Damping device for a tower crane

Abstract

The utility model relates to a damping device for tower crane, include: lower casing (1), slide and connect on the slide plate (3) of lower casing (1) on, the slide plate (3) top is connected with upper pressing plate (4), upper pressing plate (4) lower part elasticity is connected with lower spring groove (7), the lower casing (1) lower part is provided with support platform (102), support platform (102) has conical support surface, lower spring groove (7) bottom is provided with conical pressure surface, and the conical support surface and conical pressure surface between be provided with damping ring (8), damping ring (8) is including multistage rubber damping mechanism that sets gradually, rubber damping mechanism all include first rubber ring (801) and first metal sheet (802) that set up, wherein first metal sheet (802) on interval be provided with a plurality of baffle that protrude into first rubber ring (801) inside, this device can effectively reduce the vibration of tower crane cab.

Description

Technical Field

[0001] This utility model relates to a shock absorption device, specifically a shock absorption device for tower cranes. Background Technology

[0002] The tower crane operator's cab is a crucial component in construction machinery, ensuring the safety of operators. All tower crane operations are performed inside the cab. Currently, existing operator cabs are directly fixed to the turntable mechanism, which in turn connects directly to the tower crane's lifting tower. This exposes the cab to constant external vibration, which, over time, affects operator comfort. Therefore, it is necessary to install a vibration damping mechanism at the bottom of the tower crane operator's cab. Existing technology CN215854711U discloses a vibration damping mechanism for tower crane operator's cabs, specifically a mechanism including a base and a damping component connected to the base. The damping component consists of a fixed plate, a sliding plate, double springs, and a ceramic friction inner layer, fixed by a threaded rod and nut. Vibration damping is achieved through the springs and ceramic friction. However, in actual use, the excessive elastic force of the double springs, combined with the inner friction layer, can lead to ineffective absorption and dispersion of vibration energy during larger vibrations, resulting in poor vibration damping performance. Utility Model Content

[0003] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a device that can be applied to the base of a tower crane cab to reduce the vibration of the tower crane cab.

[0004] The technical solution of this utility model is as follows:

[0005] A shock-absorbing device for tower cranes, characterized in that it includes:

[0006] The lower housing (1) is slidably connected to the sliding plate (3) on the lower housing (1);

[0007] The top of the sliding plate (3) is connected to an upper pressure plate (4), and the lower part of the upper pressure plate (4) is elastically connected to a lower spring groove (7);

[0008] The lower housing (1) is provided with a support platform (102) at its lower part, and the support platform (102) has a conical support surface;

[0009] The bottom of the lower spring groove (7) is provided with a conical pressure surface, and a shock-absorbing ring (8) is provided between the conical support surface and the conical pressure surface;

[0010] The shock-absorbing ring (8) includes a multi-stage rubber shock-absorbing mechanism arranged in sequence. Each rubber shock-absorbing mechanism includes a first rubber ring (801) and a first metal plate (802) arranged vertically. The first metal plate (802) is provided with a plurality of partitions that extend into the first rubber ring (801) at intervals.

[0011] Furthermore, the multi-stage rubber damping mechanism is three-stage, in which the resilience of the rubber rings increases sequentially from top to bottom. This is to increase the deformation capacity of the rubber sequentially, and the greater the deformation, the stronger the damping capacity.

[0012] Furthermore, the angle between the partition and the first metal plate (802) is 30°-60°.

[0013] Furthermore, the upper pressure plate (4) is connected to an upper spring groove (5) at its lower part, and a spring (6) is connected between the upper spring groove (5) and the lower spring groove (7).

[0014] Furthermore, a screw (403) is provided in the middle of the upper pressure plate (4) and is fixed by a first nut (401) and a second nut (402) provided above and below; the screw (403) is threadedly connected to the upper spring groove (5).

[0015] Furthermore, a sliding sleeve (101) is provided at the bottom of the lower housing (1), and a lower guide post (701) is provided at the bottom of the lower spring groove (7), and the lower guide post (701) is slidably connected to the inside of the sliding sleeve (101).

[0016] Furthermore, the upper inner wall of the lower housing (1) is connected to a friction layer (2), and the outer wall of the sliding plate (3) is rubbed against the inner wall of the friction layer (2).

