Boom device for hoisting equipment and hoisting equipment

Abstract

The utility model belongs to the technical field of engineering machinery, and particularly relates to an arm support device for hoisting equipment and the hoisting equipment, the arm support device comprises a hoisting arm, a first lug plate assembly and a second lug plate assembly, the variable-amplitude trolley is arranged on the cargo boom and can move in the axial direction of the cargo boom, and a second lug plate assembly is arranged on the variable-amplitude trolley; the locking driving piece is arranged on the cargo boom or the variable-amplitude trolley; the locking piece is connected with the locking driving piece and is used for locking or unlocking the first lug plate assembly and the second lug plate assembly under the driving of the locking driving piece, and by the adoption of the boom device, the variable-amplitude trolley can be locked to the designated position of the cargo boom, and the situation that the variable-amplitude trolley is stressed to move in the hoisting process, and consequently hoisting is unstable is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of engineering machinery, and in particular relates to an arm support device for lifting equipment and the lifting equipment. Background Art

[0002] Conventional tower cranes are divided into horizontal arm tower cranes and jib tower cranes. The horizontal arm tower crane has its boom and counter-arm kept horizontal, and the heavy objects are lifted and transported by a luffing trolley. The luffing arm tower crane lifts the materials by the hook on the tip of the boom, and the boom is rotated up and down to achieve luffing. According to the actual construction environment, the on-site staff can selectively use a luffing arm tower crane or a horizontal arm tower crane.

[0003] With the development of technology, in order to make the application range of lifting equipment wider, the lifting arm of lifting equipment is developing towards the direction of dual-purpose horizontal arm and movable arm. However, the luffing trolley on the non-horizontal lifting arm will slide downward due to gravity and cannot bear a large load. Utility Model Content

[0004] The utility model aims to provide a boom device for lifting equipment and the lifting equipment, so that the luffing trolley can lift materials on the lifting arm more stably.

[0005] In order to achieve the above-mentioned object, the utility model provides, on one hand, a boom device for a lifting device, the boom device comprising:

[0006] A lifting arm, wherein a first ear plate assembly is provided on the lifting arm;

[0007] A luffing trolley is arranged on the boom and can move along the axial direction of the boom, and a second ear plate assembly is arranged on the luffing trolley;

[0008] A locking drive member is provided on the boom or the luffing trolley;

[0009] The locking member is connected to the locking driving member and is used to lock or unlock the first ear plate assembly and the second ear plate assembly under the drive of the locking driving member.

[0010] In some embodiments, a first through hole is formed on the first ear plate assembly, and a second through hole corresponding to the first through hole is formed on the second ear plate assembly. The locking member can pass through or exit the first through hole and the second through hole at the same time under the drive of the locking drive member.

[0011] In some embodiments, the first ear plate assembly is disposed on the boom tip section of the boom, and a hook assembly is disposed on the luffing trolley.

[0012] In some embodiments, the second ear plate assembly includes a first ear plate and a second ear plate distributed in parallel and spaced apart in a transverse direction, and a second through-hole is provided on the first ear plate and the second ear plate. The arm device also includes a connecting sleeve for allowing the locking member to extend laterally, and the two ends of the connecting sleeve are respectively connected to the second through-hole on the first ear plate and the second through-hole on the second ear plate.

[0013] In some embodiments, the locking drive member is a linear drive member arranged on the lifting arm, and the arm device also includes a guide cylinder, a guide rod and a connecting plate, the guide cylinder is passed through the first ear plate assembly, the guide rod is connected to the driving end of the linear drive member, the connecting plate is arranged on the guide rod, and the locking member is passed through the connecting plate.

[0014] In some embodiments, the boom is further provided with a pressing assembly located at the bottom end of the boom and used for limiting and abutting the top end of the boom trolley.

[0015] In some embodiments, a first limiting plate extending in the transverse direction and used for limiting and abutting against the pressing assembly is disposed at the top end of the luffing trolley.

