Tower crane lifting cross beam anti-falling limiting device

Abstract

The utility model relates to the field of tower cranes, and discloses a tower crane lifting cross beam anti-falling limiting device which comprises a cross beam body, supporting columns are fixedly connected to the top ends of the left side and the right side of the cross beam body, sensors A are fixedly connected to the left end and the right end of the top of the cross beam body, and a sensor B is fixedly connected to the inner wall of the cross beam body. A control panel is fixedly connected to the front face of the beam body, waterproof loudspeakers are fixedly connected to the left end and the right end of the front face of the beam body, a limiting assembly is arranged on the inner wall of the beam body, and a protection assembly is arranged at the top of the beam body. According to the safety device for the tower crane, the limiting assembly, the sensor A, the sensor B, the control panel and the waterproof loudspeaker are arranged, the cylindrical rod is moved to enable the safety bolt to be inserted or release the insertion effect, meanwhile, signals are detected through the sensor A and the sensor B, the waterproof loudspeaker gives out sound to remind workers, and therefore the safety of the tower crane is improved.

Description

Technical Field

[0001] The utility model relates to the field of tower cranes, in particular to a tower crane lifting beam anti-dropping limiting device. Background Art

[0002] Tower crane is a common lifting machinery used on construction sites, usually used for lifting and moving heavy objects on construction sites. As an important mechanical equipment on construction sites, tower crane provides indispensable support for modern construction projects with its powerful lifting capacity, flexible operation and efficient operation capabilities.

[0003] The tower crane lifting beam refers to a specially designed beam structure used to support and connect the main part of the tower crane so that the tower body can be lifted or the height adjusted when necessary. This beam is generally located at the top of the tower crane, vertically connected to the tower body, and realizes the lifting and lowering function of the tower body through a specially designed lifting system.

[0004] Considering that the existing tower crane lifting beam is usually used to achieve the function of limiting and preventing it from falling off by plugging the safety pin into the standard step hole, and since the safety pin needs to be manually plugged in by the staff, it is easy to cause the safety pin to not be completely plugged into the step hole when the staff operates improperly or carelessly, thereby causing safety problems in the tower crane. Therefore, a tower crane lifting beam anti-falling limit device is proposed to solve the above problem. Utility Model Content

[0005] In order to remedy the above deficiencies, the utility model provides a tower crane lifting beam anti-detachment limit device, which aims to improve the problem in the prior art that the safety pin needs to be manually plugged in by the staff, which may easily cause the safety pin to fail to be fully plugged in with the step hole when the staff operates improperly or is careless, thereby causing safety problems in the tower crane.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a tower crane lifting beam anti-drop limit device, comprising a beam body, the tops of the left and right sides of the beam body are fixedly connected with support columns, the left and right ends of the top of the beam body are fixedly connected with sensors A, the inner wall of the beam body is fixedly connected with a sensor B, the front of the beam body is fixedly connected with a control panel, the left and right ends of the front of the beam body are fixedly connected with waterproof speakers, the inner wall of the beam body is provided with a limit component, and the top of the beam body is provided with a protective component;

[0007] The limiting assembly includes a safety pin, the left end of which is hinged with a hinged rod, the bottom end of which is hinged with a cylindrical rod, the outer wall of the cylindrical rod is fixedly connected with a fixing plate, the top of the fixing plate is fixedly elastically connected to the top of the inner wall of the beam body through a reset spring, and the inner wall of the beam body is fixedly connected with a fixing column.

[0008] As a further description of the above technical solution:

[0009] The protective component includes a baffle, a slide groove is opened at the top right end of the beam body, the inner wall of the slide groove is slidably connected with a dust cover, the inner wall of the top right end of the beam body is elastically connected with a block through a limit spring, and the front bottom end of the dust cover is fixedly connected with a buckle.

[0010] As a further description of the above technical solution:

[0011] The sensor A is electrically connected to the control panel, the sensor B is electrically connected to the control panel, the control panel is electrically connected to the waterproof speaker, the outer periphery of the safety pin penetrates and is slidably connected to the right inner wall of the beam body, and the outer periphery of the cylindrical rod penetrates and is slidably connected to the bottom right inner wall of the beam body.