[0017] Furthermore, the sliding plate (3) is also provided with a sliding groove (301), and one end of a fixing member (201) is fixedly provided on the lower housing (1), and the other end of the fixing member (201) engages with the sliding groove (301).

[0018] Furthermore, the outer wall of the friction layer (2) is provided with a plurality of protruding fasteners (202), and the lower housing (1) is provided with a groove for installing the fasteners (202).

[0019] Furthermore, the partition extends into the rubber ring to a height that is half the height of the rubber ring.

[0020] Furthermore,

[0021] By means of the above solution, this utility model has at least the following advantages:

[0022] (1) A multi-stage rubber damping structure is adopted, in which each stage includes a first rubber ring and a first metal plate arranged vertically. Multiple baffles extending into the first rubber ring (801) are spaced apart on the upper surface of the first metal plate. This design distributes pressure to multiple force release areas through the baffles, with each area sharing the pressure, thereby reducing the pressure in each area and effectively preventing excessive pressure concentration in a single local area without the baffles, thus avoiding the problem of localized rubber tearing. Furthermore, the three-stage rubber damping structure further improves the damping effect, making the damping more stable and effective.

[0023] (2) Adjustable spring height: The spring height can be adjusted by connecting an upper spring groove to the lower part of the upper pressure plate and by using a screw and a first nut and a second nut located on the upper and lower surfaces of the upper pressure plate. The damping effect can be adjusted according to actual needs to adapt to different working environments and load conditions.

[0024] (3) The design of the conical support surface and the conical pressure surface: A support platform is set at the bottom of the lower shell. The support platform includes an annular base and a conical support surface located on the self-supporting surface. A shock-absorbing ring is set between the conical support surface and the conical pressure surface. This design makes the upper and lower surfaces of the shock-absorbing ring (8) fit the conical support surface and the conical pressure surface, and can form a good contact with both of them, so that the shock absorption of the entire device is limited to vertical displacement, rather than horizontal movement.

[0025] (4) Sliding friction and energy consumption: The friction layer and the sliding plate are connected by sliding friction, which can consume some energy during the damping process and further enhance the damping effect.

[0026] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0027] Figure 1 This is the main view of the structure of this utility model;

[0028] Figure 2 This is a side view of the present invention;

[0029] Figure 3 This is a cross-sectional schematic diagram of the main view of this utility model;

[0030] Figure 4 This is a partial schematic diagram of the cross-section of this utility model;

[0031] In the picture:

[0032] 1-Lower housing; 101-Sliding sleeve; 102-Support platform; 2-Friction layer; 201-Fixing component; 202-Snap fastener; 3-Sliding plate; 301-Sliding groove; 4-Upper pressure plate; 401-First nut; 402-Second nut; 403-Screw; 5-Upper spring groove; 6-Spring; 7-Lower spring groove; 701-Lower guide post; 8-Shock-absorbing ring; 801-First rubber ring; 802-First metal plate. Detailed Implementation

[0033] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0034] See Figures 1-4 This utility model relates to a shock-absorbing device for tower cranes. The shock-absorbing device is installed at the bottom of the tower crane cab, usually at the four corners of the bottom of the tower crane cab, to reduce the vibration of the tower crane cab during operation.

[0035] The shock absorption device of this utility model specifically includes a lower housing 1, which is a cylindrical sleeve with an opening. A friction layer 2 is connected to the upper half of the lower housing 1. The friction layer 2 is annular, and a fastener 202 is provided on the outer wall of the friction layer 2. The fastener 202 is usually circular, but can also be designed as an ellipse or a regular polygon. At the same time, a corresponding opening is provided on the lower housing 1, so that the friction layer 2 can be installed into the interior of the lower housing 1. In the specific connection, glue is usually applied to the outer wall of the friction layer 2 to make the friction layer 2 tightly connected to the lower housing 1.

[0036] A sliding plate 3 is slidably connected within the friction layer 2. The sliding plate 3 is annular, and a sliding groove 301 is provided on both the left and right sides of the sliding plate 3. The sliding groove 301 is connected to the lower housing 1 through a fixing member 201. Specifically, one end of the fixing member 201 is fixedly provided on the lower housing 1, and the other end of the fixing member 201 engages with the sliding groove 301.