[0016] In some embodiments, a limit block is provided on the boom trolley, and a second limit plate and a third limit plate which are laterally spaced apart are provided at the bottom end of the boom, and a limit space for limiting the lateral movement of the limit block is formed between the second limit plate and the third limit plate.

[0017] In some embodiments, the boom device further comprises a buffer pad for buffering the collision between the limit block and the boom.

[0018] A second aspect of the utility model provides a lifting device, the lifting device comprising the above-mentioned boom device for lifting device.

[0019] In the above technical solution, a first ear plate assembly is provided on the lifting arm of the lifting equipment, and a second ear plate assembly is provided on the luffing trolley. The locking member can lock or unlock the first ear plate assembly and the second ear plate assembly under the driving action of the locking driving member, so that the luffing trolley can be locked by the locking member at the specified position of the lifting arm, so that the luffing trolley can lift heavy objects more stably.

[0020] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the embodiments of the present utility model and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present utility model, but do not constitute a limitation on the embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work. In the drawings:

[0022] Figure 1 It is a structural schematic diagram of the arm support device provided according to the utility model;

[0023] Figure 2 A schematic diagram of an application scenario of the arm support device provided according to an embodiment of the utility model;

[0024] Figure 3 It is a schematic diagram of the structure of the luffing trolley provided according to an embodiment of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the arm tip section of the arm support device provided according to an embodiment of the utility model;

[0026] Figure 5 It is a structural schematic diagram of a locking mechanism provided according to an embodiment of the utility model.

[0027] Description of Reference Numerals

[0028] 100 arm device 212 first ear plate

[0029] 10 Lifting arm 213 Second ear plate

[0030] 11 First ear plate assembly 214 Connecting sleeve

[0031] 111 first perforation 22 first limit plate

[0032] 12 Arm tip 23 Limit block

[0033] 13 Press down assembly 30 Lock drive

[0034] 14 Second limiting plate 40 Locking member

[0035] 15 Third limit plate 50 Guide cylinder

[0036] 16 Limit space 60 Guide rod

[0037] 20 Luffing trolley 70 connecting plate

[0038] 21 second ear plate assembly 80 buffer pad

[0039] 211 Second Perforation DETAILED DESCRIPTION

[0040] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0041] The following describes the arm support device 100 for lifting equipment according to the present utility model with reference to the accompanying drawings. Figure 1 As shown, it is a schematic diagram of the structure of the arm support device 100 provided according to the utility model; Figure 2 As shown, it is a schematic diagram of an application scenario of the arm support device 100 provided according to an embodiment of the utility model; Figure 3 FIG. 1 is a schematic diagram of the structure of the boom trolley 20 provided according to an embodiment of the utility model. The boom device 100 provided by the utility model includes:

[0042] The boom 10 is provided with a first ear plate assembly 11 .

[0043] The luffing trolley 20 is disposed on the boom 10 and can move along the axial direction of the boom 10 . The luffing trolley 20 is provided with a second ear plate assembly 21 .

[0044] The locking drive member 30 is arranged on the boom 10 or the luffing trolley 20 .

[0045] The locking member 40 is connected to the locking driving member 30 and is used to lock or unlock the first ear plate assembly 11 and the second ear plate assembly 21 under the drive of the locking driving member 30 .

[0046] The boom 10 is a bidirectionally bent metal structure in a tower crane that supports a hoisting rope, a fetching device or a luffing trolley 20. The luffing trolley 20 is a commonly used luffing structure in a flat-arm tower crane, and the luffing trolley 20 can move along the axial direction of the boom 10 to transport the hoisted goods. A first ear plate assembly 11 is provided on the boom 10, and a second ear plate assembly 21 is provided on the luffing trolley 20. When the luffing trolley 20 moves to a preset position, the positions of the first ear plate assembly 11 and the second ear plate assembly 21 correspond to each other, and the locking drive 30 can drive the locking member 40 to lock the first ear plate assembly 11 and the second ear plate assembly 21 (such as using a clamping mechanism to clamp the first ear plate assembly 11 and the second ear plate assembly 21 together, or using a pin to simultaneously penetrate the first ear plate assembly 11 and the second ear plate assembly 21 to lock the two together), so that the luffing trolley 20 is locked on the boom 10 to avoid the luffing trolley from moving along the axial direction of the boom 10 and being in an uncertain motion state, so as to facilitate the luffing trolley 20 to lift heavy objects. In addition, when the boom is in a tilted state, the locking of the luffing trolley 20 and the boom 10 is achieved by means of the locking member 40, the first ear plate assembly 11 and the second ear plate assembly 21. This can also prevent the luffing trolley 20 from sliding obliquely downward along the boom 10 under the action of gravity, causing the boom 10 to be unable to bear a large load, thereby improving the reliability and safety of the lifting equipment.