[0012] As a further description of the above technical solution:

[0013] The inner wall of the bottom end of the cylindrical rod is elastically connected with a wedge block through a spring, and the right end of the bottom of the beam body is fixedly connected with a sleeve, and the outer wall of the sleeve is provided with a slot.

[0014] As a further description of the above technical solution:

[0015] One end of the return spring is fixedly connected to the inner wall of the beam body, and the other end of the return spring is fixedly connected to the top of the fixing plate. The inner wall of the fixing plate is slidably connected to the outer periphery of the fixing column.

[0016] As a further description of the above technical solution:

[0017] The bottom of the baffle is fixedly connected to the top right end of the beam body, the inner wall of the dust cover is plugged into the outer periphery of the baffle, one end of the limit spring is fixedly connected to the inner wall of the top right end of the beam body, and the other end of the limit spring is fixedly connected to the bottom of the block.

[0018] As a further description of the above technical solution:

[0019] The outer wall of the clamping block is slidably connected with the inner wall of the top right end of the beam body, and the outer wall of the clamping block is clamped with the inner wall of the buckle.

[0020] As a further description of the above technical solution:

[0021] The outer wall of the cylindrical rod is slidably connected to the inner wall of the sleeve, one end of the spring is fixedly connected to the inner wall of the bottom end of the cylindrical rod, the other end of the spring is fixedly connected to the outer wall of the wedge block, the outer wall of the wedge block is slidably connected to the inner wall of the bottom end of the cylindrical rod, and the outer wall of the wedge block is clamped with the inner wall of the slot.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, by setting a limit position component, sensor A, sensor B, control panel and waterproof speaker, the cylindrical rod is moved so that the hinged rod drives the safety pin to move, thereby enabling the safety pin to be plugged in or unplugged. At the same time, the position signals of the support column and the safety pin are fed back to the control panel through sensor A and sensor B. The feedback signal is analyzed and processed through the control panel, and the final signal is transmitted to the waterproof speaker, which emits a sound to remind the staff, thereby improving the safety of the tower crane.

[0024] 2. In the present invention, a protective component is provided and the dust cover and the baffle are plugged together, so that the dust cover and the baffle can protect the sensor A and prevent dust from affecting the service life and use effect of the sensor A. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a tower crane lifting beam anti-dropping limit device proposed by the utility model;

[0026] Figure 2 This is a cross-beam main body cross-sectional structure diagram of a tower crane top-lifting cross-beam anti-dropping limiting device proposed by the utility model;

[0027] Figure 3 This is a schematic diagram of the split structure of the crossbeam main body of a tower crane top-lifting crossbeam anti-dropping limiting device proposed by the utility model;

[0028] Figure 4 The utility model provides a tower crane top lifting beam anti-drop limit device Figure 2 The enlarged structural diagram of part A in the middle;

[0029] Figure 5 This is a schematic cross-sectional view of the dust cover of a tower crane lifting beam anti-dropping limiting device proposed by the utility model;

[0030] Figure 6 The utility model is a schematic diagram of the cylindrical rod split structure of the tower crane top lifting beam anti-dropping limit device.

[0031] Legend:

[0032] 1. Beam body; 2. Control panel; 3. Waterproof speaker; 4. Support column; 5. Sensor A; 6. Sensor B; 7. Limiting assembly; 71. Safety latch; 72. Articulated rod; 73. Fixed plate; 74. Cylindrical rod; 75. Fixed column; 76. Reset spring; 77. Wedge block; 78. Spring; 79. Sleeve; 8. Protection assembly; 81. Baffle; 82. Dust cover; 83. Block; 84. Limiting spring; 85. Buckle. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a tower crane lifting beam anti-slip limit device, including a beam body 1, the tops of the left and right sides of the beam body 1 are fixedly connected with support columns 4, and the support columns 4 are symmetrically distributed in two groups. By plugging the support columns 4 into the steps of the standard section of the tower crane, the beam body 1 can be supported, so that the lifting effect can be achieved. Sensors A5 are fixedly connected to the left and right ends of the top of the beam body 1, and the sensors A5 are symmetrically distributed in two groups. Sensors B6 are fixedly connected to the inner wall of the beam body 1, and the sensors B6 are symmetrically distributed in two groups. Through the sensors B6, the front of the beam body 1 is fixedly connected with a control The control panel 2 and the left and right ends of the front side of the beam body 1 are fixedly connected with waterproof speakers 3. There are two groups of waterproof speakers 3 symmetrically distributed. The prompt sound emitted by the waterproof speakers 3 can remind the staff whether the support column 4 and the safety pin 71 are fully engaged. The inner wall of the beam body 1 is provided with a limit assembly 7. Through the limit assembly 7, it is convenient for the staff to control the movement of the safety pin 71, so as to facilitate the plugging or unplugging of the safety pin 71. The top of the beam body 1 is provided with a protective assembly 8. Through the protective assembly 8, it is convenient to protect the sensor A5, so that the sensor A5 can be dustproof when not in use.