[0037] The top of the sliding plate 3 is connected to the upper pressure plate 4. The upper pressure plate 4 is usually welded to the top of the sliding plate 3. The sliding plate 4 serves as the top of the sliding plate 3 and also supports the installation of the tower crane cab. The lower part of the upper pressure plate 4 is connected to the upper spring groove 5. Specifically, a screw 403 is set in the middle of the upper pressure plate 4 and is fixed by the first nut 401 and the second nut 402 located on the upper and lower surfaces of the upper pressure plate 4. The screw 403 is threaded to the upper spring groove 5. The height of the top of the screw 403 relative to the surface of the upper pressure plate 4 can be adjusted by adjusting the rotation of the two nuts 401. The relative height between the spring groove 5 and the bottom of the screw 403 can also be adjusted by rotating the spring groove 5.

[0038] The upper spring groove 5 engages with the upper end of the spring 6, and the lower end of the spring 6 engages with the upper part of the lower spring groove 7. The lower spring groove 7 comprises three parts: an upper spring mounting groove, a conical main body in the middle, and a lower cylindrical guide post 701. The lower part of the main body has a conical pressure surface.

[0039] A sliding sleeve 101 is also provided at the bottom of the lower housing 1, and the lower guide post 701 is slidably connected to the inside of the sliding sleeve 101, so as to ensure that the entire stroke of the lower spring groove 7 is up and down.

[0040] A support platform 102 is also provided at the bottom of the lower housing 1, outside the sliding sleeve 101. The support platform 102 includes an annular base and a conical support surface located on the base.

[0041] A damping ring 8 is provided between the conical support surface and the conical pressure surface. The upper and lower surfaces of the damping ring 8 are shaped to fit the conical support surface and the conical pressure surface, and can form a good contact with both.

[0042] The damping ring 8 comprises a multi-stage rubber damping mechanism arranged sequentially. Each stage of the rubber damping mechanism includes a first rubber ring 801 and a first metal plate 802 arranged vertically. The upper surface of the first metal plate 802 is provided with multiple partitions extending into the first rubber ring 801. The function of these partitions is to extend into the rubber ring and, when pressure is received on the upper part of the rubber, to separate the received pressure through the partitions, forming multiple force release areas. Each force release area shares the received pressure, thereby reducing the pressure in each area and preventing excessive pressure concentration in a single local area without the action of the partitions, which could lead to localized tearing of the rubber.

[0043] To better prevent rubber tearing, this device is equipped with a three-stage rubber shock absorption structure. To prevent the metal plate and the lower rubber ring from falling off, a partition extending into the lower rubber ring is also provided at the bottom of the metal plate. The lower partition and the upper partition can be arranged in parallel, or a corresponding groove can be provided on the surface of the support platform 102 to install the lower partition on the bottommost metal plate.

[0044] The angle between the partition and the first metal plate 802 is 30°-60°. This angle can be either the angle with the outward extending direction of the first metal plate or the angle with the inward extending direction of the first metal plate. The attached diagram in the specification illustrates the angle with the outward extending direction. The difference between these two angles is that the outward extending direction angle provides better support for the rubber ring, but there is a risk of tearing at the point where the end of the partition contacts the rubber. The inward extending direction angle prevents tearing at the point where the end of the partition contacts the rubber.

[0045] When this device is in use, the upper pressure plate 4 is subjected to external pressure, which is transmitted to the lower spring groove 7 at the bottom through the spring. The lower spring groove 7 will squeeze the lower shock-absorbing ring 8, and the shock-absorbing ring 8 can achieve the shock absorption effect. At the same time, the friction layer 2 will generate sliding friction with the sliding plate 3, which can also consume energy and achieve the shock absorption effect.