[0047] In a specific embodiment, the lifting equipment may be a tower crane with a flat arm and a movable arm. When the tower crane is in the movable arm mode, the luffing trolley 20 moves to a designated position, the first ear plate assembly 11 and the second ear plate assembly 21 are in corresponding positions, the locking drive 30 drives the locking member 40 to lock the first ear plate assembly 11 and the second ear plate assembly 21, so that the luffing trolley 20 is locked to the designated position on the boom 10, and the boom 10 is luffed by rotating up and down. When the tower crane is in the flat arm mode, the boom 10 of the tower crane is rotated to a horizontal state, the locking drive 30 drives the locking member 40 to unlock the first ear plate assembly 11 and the second ear plate assembly 21, and the luffing trolley 20 can move axially on the boom 10.

[0048] In one embodiment, a first through hole 111 is formed on the first ear plate assembly 11, and a second through hole 211 corresponding to the first through hole 111 is formed on the second ear plate assembly 21. The locking member 40 can simultaneously pass through or exit the first through hole 111 and the second through hole 211 under the driving of the locking driving member 30. The above locking structure is simple in structure, convenient in locking, and easy to control and adjust.

[0049] In one embodiment, the first ear plate assembly 11 is arranged on the arm tip 12 of the boom 10, and a hook assembly is arranged on the luffing trolley 20. The lifting equipment of the utility model can be a boom-type tower crane or a flat-arm and boom-type tower crane. When the first ear plate assembly 11 is arranged on the arm tip 12 of the boom 10, the hook assembly on the luffing trolley 20 is used to lift heavy objects, which can reduce the lifting difficulty to the greatest extent, expand the lifting range, and improve the convenience of lifting.

[0050] In one embodiment, Figure 3 As shown, the second ear plate assembly 21 includes a first ear plate 212 and a second ear plate 213 which are parallelly spaced and distributed in a transverse direction (the transverse direction in this embodiment refers to the width direction of the boom 10), and the first ear plate 212 and the second ear plate 213 are both provided with a second through hole 211. The boom device 100 also includes a connecting sleeve 214 for the locking member 40 to extend transversely, and the two ends of the connecting sleeve 214 are respectively connected to the second through hole 211 on the first ear plate 212 and the second through hole 211 on the second ear plate 213. When the locking member 40 locks the first ear plate assembly 11 and the second ear plate assembly 21, it needs to pass through the first ear plate 212, the connecting sleeve 214, the second ear plate 213 and the second ear plate assembly 21. The connecting sleeve 214 can strengthen the installation strength of the first ear plate 212 and the second ear plate 213, so that the first ear plate 212 and the second ear plate 213 are not easily deformed by force, and such a locking structure is more compact, the locking is more secure, and it is not easy to loosen.