[0035] Reference Figure 2 and Figure 4The limit assembly 7 includes a safety latch 71, and the safety latch 71 is symmetrically distributed in two groups. By plugging the safety latch 71 into the step hole of the standard section of the tower crane, the crossbeam body 1 has a limit and anti-falling effect. The left end of the safety latch 71 is hinged with a hinged rod 72, and the hinged rod 72 is symmetrically distributed in two groups. Through the movement effect of the hinged rod 72, the safety latch 71 is driven to move. The bottom end of the hinged rod 72 is hinged with a cylindrical rod 74, and the cylindrical rod 74 is symmetrically distributed in two groups. The outer The wall is fixedly connected with a fixing plate 73, and the fixing plates 73 are symmetrically distributed in two groups. The top of the fixing plate 73 is elastically fixedly connected to the top of the inner wall of the beam body 1 through a reset spring 76. The elastic force of the reset spring 76 ensures that the fixing plate 73 always keeps sliding downward without being affected by external forces. The inner wall of the beam body 1 is fixedly connected with a fixing column 75, and the fixing columns 75 are symmetrically distributed in two groups. The fixing columns 75 guide the fixing plates 73 to prevent the fixing plates 73 from deflecting when moving.

[0036] Reference Figure 3 and Figure 5 The protection component 8 includes a baffle 81. The baffle 81 and the dust cover 82 are symmetrically distributed in two groups to protect the two groups of sensors A5 respectively. A slide groove is provided at the top right end of the beam body 1. The slide groove plays a guiding and limiting role for the dust cover 82 to prevent the dust cover 82 from deviating during movement. The inner wall of the slide groove is slidably connected with the dust cover 82. The dust cover 82 plays a dust-proof role for the sensor A5 to prevent dust from affecting the normal use of the sensor A5. The inner wall of the top right end of the beam body 1 is elastically connected with a clamping block 83 through a limiting spring 84. Through the elastic force of the limiting spring 84, the clamping block 83 always maintains a clamping effect with the buckle 85 when not subjected to external force, thereby limiting the dust cover 82. The front bottom end of the dust cover 82 is fixedly connected with a buckle 85, which is clamped with the clamping blocks 83 at different positions through the buckle 85, thereby limiting the dust cover 82 at different positions.

[0037] Reference Figure 1 and Figure 2, sensor A5 is electrically connected to the control panel 2, and through the sensor A5, the position signal of the support column 4 is detected, and the detection signal is fed back to the control panel 2, the sensor B6 is electrically connected to the control panel 2, and the position signal of the safety pin 71 is detected, and the detection signal is fed back to the control panel 2, the control panel 2 is electrically connected to the waterproof speaker 3, and the signals fed back by the sensors A5 and B6 are analyzed and processed through the control panel 2, and the opening or closing of the waterproof speaker 3 can be controlled, the outer periphery of the safety pin 71 penetrates and is slidably connected to the right inner wall of the beam body 1, and the sliding effect of the safety pin 71 enables the safety pin 71 to be plugged in or unplugged from the pedal hole of the standard section of the tower crane, the outer periphery of the cylindrical rod 74 penetrates and is slidably connected to the inner wall of the bottom right end of the beam body 1, and the sliding effect of the cylindrical rod 74 drives the hinged rod 72 to move.

[0038] Reference Figure 2 and Figure 6 The inner wall of the bottom end of the cylindrical rod 74 is elastically connected to a wedge block 77 through a spring 78. Through the elastic force of the spring 78, the wedge block 77 always maintains a clamping effect with the clamping slot when not affected by external force, thereby limiting the cylindrical rod 74 and keeping the safety pin 71 fixed. The right end of the bottom of the beam body 1 is fixedly connected to a sleeve 79. There are two groups of sleeves 79 symmetrically distributed, and a clamping slot is opened on the outer wall of the sleeve 79.

