A tower crane counterweight inside adjustment locking structure

Abstract

The utility model relates to tower crane equipment technical field especially, relates to a tower crane balance arm internal counterweight adjustment locking structure. Its technical scheme includes balance arm main part, the movable slide of balance arm main part is equipped with in, the top of balance arm main part is equipped with the movable roller one and the movable roller two, the top of slide is equipped with the movable roller three, the bottom fixed of slide is equipped with the connecting column, the locking mechanism includes the tooth plate and the cross board, the tooth plate is located the top of cross board, the top fixed of cross board is equipped with two vertical boards, the outside of two vertical boards is equipped with the protective cover, the protective cover is used for waterproof dustproof, the movable lock frame of protective cover is equipped with, the utility model discloses through the reverse tooth of two groups of locking mechanism cooperation, realizes the two -way locking of counterweight mechanism, no matter counterweight mechanism is in stillness or adjustment process, can effectively prevent accidental sliding, has improved the security and stability of tower crane operation obviously.

Description

Technical Field

[0001] This utility model relates to the field of tower crane equipment technology, and in particular to a counterweight adjustment and locking structure inside the counterweight boom of a tower crane. Background Technology

[0002] In the field of construction engineering, tower cranes are core lifting equipment, and the accuracy of the counterweight adjustment of their counterweight boom directly affects the stability and safety of the equipment's operation. As construction heights continue to increase and lifting loads become increasingly complex, tower cranes need to adjust the position of the counterweight blocks inside the counterweight boom in real time according to different working conditions to maintain the overall torque balance and avoid overturning accidents caused by counterweight imbalance. The counterweight adjustment system of the tower crane counterweight boom usually adopts a combination structure of "motor drive + brake locking". The specific working process is as follows: the transmission mechanism is driven by a servo motor or stepper motor to drive the counterweight block to slide along the guide rail inside the counterweight boom to the target position. After the position is calibrated, the counterweight block is locked and fixed by the electromagnetic brake built into the motor.

[0003] Since the braking capacity of an electromagnetic brake is directly affected by factors such as power supply stability, brake pad wear, and electromagnetic coil aging, when there is a temporary power outage or voltage fluctuation at the construction site, the electromagnetic brake may fail instantly due to power loss and cannot effectively lock the counterweight, posing a safety hazard. In view of the above reasons, this application proposes an internal counterweight adjustment and locking structure for tower crane balance boom. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing an internal counterweight adjustment and locking structure for tower crane balance booms.

[0005] The technical solution of this utility model is as follows: a counterweight adjustment and locking structure for the internal counterweight of a tower crane balance boom, comprising a balance boom body, a sliding plate movably disposed inside the balance boom body, a rotating roller one and a rotating roller two movably disposed on the top of the balance boom body, a rotating roller three movably disposed on the top of the sliding plate, a connecting column fixedly disposed at the bottom of the sliding plate, a counterweight mechanism fixedly disposed at the bottom of the connecting column, and locking mechanisms disposed on both sides of the connecting column. The locking mechanisms are used to lock the counterweight mechanism to improve equipment safety. The locking mechanism includes a toothed plate and a horizontal plate. The toothed plate is located above the horizontal plate. Two vertical plates are fixedly provided on the top of the horizontal plate. A protective cover is provided on the outside of the two vertical plates. The protective cover is used for waterproofing and dustproofing. A locking frame is movably provided inside the protective cover.

[0006] Optionally, mounting seats are provided on both sides of the first and second rollers, and a drive motor is provided on one side of each of the two sets of mounting seats. A steel cable is wound around the outer wall of the third roller, and the two ends of the steel cable are fixedly connected to the outer walls of the first and second rollers, respectively.

[0007] Optionally, the inner walls on both sides of the balance arm body are provided with slide rails, and the bottom of the slide plate is fixedly provided with two sets of guide wheels, which are movably connected to the slide rails.

[0008] Optionally, the toothed plate is provided with limiting grooves on both sides, and the inner wall of the front and back of the protective cover is provided with limiting strips. The limiting strips and limiting grooves are movably connected. The protective cover is provided with passing grooves on both sides for the toothed plate to pass through. The protective cover is provided with an inspection door on the front.

