model is a schematic diagram of the overall structure of a crane tower head for preventing stress concentration.

[0016] Figure 2 The utility model is a partial structural schematic diagram of a crane tower head for preventing stress concentration.

[0017] Figure 3 The utility model is a partial structural schematic diagram of a crane tower head for preventing stress concentration.

[0018] Figure 4 The utility model is a partial structural schematic diagram of a crane tower head for preventing stress concentration.

[0019] Figure 5 The utility model is a partial structural schematic diagram of a crane tower head for preventing stress concentration.

[0020] Figure 6 The utility model is a partial structural schematic diagram of a crane tower head for preventing stress concentration.

[0021] from Figures 1 to 6 Including:

[0022] 1. The main body of the crane arm;

[0023] 2. Balance arm body;

[0024] 3. Strengthen components;

[0025] 31. Support column, 32. Vertical support plate, 33. Horizontal support plate, 34. Square through slot;

[0026] 4. Isosceles trapezoidal frame;

[0027] 41. Rectangular beam A,

[0028] 42. Rectangular reinforcement plate A;

[0029] 43. Abdominal rod;

[0030] 44. Triangular support frame;

[0031] 45. Support rod;

[0032] 46. ​​Square through hole;

[0033] 47. Locking module;

[0034] 471, X-shaped telescopic plate, 472, rectangular telescopic plate, 473, limiting ring, 474, torsion spring, 475, fastening block;

[0035] 48. Rectangular beam B;

[0036] 49. Rectangular reinforcement plate B;

[0037] 5. Rotating mechanism;

[0038] 51. Hollow platform;

[0039] 52. External gear ring;

[0040] 53. Internal gear ring;

[0041] 54. Motor A;

[0042] 55. Lifting assembly;

[0043] 551, hydraulic push rod body, 552, U-shaped support plate, 553, locking buckle;

[0044] 6. Retractable assembly;

[0045] 61. retracting roller, 62. motor B, 63. protective frame, 64. sling, 65. double pulley. DETAILED DESCRIPTION

[0046] The utility model is further described in conjunction with the following embodiments.

[0047] Example 1.

[0048] like Figure 1-6 As shown, a crane tower head for preventing stress concentration includes a boom body 1 and a balance arm body 2. The boom body 1 and the balance arm body 2 are installed with an isosceles trapezoidal frame 4 through two reinforcement components 3. A slewing mechanism 5 is installed at the lower end of the isosceles trapezoidal frame 4, and a retracting component 6 is installed at the top of the isosceles trapezoidal frame 4.

[0049] By combining and installing the reinforcement component 3 and the isosceles trapezoidal frame 4, stress concentration in the crane tower head can be avoided, thereby achieving a more stable overall structure of the crane tower head.

[0050] like Figure 1-5 As shown, the isosceles trapezoidal frame 4 includes a rectangular cross beam A 41, which is horizontally installed below the retracting assembly 6, and a rectangular reinforcing plate A 42 is fixedly installed below the rectangular cross beam A 41, and four webs 43 are vertically installed below each corner point of the rectangular reinforcing plate A 42, and the four webs 43 are installed on the outside of the two reinforcing assemblies 3, and three triangular support frames 44 are installed on the other two opposite surfaces of the isosceles trapezoidal frame 4, and the three triangular support frames 44 are fixedly connected.

[0051] The isosceles trapezoidal frame 4 formed by connecting the triangular support frame 44 and the web rods 43 below the rectangular cross beam A 41 can increase the stability of the overall structure.

[0052] like Figure 1-4 As shown, three support rods 45 are installed inside the triangular support frame 44, and the three support rods 45 are respectively parallel to the three sides of the triangular support frame 44. Square through holes 46 are provided at both ends of the support rods 45, and locking modules 47 are installed inside the square through holes 46. A rectangular cross beam B 48 is horizontally installed below the web 43, and a rectangular reinforcement plate B 49 is fixedly installed below the rectangular cross beam B 48. The lower part of the rectangular reinforcement plate B 49 is fixed above the installation rotary mechanism 5.

[0053] The close connection between the support rod 45 and the locking module 47 makes the triangular support frame 44 more stable. Meanwhile, the triangular support frame 44 is fixedly installed between the rectangular cross beam B 48 and the rectangular cross beam A 41, which can effectively ensure the stability of the overall structure.