[0039] Reference Figure 2 and Figure 4 One end of the return spring 76 is fixedly connected to the inner wall of the beam body 1, and the other end of the return spring 76 is fixedly connected to the top of the fixing plate 73. The fixing effect of the return spring 76 prevents the return spring 76 from falling off. The inner wall of the fixing plate 73 is slidably connected to the outer periphery of the fixing column 75. The sliding effect of the fixing plate 73 drives the cylindrical rod 74 to move vertically.

[0040] Reference Figure 1 and Figure 5The bottom of the baffle 81 is fixedly connected to the top right end of the beam body 1, and the baffle 81 is fixedly connected to prevent the baffle 81 from falling off. The inner wall of the dust cover 82 is plugged into the outer periphery of the baffle 81. The plugging effect of the dust cover 82 and the baffle 81 can protect the surroundings of the sensor A5. One end of the limit spring 84 is fixedly connected to the inner wall of the top right end of the beam body 1, and the other end of the limit spring 84 is fixedly connected to the bottom of the block 83. The fixing effect of the limit spring 84 keeps the block 83 fixed to prevent the block 83 from falling off. The outer wall of the block 83 is slidably connected to the inner wall of the top right end of the beam body 1. The sliding effect of the block 83 makes the block 83 and the buckle 85 engage or release the engagement effect. The outer wall of the block 83 is engaged with the inner wall of the buckle 85. The engagement effect of the block 83 and the buckle 85 allows the beam body 1 to limit the dust cover 82.

[0041] Reference Figure 6 The outer wall of the cylindrical rod 74 is slidably connected to the inner wall of the sleeve 79, one end of the spring 78 is fixedly connected to the inner wall of the bottom end of the cylindrical rod 74, and the other end of the spring 78 is fixedly connected to the outer wall of the wedge block 77. The fixing effect of the spring 78 keeps the wedge block 77 fixed to prevent the wedge block 77 from falling off. The outer wall of the wedge block 77 is slidably connected to the inner wall of the bottom end of the cylindrical rod 74. The sliding effect of the wedge block 77 makes the wedge block 77 engage or release the engagement with the slot. The outer wall of the wedge block 77 engages with the inner wall of the slot. The engagement effect of the wedge block 77 and the slot makes the sleeve 79 limit the cylindrical rod 74.

[0042] Working principle: When the staff needs to increase the standard section of the tower crane for jacking, the staff controls the external hydraulic rod on the beam body 1 to drive the beam body 1 to move. When the beam body 1 moves to the specified position, the support column 4 is engaged with the standard section step. At this time, the block 83 is pressed to release the engagement effect of the block 83 with the buckle 85, and at the same time release the limiting effect of the dust cover 82. The dust cover 82 is slid along the inner wall of the slide groove toward the front direction of the beam body 1, and the sensor A5 is turned on. The distance between the support column 4 and the standard section step is detected by the sensor A5, and the signal is fed back to the control panel 2. The control panel 2 analyzes the signal and feeds back to the waterproof speaker 3. When the support column 4 is fully engaged with the step, the sensor A5 detects that the distance is the minimum, so the waterproof speaker 3 does not emit a prompt sound. When the distance detected by the sensor A5 is not the minimum, the waterproof speaker 3 will emit a prompt sound to remind the staff to check.

[0043] When the support column 4 is connected, the staff pushes the cylindrical rod 74 upward, so that the cylindrical rod 74 drives the hinged rod 72 to move, and the hinged rod 72 drives the safety pin 71 to move, so that the safety pin 71 is plugged into the standard pedal hole, thereby limiting the position and preventing the crossbeam body 1 from falling off. At this time, the sensor B6 can detect the distance position of the safety pin 71, thereby feeding back the signal to the control panel 2, and then prompting through the waterproof speaker 3. At the same time, the wedge block 77 on the cylindrical rod 74 is connected with the slot under the elastic force of the spring 78, limiting the cylindrical rod 74, so that the safety pin 71 remains fixed.