[0009] Optionally, the lock frame is located between the two vertical plates, and the two sides of the lock frame are movably connected to the two vertical plates respectively. A push rod motor and a spring are fixedly provided on the bottom inner wall of the protective cover. The output end of the push rod motor is in contact with the bottom of the lock frame, and the top of the spring is in contact with the lock frame.

[0010] Optionally, a cleaning component is fixedly provided on one side of the protective cover. The cleaning component is used to clean impurities attached to the surface of the toothed plate. The cleaning component includes two support plates, and the same cleaning plate is movably arranged above the two support plates.

[0011] Optionally, each of the two support plates is fixedly provided with an internal threaded cylinder, and each of the two internal threaded cylinders is movably provided with a threaded rod. An adjusting ring is fixedly provided on the outside of the threaded rod, and the top of each of the two threaded rods is movably connected to the bottom of the cleaning plate.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects: 1. This utility model achieves bidirectional locking of the counterweight mechanism through the counter-tooth engagement of two sets of locking mechanisms. Whether the counterweight mechanism is stationary or in the process of adjustment, it can effectively prevent accidental slippage and significantly improve the safety and stability of the tower crane during operation.

[0013] 2. This utility model, through the setting of the cleaning component, can automatically remove impurities from the tooth surface during the movement of the tooth plate, reduce wear between the lock frame and the tooth plate and ensure fitting accuracy; at the same time, the cleaning plate can be quickly disassembled and installed by simply rotating the adjustment ring, which is convenient for maintenance and replacement and extends the service life of the equipment. Attached Figure Description

[0014] Figure 1 A first-view perspective three-dimensional structural diagram of the present invention is provided; Figure 2 A second-view three-dimensional structural diagram of the present invention is provided; Figure 3 A three-dimensional schematic diagram of the locking mechanism in this utility model is provided; Figure 4 A cross-sectional view of the locking mechanism in this utility model is provided; Figure 5 A three-dimensional structural diagram of the protective cover in this utility model is provided; Figure 6 An exploded view of the cleaning component in this invention is provided.

[0015] Figure label: 1. Main body of the balance arm; 2. Skateboard; 3. Slide; 4. Guide wheel; 5. Rotary roller one; 6. Rotating roller two; 7. Rotating roller three; 8. Drive motor; 9. Connecting column; 10. Counterweight mechanism; 11. Locking mechanism; 111. Toothed plate; 112. Horizontal plate; 113. Vertical plate; 114. Protective cover; 115. Inspection door; 116. Limit bar; 117. Pass-through groove; 118. Lock frame; 119. Push rod motor; 1110. Spring; 12. Cleaning component; 121. Support plate; 122. Internal threaded cylinder; 123. Threaded rod; 124. Adjusting ring; 125. Cleaning plate. Detailed Implementation

[0016] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments.

[0017] The components of the embodiments of this disclosure, which are typically described and shown in the accompanying drawings, can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of embodiments of this disclosure provided in the drawings is not intended to limit the scope of the claimed disclosure, but merely to illustrate selected embodiments of the disclosure.