[0054] like Figure 1-4 As shown, the reinforcement assembly 3 is installed on the two waists of the isosceles trapezoidal frame 4, and the two reinforcement assemblies 3 each include two supporting columns 31, and a vertical support plate 32 is installed at one end of the two supporting columns 31, and the two vertical support plates 32 are respectively fixedly installed on the two side waists of the isosceles trapezoidal frame 4, and the other end of the two supporting columns 31 is installed with the same horizontal support plate 33, and the two horizontal support plates 33 are respectively fixedly installed at the bottom of the boom body 1 and the balance arm body 2, and the two vertical support plates 32 are each provided with a square through groove 34, and the two square through grooves 34 are respectively connected to the boom body 1 and the balance arm body 2.

[0055] By strengthening the stable structure of the supporting columns 31 in the component 3 connecting the vertical supporting plate 32 and the horizontal supporting plate 33 and providing square through grooves 34 inside the vertical supporting plate 32, the device can be strengthened and stabilized in multiple directions, and the concentrated stress of the boom body 1 and the balance arm body 2 on the tower head can be avoided as much as possible, so as to avoid damage to the tower head.

[0056] like Figure 1-5 As shown, the rotary mechanism 5 includes a hollow platform 51, the upper end surface of the hollow platform 51 is installed below the rectangular reinforcing plate B49, an outer ring gear 52 is provided on the outer circular arc of the hollow platform 51, an inner ring gear 53 is slidably connected to the outer ring gear 52, the bottom of the inner ring gear 53 is axially connected to the output shaft of the motor A 54, and two lifting assemblies 55 are fixedly installed on the outside of the inner ring gear 53, and the two lifting assemblies 55 are respectively fixedly installed on the bottom of the two horizontal support plates 33.

[0057] The rotation can be realized by utilizing the gear ring transmission in the rotary mechanism 5 , and the lifting of the rotary mechanism 5 can be completed by utilizing the lifting assembly 55 , thereby ensuring the stability of the structure and reducing the situation of concentrated stress.

[0058] like Figure 1-6 As shown, the retracting assembly 6 includes four retracting rollers 61, and the four retracting rollers 61 are distributed in a rectangular shape. The bottom of the retracting rollers 61 is axially connected to a motor B 62, and a protective frame 63 is fixedly installed above the rectangular reinforcing plate A 42 outside the retracting rollers 61. Slings 64 are installed on the retracting rollers 61. Two of the four slings 64 are connected to the boom body 1, and the other two slings 64 are connected to the balance arm body 2. Double pulleys 65 are installed on the two slings 64 close to the boom body 1, and double pulleys 65 are installed on the two slings 64 close to the balance arm body 2. The two double pulleys 65 are respectively fixedly installed on two opposite surfaces formed by the four belly rods 43.

[0059] The lifting arm body 1 and the balancing arm body 2 can be lifted by the lifting cable 64 connected to the double pulley 65 through the pulling assembly 6, ensuring the stable support of the tower head to the lifting arm body 1 and the balancing arm body 2. At the same time, the rectangularly distributed pulling assembly 6 can ensure that stress concentration is avoided in the crane tower head.

[0060] like Figure 1-5 As shown, the locking module 47 includes two X-shaped telescopic plates 471, each of the X-shaped telescopic plates 471 includes four rectangular telescopic plates 472, and the four rectangular telescopic plates 472 are movably installed at the same end. A limit ring 473 is installed in the middle of the two X-shaped telescopic plates 471, and four torsion springs 474 are installed on both sides of the limit ring 473. The four torsion springs 474 are respectively installed on the upper and lower sides of the two X-shaped telescopic plates 471, and fastening blocks 475 are installed at the four end points of the X-shaped telescopic plate 471.

[0061] The scalability of the torsion spring 474 can effectively counteract the stress concentration, and the internal structure of the locking module 47 can avoid the concentrated stress and perform reasonable locking on the entire device.

[0062] like Figure 1-5 As shown, the two lifting assemblies 55 each include a hydraulic push rod body 551 , and a U-shaped support plate 552 is installed above the hydraulic push rod body 551 . The two U-shaped support plates 552 are respectively fixedly installed at the bottom of the two horizontal support plates 33 , and a locking buckle 553 is installed on the U-shaped support plate 552 .

[0063] By installing the lifting assembly 55 with the U-shaped support plate 552 and the hydraulic push rod body 551, the stress concentration of the tower head on the slewing mechanism 5 can be avoided, and the stability of the tower head on the slewing mechanism 5 can also be ensured.