[0044] The locking cam 73 is engaged with the locking cam 75 and the retaining cam 76 is engaged with the locking cam 77. When the locking cam 73 is engaged, the locking cam 73 is engaged with the locking cam 77 and the retaining cam 76 is engaged with the locking cam 77.

[0045] 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 substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tower crane lifting beam anti-dropping and limiting device, comprising a beam body (1), characterized in that: The top ends of the left and right sides of the cross beam body (1) are fixedly connected to support columns (4), the left and right ends of the top of the cross beam body (1) are fixedly connected to sensors A (5), the inner wall of the cross beam body (1) is fixedly connected to a sensor B (6), the front of the cross beam body (1) is fixedly connected to a control panel (2), the left and right ends of the front of the cross beam body (1) are fixedly connected to waterproof speakers (3), the inner wall of the cross beam body (1) is provided with a limit assembly (7), and the top of the cross beam body (1) is provided with a protective assembly (8); The limit assembly (7) comprises a safety pin (71), the left end of the safety pin (71) is hinged with a hinge rod (72), the bottom end of the hinge rod (72) is hinged with a cylindrical rod (74), the outer wall of the cylindrical rod (74) is fixedly connected with a fixing plate (73), the top of the fixing plate (73) is fixedly elastically connected to the top of the inner wall of the beam body (1) through a return spring (76), and the inner wall of the beam body (1) is fixedly connected with a fixing column (75).

2. The tower crane lifting beam anti-drop limit device according to claim 1 is characterized in that: The protection component (8) includes a baffle (81), a slide groove is provided at the top right end of the beam body (1), a dust cover (82) is slidably connected to the inner wall of the slide groove, a clamping block (83) is elastically connected to the inner wall of the top right end of the beam body (1) via a limit spring (84), and a buckle (85) is fixedly connected to the front bottom end of the dust cover (82).

3. The tower crane lifting beam anti-drop limit device according to claim 1 is characterized in that: The sensor A (5) is electrically connected to the control panel (2), the sensor B (6) is electrically connected to the control panel (2), the control panel (2) is electrically connected to the waterproof speaker (3), the outer periphery of the safety pin (71) penetrates and is slidably connected to the right inner wall of the beam body (1), and the outer periphery of the cylindrical rod (74) penetrates and is slidably connected to the bottom right inner wall of the beam body (1).

4. The tower crane lifting beam anti-drop limit device according to claim 1 is characterized in that: The inner wall of the bottom end of the cylindrical rod (74) is elastically connected to a wedge block (77) via a spring (78), and the right end of the bottom of the crossbeam body (1) is fixedly connected to a sleeve (79), and a slot is formed on the outer wall of the sleeve (79).

5. The tower crane lifting beam anti-drop limit device according to claim 1 is characterized in that: One end of the return spring (76) is fixedly connected to the inner wall of the crossbeam body (1), and the other end of the return spring (76) is fixedly connected to the top of the fixing plate (73). The inner wall of the fixing plate (73) is slidably connected to the outer periphery of the fixing column (75).

6. The tower crane lifting beam anti-drop limit device according to claim 2 is characterized in that: The bottom of the baffle (81) is fixedly connected to the top right end of the beam body (1), the inner wall of the dust cover (82) is plugged into the outer periphery of the baffle (81), one end of the limit spring (84) is fixedly connected to the inner wall of the top right end of the beam body (1), and the other end of the limit spring (84) is fixedly connected to the bottom of the block (83).

7. The tower crane lifting beam anti-drop limit device according to claim 2 is characterized in that: The outer wall of the clamping block (83) is slidably connected to the inner wall of the top right end of the crossbeam body (1), and the outer wall of the clamping block (83) is clamped to the inner wall of the buckle (85).

8. The tower crane lifting beam anti-drop limit device according to claim 4 is characterized in that: The outer wall of the cylindrical rod (74) is slidably connected to the inner wall of the sleeve (79), one end of the spring (78) is fixedly connected to the inner wall of the bottom end of the cylindrical rod (74), the other end of the spring (78) is fixedly connected to the outer wall of the wedge block (77), the outer wall of the wedge block (77) is slidably connected to the inner wall of the bottom end of the cylindrical rod (74), and the outer wall of the wedge block (77) is clamped with the inner wall of the slot.

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