[0018] Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0019] In the description of this disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0020] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0021] Example like Figure 1-6 As shown, the present invention proposes a counterweight adjustment and locking structure for the internal counterweight of a tower crane balance boom, comprising a balance boom body 1, a sliding plate 2 movably disposed inside the balance boom body 1, slide rails 3 provided on both sides of the inner wall of the balance boom body 1, two sets of guide wheels 4 fixedly disposed at the bottom of the sliding plate 2, the guide wheels 4 and slide rails 3 being movably connected, a rotating roller 5 and a rotating roller 6 movably disposed at the top of the balance boom body 1, a rotating roller 7 movably disposed at the top of the sliding plate 2, mounting seats provided on both sides of the rotating roller 5 and the rotating roller 6, a drive motor 8 provided on one side of each of the two sets of mounting seats, a steel cable wound around the outer wall of the rotating roller 7, the two ends of the steel cable being fixedly connected to the outer walls of the rotating roller 5 and the rotating roller 6 respectively, a connecting column 9 fixedly disposed at the bottom of the sliding plate 2, a counterweight mechanism 10 fixedly disposed at the bottom of the connecting column 9, a locking mechanism 11 provided on both sides of the connecting column 9, the locking mechanism 11 being used to lock the counterweight mechanism 10, thereby improving equipment safety; The locking mechanism 11 includes a toothed plate 111 and a horizontal plate 112. The toothed plate 111 is located above the horizontal plate 112. Two vertical plates 113 are fixedly mounted on the top of the horizontal plate 112. A protective cover 114 is provided on the outside of the two vertical plates 113. Limiting grooves are provided on both sides of the toothed plate 111. Limiting strips 116 are provided on the inner walls of the front and back sides of the protective cover 114. The limiting strips 116 are movably connected to the limiting grooves. Passing grooves 117 are provided on both sides of the protective cover 114 for the toothed plate 111 to pass through. An inspection door 115 is provided on the front of the protective cover 114. The protective cover 114 is used for waterproofing. The dustproof protective cover 114 has a movable locking frame 118 inside, which is located between two vertical plates 113. The two sides of the locking frame 118 are movably connected to the two vertical plates 113 respectively. The bottom inner wall of the protective cover 114 is fixed with a push rod motor 119 and a spring 1110. The output end of the push rod motor 119 is in contact with the bottom of the locking frame 118, and the top of the spring 1110 is in contact with the locking frame 118. The components of the two locking mechanisms 11 are the same. The teeth of the locking frame 118 and the bottom of the tooth plate 111 in the two locking mechanisms 11 are opposite, which can realize bidirectional locking of the counterweight mechanism 10. A cleaning component 12 is fixedly provided on one side of the protective cover 114. The cleaning component 12 is used to clean impurities attached to the surface of the toothed plate 111. The cleaning component 12 includes two support plates 121. The same cleaning plate 125 is movably provided above the two support plates 121. The top of each of the two support plates 121 is fixedly provided with an internal threaded cylinder 122. The two internal threaded cylinders 122 are movably provided with threaded rods 123. An adjusting ring 124 is fixedly provided on the outside of the threaded rods 123. The threaded rods 123 and the internal threaded cylinders 122 can realize the quick disassembly and assembly of the cleaning plate 125, which is convenient for subsequent replacement. The top of each of the two threaded rods 123 is movably connected to the bottom of the cleaning plate 125. The cleaning component 12 can clean impurities on the bottom tooth surface of the toothed plate 111, which can reduce the wear between the lock frame 118 and the toothed plate 111, and can ensure the fitting accuracy and improve the locking stability.

[0022] In this embodiment, there is a distance between the output end of the push rod motor 119 and the lock frame 118, allowing the lock frame 118 to rotate freely. The bottom of the protective cover 114 has multiple through holes for quickly draining rainwater from the protective cover 114. When the position of the counterweight mechanism 10 needs to be adjusted, if the counterweight mechanism 10 is to be moved to the right, the push rod motor 119 on the front of the equipment is activated by the controller. The push rod motor 119 presses the lock frame 118, causing its end to separate from the toothed plate 111. The drive motor 8 and multiple rotating rollers work together to make the slide plate 2 drive the counterweight mechanism 10 to move on the balance arm body 1. The rotating roller 5, rotating roller 6, rotating roller 7 and drive motor 8 in this scheme all use the components in the publication number CN212954031U, and their working principle is the same as that in this scheme. When the counterweight mechanism 10 moves, the lock frame 118 on the back of the equipment engages with the teeth at the bottom of the toothed plate 111. When the lock frame 118 After separating from the inclined surface of the current tooth, the spring 1110 pushes the locking frame 118 to reset and lock onto another tooth, achieving one-way locking of the tooth plate 111. After adjustment, the controller starts the push rod motor 119 on the front of the equipment to retract its output end. Under the push force of the spring 1110, the locking frame 118 resets and locks onto the tooth at the bottom of the tooth plate 111. Together with the locking mechanism 11 on the back, it achieves two-way locking of the counterweight mechanism 10. When the tooth plate 111 moves, the bristles on the cleaning plate 125 fit against the tooth at the bottom of the tooth plate 111, achieving cleaning of impurities on the tooth surface. This can effectively reduce the wear between the locking frame 118 and the tooth plate 111. When replacing the cleaning plate 125, the two adjusting rings 124 are rotated counterclockwise at the same time. The two adjusting rings 124 drive the two threaded rods 123. When the threaded rods 123 are dislodged from the inner threaded cylinder 122, the cleaning plate 125 can be removed and replaced.