[0051] In one embodiment, Figure 4 FIG. 1 is a schematic diagram of the structure of the arm tip section 12 of the arm support device 100 provided according to an embodiment of the utility model. Figure 5As shown, it is a schematic diagram of the structure of the locking mechanism provided according to an embodiment of the utility model, wherein the locking mechanism includes a locking driving member 30, a locking member 40, a guide rod 60, a guide cylinder 50 and a connecting plate 70. The locking driving member 30 is a linear driving member (such as a linear driving motor) arranged on the boom 10, and the boom device 100 also includes a guide cylinder 50, a guide rod 60 and a connecting plate 70. The guide cylinder 50 is penetrated on the first ear plate assembly 11, the guide rod 60 is connected to the driving end of the linear driving member, the connecting plate 70 is arranged on the guide rod 60, and the locking member 40 is penetrated on the connecting plate 70. The linear driving member can drive the locking member 40 and the guide member to move linearly, the guide cylinder 50 and the guide member cooperate to guide the linear driving member to move along the axial direction of the guide cylinder 50, and the connecting plate 70 connects the locking member 40 and the guide rod 60, so that the linear driving member can drive the locking member 40 to lock along a fixed direction. Specifically, the first ear plate assembly 11 includes a third ear plate and a fourth ear plate arranged in parallel and spaced apart, and the guide cylinder 50 is arranged between the third ear plate and the fourth ear plate. When the second ear plate assembly 21 of the variable-length carriage 20 moves to the space between the third ear plate and the fourth ear plate, the linear drive member drives the guide rod 60 and the locking member 40 to move toward the second ear plate assembly 21, so that the locking member 40 locks the first ear plate assembly 11 and the second ear plate assembly 21, wherein the guide rod 60 can make the locking member 40 move in a fixed direction to prevent the locking member 40 from moving in a direction offset and causing a locking failure. The above-mentioned locking structure of the arm device 100 can make the locking member 40 more reliable and have a lower locking error rate.

[0052] In one embodiment, Figure 1 and Figure 4 As shown, the boom 10 is also provided with a pressing assembly 13 located at the bottom of the boom 10 and used to limit the top of the luffing trolley 20. When the luffing trolley 20 is locked to a specified position with the boom 10, locking only by the locking member 40 may cause the luffing trolley 20 to work unsteadily, resulting in a lifting failure. After the luffing trolley 20 of the utility model is locked, the pressing assembly 13 of the luffing trolley 20 is abutted, which can prevent the luffing trolley 20 from tilting upward at one end when lifting heavy objects, causing an unstable lifting.

[0053] In one embodiment, Figure 3 As shown, the top of the luffing trolley 20 is provided with a first limit plate 22 extending in the transverse direction and used for limiting and abutting the pressing assembly 13. The position of the luffing trolley 20 may be offset when locked. When the offset is large, the pressing assembly 13 may not be able to abut against the luffing trolley 20. The top of the luffing trolley 20 of the utility model is provided with a first limit plate 22 extending in the transverse direction, so that the pressing assembly 13 and the luffing trolley 20 have a wider contact surface to prevent abutment misalignment.

[0054] In one embodiment, Figure 3 As shown, a limit block 23 is provided on the luffing trolley 20, and a second limit plate 14 and a third limit plate 15 are provided at the bottom end of the boom 10 and are spaced apart in a transverse direction, and a limit space 16 for limiting the transverse movement of the limit block 23 is formed between the second limit plate 14 and the third limit plate 15. When the luffing trolley 20 is locked by the locking mechanism, the limit block 23 is received in the limit space 16 to prevent the luffing trolley 20 from shaking in the transverse direction.

[0055] In one embodiment, the boom device 100 further includes a buffer pad 80 for buffering the collision between the limit block 23 and the boom 10. The buffer pad 80 can be installed on the top of the limit block 23 or on the bottom wall between the second limit plate 14 and the third limit plate 15 of the boom 10, and can play a buffering role when the limit block 23 and the boom 10 contact, reduce vibration impact, and avoid structural damage to the luffing trolley 20 and / or the boom 10.

[0056] The above-mentioned boom device 100 can fix the luffing trolley 20 at a specified position on the boom 10, so that the trolley can lift heavy objects. In addition, the utility model is also provided with a pressing assembly 13, a first limiting plate 22, a second limiting plate 14, a third limiting plate 15 and a limiting block 23, so that the luffing trolley 20 can be locked more stably at a specific position of the boom 10, and the lifting work can be performed smoothly.

[0057] In one embodiment, a lifting device is provided, and the lifting device comprises the above-mentioned boom device 100 for the lifting device.