[0046] The advantages of this utility model are as follows:

[0047] (1) A multi-stage rubber damping structure is adopted, in which each stage includes a first rubber ring and a first metal plate arranged vertically. Multiple baffles extending into the first rubber ring (801) are spaced apart on the upper surface of the first metal plate. This design distributes pressure to multiple force release areas through the baffles, with each area sharing the pressure, thereby reducing the pressure in each area and effectively preventing excessive pressure concentration in a single local area without the baffles, thus avoiding the problem of localized rubber tearing. Furthermore, the three-stage rubber damping structure further improves the damping effect, making the damping more stable and effective.

[0048] (2) Adjustable spring height: The spring height can be adjusted by connecting an upper spring groove to the lower part of the upper pressure plate and by using a screw and a first nut and a second nut located on the upper and lower surfaces of the upper pressure plate. The damping effect can be adjusted according to actual needs to adapt to different working environments and load conditions.

[0049] (3) The design of the conical support surface and the conical pressure surface: A support platform is set at the bottom of the lower shell. The support platform includes an annular base and a conical support surface located on the self-supporting surface. A shock-absorbing ring is set between the conical support surface and the conical pressure surface. This design makes the upper and lower surfaces of the shock-absorbing ring (8) fit the conical support surface and the conical pressure surface, and can form a good contact with both of them, so that the shock absorption of the entire device is limited to vertical displacement, rather than horizontal movement.

[0050] (4) Sliding friction and energy consumption: The friction layer and the sliding plate are connected by sliding friction, which can consume some energy during the damping process and further enhance the damping effect.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A shock-absorbing device for tower cranes, characterized in that, include: The lower housing (1) is slidably connected to the sliding plate (3) on the lower housing (1); The top of the sliding plate (3) is connected to an upper pressure plate (4), and the lower part of the upper pressure plate (4) is elastically connected to a lower spring groove (7); The lower housing (1) is provided with a support platform (102) at its lower part, and the support platform (102) has a conical support surface; The bottom of the lower spring groove (7) is provided with a conical pressure surface, and a shock-absorbing ring (8) is provided between the conical support surface and the conical pressure surface; The shock-absorbing ring (8) includes a multi-stage rubber shock-absorbing mechanism arranged in sequence. Each rubber shock-absorbing mechanism includes a first rubber ring (801) and a first metal plate (802) arranged vertically. The first metal plate (802) is provided with a plurality of partitions that extend into the first rubber ring (801) at intervals.

2. The shock absorption device for tower cranes according to claim 1, characterized in that: The multi-stage rubber damping mechanism is three-stage, with the resilience of the rubber rings increasing sequentially from top to bottom in each stage.

3. The shock absorption device for tower cranes according to claim 1, characterized in that: The angle between the partition and the first metal plate (802) is 30°-60°.

4. The shock absorption device for tower cranes according to claim 1, characterized in that: The upper pressure plate (4) is connected to an upper spring groove (5) at its lower part, and a spring (6) is connected between the upper spring groove (5) and the lower spring groove (7).

5. The shock absorption device for tower cranes according to claim 4, characterized in that: The upper pressure plate (4) is provided with a screw (403) in the middle and is fixed by a first nut (401) and a second nut (402) provided above and below; the screw (403) is threadedly connected to the upper spring groove (5).

6. The shock absorption device for tower cranes according to claim 1, characterized in that: The lower housing (1) is provided with a sliding sleeve (101) at the bottom, and the lower spring groove (7) is provided with a lower guide post (701) at the bottom, and the lower guide post (701) is slidably connected to the inside of the sliding sleeve (101).

7. The shock absorption device for tower cranes according to claim 1, characterized in that: The upper inner wall of the lower housing (1) is connected to a friction layer (2), and the outer wall of the sliding plate (3) is rubbed against the inner wall of the friction layer (2).

8. The shock absorption device for tower cranes according to claim 7, characterized in that: The sliding plate (3) is also provided with a sliding groove (301), and one end of a fixing member (201) is fixedly provided on the lower housing (1), and the other end of the fixing member (201) engages with the sliding groove (301).

9. The shock absorption device for tower cranes according to claim 7, characterized in that: The outer wall of the friction layer (2) is provided with a plurality of protruding fasteners (202), and the lower housing (1) is provided with a groove for installing the fasteners (202).

10. The shock absorption device for tower cranes according to claim 3, characterized in that: The partition extends into the rubber ring to a height that is half the height of the rubber ring.

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