[0023] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A counterweight adjustment and locking structure for the internal counterweight of a tower crane counterweight boom, comprising a counterweight boom body (1), characterized in that: The balance arm body (1) is movably provided with a sliding plate (2), the top of the balance arm body (1) is movably provided with a rotating roller one (5) and a rotating roller two (6), the top of the sliding plate (2) is movably provided with a rotating roller three (7), and the bottom of the sliding plate (2) is fixedly provided with a connecting column (9). The bottom of the connecting column (9) is fixedly provided with a counterweight mechanism (10), and both sides of the connecting column (9) are provided with locking mechanisms (11). The locking mechanisms (11) are used to lock the counterweight mechanism (10) to improve the safety of the equipment. The locking mechanism (11) includes a toothed plate (111) and a horizontal plate (112). The toothed plate (111) is located above the horizontal plate (112). Two vertical plates (113) are fixedly provided on the top of the horizontal plate (112). A protective cover (114) is provided on the outside of the two vertical plates (113). The protective cover (114) is used for waterproofing and dustproofing. A locking frame (118) is movably provided inside the protective cover (114).

2. The counterweight adjustment and locking structure for the internal counterweight of a tower crane boom according to claim 1, characterized in that, Both sides of the first (5) and the second (6) are provided with mounting seats, and one side of each of the two sets of mounting seats is provided with a drive motor (8). The outer wall of the third (7) is wrapped with a steel cable, and the two ends of the steel cable are fixedly connected to the outer walls of the first (5) and the second (6) respectively.

3. The counterweight adjustment and locking structure for the internal counterweight of a tower crane boom according to claim 1, characterized in that, The inner walls on both sides of the balance arm body (1) are provided with slide rails (3), and the bottom of the slide plate (2) is fixedly provided with two sets of guide wheels (4), and the guide wheels (4) and the slide rails (3) are movably connected.

4. The counterweight adjustment and locking structure inside a tower crane counterweight boom according to claim 1, characterized in that, The toothed plate (111) is provided with limiting grooves on both sides. The inner wall of the front side and the inner wall of the back side of the protective cover (114) are provided with limiting strips (116). The limiting strips (116) and the limiting grooves are movably connected. The protective cover (114) is provided with passing grooves (117) on both sides. The passing grooves (117) allow the toothed plate (111) to pass through. The front side of the protective cover (114) is provided with an inspection door (115).

5. The counterweight adjustment and locking structure for the internal counterweight of a tower crane boom according to claim 1, characterized in that, The lock frame (118) is located between the two vertical plates (113). The two sides of the lock frame (118) are movably connected to the two vertical plates (113) respectively. The bottom inner wall of the protective cover (114) is fixedly provided with a push rod motor (119) and a spring (1110). The output end of the push rod motor (119) is in contact with the bottom of the lock frame (118), and the top of the spring (1110) is in contact with the lock frame (118).

6. The counterweight adjustment and locking structure for the internal counterweight of a tower crane boom according to claim 1, characterized in that, A cleaning component (12) is fixedly provided on one side of the protective cover (114). The cleaning component (12) is used to clean impurities attached to the surface of the toothed plate (111). The cleaning component (12) includes two support plates (121), and the same cleaning plate (125) is movably provided above the two support plates (121).

7. The internal counterweight adjustment and locking structure of a tower crane counterweight boom according to claim 6, characterized in that, The top of each of the two support plates (121) is fixedly provided with an internal threaded cylinder (122), and the two internal threaded cylinders (122) are movably provided with a threaded rod (123). An adjusting ring (124) is fixedly provided on the outside of the threaded rod (123), and the top of each of the two threaded rods (123) is movably connected to the bottom of the cleaning plate (125).

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