[0058] The arm support device 100 provided by the utility model is particularly suitable for use in a tower crane with both a flat arm and a movable arm. When the tower crane is in the flat arm mode, the locking drive 30 drives the locking member 40 to unlock the first ear plate assembly 11 and the second ear plate assembly 21, so that the luffing trolley 20 can move on the boom 10 to hoist and transport goods. When the tower crane is in the movable arm mode, the locking drive 30 drives the locking member 40 to lock the first ear plate assembly 11 and the second ear plate assembly 21, so that the luffing trolley 20 is locked at the top of the boom 10 or other designated positions. The luffing trolley 20 and the pulley block and hook thereunder act as the hook of the movable arm tower crane and can be used to lift goods.

[0059] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0062] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A boom device for lifting equipment, characterized in that: The arm device (100) comprises: A lifting arm (10), wherein a first ear plate assembly (11) is provided on the lifting arm (10); A luffing trolley (20) is arranged on the boom (10) and is movable along the axial direction of the boom (10), and a second ear plate assembly (21) is provided on the luffing trolley (20); A locking drive member (30) is arranged on the boom (10) or the luffing trolley (20); A locking member (40) is connected to the locking drive member (30) and is used to lock or unlock the first ear plate assembly (11) and the second ear plate assembly (21) under the drive of the locking drive member (30).

2. The arm support device for lifting equipment according to claim 1, characterized in that: A first through hole (111) is formed on the first ear plate assembly (11), and a second through hole (211) corresponding to the first through hole (111) is formed on the second ear plate assembly (21), and the locking member (40) can simultaneously pass through or simultaneously exit the first through hole (111) and the second through hole (211) under the drive of the locking driving member (30).

3. The arm support device for lifting equipment according to claim 2, characterized in that: The first ear plate assembly (11) is arranged on the arm tip section (12) of the lifting arm (10), and a hook assembly is arranged on the luffing trolley (20).

4. The arm support device for lifting equipment according to claim 2, characterized in that: The second ear plate assembly (21) comprises a first ear plate (212) and a second ear plate (213) which are arranged in parallel and spaced apart in a transverse direction, and the first ear plate (212) and the second ear plate (213) are both provided with a second through hole (211), and the arm device (100) further comprises a connecting sleeve (214) for allowing the locking member (40) to extend transversely, and two ends of the connecting sleeve (214) are respectively connected to the second through hole (211) on the first ear plate (212) and the second through hole (211) on the second ear plate (213).

5. The arm support device for lifting equipment according to claim 2, characterized in that: The locking drive member (30) is a linear drive member arranged on the lifting arm (10), and the arm support device (100) further includes a guide cylinder (50), a guide rod (60) and a connecting plate (70), wherein the guide cylinder (50) is passed through the first ear plate assembly (11), the guide rod (60) is connected to the driving end of the linear drive member, the connecting plate (70) is arranged on the guide rod (60), and the locking member (40) is passed through the connecting plate (70).

6. The arm support device for lifting equipment according to claim 1, characterized in that: The lifting arm (10) is also provided with a pressing assembly (13) located at the bottom end of the lifting arm (10) and used for limiting and abutting the top end of the luffing trolley (20).

7. The arm support device for lifting equipment according to claim 6, characterized in that: A first limiting plate (22) is provided at the top end of the amplitude-changing trolley (20) and extends in the transverse direction and is used for limiting and abutting against the pressing assembly (13).

8. The boom device for lifting equipment according to any one of claims 1 to 7, characterized in that: The boom trolley (20) is provided with a limit block (23), and the bottom end of the lifting arm (10) is provided with a second limit plate (14) and a third limit plate (15) which are laterally spaced and distributed, and a limit space (16) for limiting the lateral movement of the limit block (23) is formed between the second limit plate (14) and the third limit plate (15).

9. The arm support device for lifting equipment according to claim 8, characterized in that: The boom device (100) further comprises a buffer pad (80) for buffering the collision between the limit block (23) and the lifting arm (10).

10. A lifting device, characterized in that: The lifting equipment comprises a boom device (100) for lifting equipment according to any one of claims 1 to 9.

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