[0064] The purpose of the utility model is to avoid the shortcomings of the prior art and provide a crane tower head that prevents stress concentration. Two reinforcing components 3 are installed between a boom body 1 and a balance arm body 2. An isosceles trapezoidal frame 4 is installed on the boom body 1 and the balance arm body 2 through the two reinforcing components 3. A slewing mechanism 5 is installed at the lower end of the isosceles trapezoidal frame 4. A retracting component 6 is installed at the top of the isosceles trapezoidal frame 4. The overall structural rigidity is good, which avoids the situation where stress concentration is easy to occur in the crane tower head, thereby achieving a more stable overall structure of the crane tower head.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the protection scope of the utility model. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A crane tower head for preventing stress concentration, comprising a boom body and a balance arm body, characterized in that: Two reinforcement components are installed between the boom body and the balance arm body, and an isosceles trapezoidal frame is installed on the boom body and the balance arm body through the two reinforcement components. A slewing mechanism is installed at the lower end of the isosceles trapezoidal frame, and a retracting component is installed on the top of the isosceles trapezoidal frame; The isosceles trapezoidal frame includes a rectangular crossbeam A, which is horizontally installed below the retracting and pulling assembly, a rectangular reinforcement plate A is fixedly installed below the rectangular crossbeam A, four webs are vertically installed below each corner point of the rectangular reinforcement plate A, and the four webs are installed on the outsides of two reinforcement assemblies, three triangular support frames are installed on the other two opposite surfaces of the isosceles trapezoidal frame, the three triangular support frames are fixedly connected, three support rods are installed inside the triangular support frames, the three support rods are respectively parallel to the three sides of the triangular support frames, square through holes are provided at both ends of the support rods, locking modules are installed inside the square through holes, a rectangular crossbeam B is horizontally installed below the web, a rectangular reinforcement plate B is fixedly installed below the rectangular crossbeam B, and the bottom of the rectangular reinforcement plate B is fixed above the installation of the rotating mechanism.

2. A crane tower head for preventing stress concentration according to claim 1, characterized in that: The two reinforcement assemblies are respectively installed on the two waists of the isosceles trapezoidal frame, and the reinforcement assemblies each include two supporting columns, a vertical support plate is installed at one end of the supporting column, and the vertical support plates are respectively fixedly installed on the two side waists of the isosceles trapezoidal frame, and a horizontal support plate is installed at the other end of the supporting column, and the horizontal support plates are respectively fixedly installed on the bottom of the boom body and the balance arm body, and square through grooves are provided inside the two vertical support plates, and the insides of the two square through grooves are respectively connected to the boom body and the balance arm body.

3. A crane tower head for preventing stress concentration according to claim 2, characterized in that: The rotating mechanism includes a hollow table, the upper end surface of the hollow table is installed below the rectangular reinforcing plate B, an outer circular arc of the hollow table is provided with an outer gear ring, an inner gear ring is slidably connected to the outer gear ring, the bottom of the inner gear ring is axially connected to the output shaft of the motor A, two lifting assemblies are fixedly installed on the outside of the inner gear ring, and the two lifting assemblies are respectively fixedly installed on the bottom of the two horizontal support plates.

4. The crane tower head for preventing stress concentration according to claim 1, characterized in that: The retracting assembly includes four retracting rollers, and the four retracting rollers are distributed in a rectangular shape. A motor B is axially connected to the bottom of the retracting rollers. A protective frame is fixedly installed above the rectangular reinforcing plate A outside the retracting rollers. Slings are installed on the retracting rollers. Two of the four slings are connected to the boom body, and the other two slings are connected to the balance arm body. Double pulleys are installed on the two slings close to the boom body, and double pulleys are installed on the two slings close to the balance arm body. The two double pulleys are respectively fixedly installed on the two opposite surfaces formed by the four belly rods.

5. The crane tower head for preventing stress concentration according to claim 1, characterized in that: The locking module includes two X-shaped telescopic plates, each of which includes four rectangular telescopic plates. The four rectangular telescopic plates are movably installed at the same end. A limit ring is installed in the middle of the two X-shaped telescopic plates. Four torsion springs are installed on both sides of the limit ring. The four torsion springs are respectively installed on the upper and lower sides of the two X-shaped telescopic plates. Fastening blocks are installed at the four end points of the X-shaped telescopic plates.

6. The crane tower head for preventing stress concentration according to claim 3, characterized in that: The two lifting assemblies each include a hydraulic push rod body, a U-shaped support plate is installed above the hydraulic push rod body, the two U-shaped support plates are respectively fixedly installed at the bottom of the two horizontal support plates, and a locking buckle is installed on the U-shaped support plate.

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