Speed reducer for crane

Abstract

The utility model relates to the technical field of speed reducers, and discloses a speed reducer for a crane, which comprises a speed reducer body, a protective shell is sleeved on the outer surface of the speed reducer body, an anti-smashing component is arranged at the upper end of the protective shell, ports are arranged at two ends of the protective shell, and radiating components are arranged in the two ports. According to the anti-smashing speed reducer, the top of the speed reducer body can be protected through the arranged anti-smashing assembly, the situation that the top of the speed reducer shell is smashed by large foreign matter in the using process, consequently, the speed reducer shell is possibly sunken, and even normal use of the speed reducer is possibly affected is avoided, and a good protection effect is achieved; and when the speed reducer body dissipates heat, external dust is blocked, the dust is prevented from entering the protection shell, and a good dustproof effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of speed reducers, and particularly relates to a speed reducer for a crane. Background Technique

[0002] A speed reducer, also known as a reduction gear, is an independent component composed of gear transmission, worm transmission, gears, and worm gears enclosed in a rigid housing. It is commonly used as a speed reduction transmission device between a prime mover and a working machine. The speed reducer plays a role in matching speeds and transmitting torques between the prime mover and the working machine or actuator. It is a relatively precise machine, and the purpose of using it is to reduce the speed and increase the torque. The speed reducer is one of the important components of a crane.

[0003] The utility model patent application document with the publication number of "CN215110438U" discloses a speed reducer for a crane with a protection device, which mainly consists of a base, a speed reducer body, a cooling water pipe, a water inlet, a water outlet, a heat conduction plate, a carbon fiber film, and a reinforcing rib. This technical solution sets an installation groove on the inner surface of the upper shell of the speed reducer housing, and arranges a cooling water pipe in the notch of the installation groove, so that when the temperature inside the speed reducer housing is relatively high, the cooling water in the inner cavity of the cooling water pipe can cool down and dissipate heat from the speed reducer body, thereby avoiding potential safety hazards caused by excessive working temperature.

[0004] The speed reducer for a crane disclosed in the above document has the following defects: The speed reducer of the prior art is generally installed outside the crane, which will cause the speed reducer to be exposed to the outside for a long time. When a relatively large foreign object hits the top of the speed reducer housing, it may cause the depression of the speed reducer housing, and even may affect the normal use of the speed reducer. At the same time, in the prior art, a protective shell is generally sleeved outside the speed reducer housing to protect the speed reducer. However, when the speed reducer is used for a long time, heat will be generated. Due to the protective shell being sleeved, the heat cannot be effectively discharged.

[0005] It can be seen from this that the existing speed reducer for a crane does not have a good protection structure, and it is necessary to improve the existing deficiencies and provide a speed reducer for a crane. Content of the Utility Model

[0006] The purpose of the utility model is to provide a speed reducer for a crane to solve the problem that the speed reducer for a crane does not have a good protection structure.

[0007] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0008] The utility model relates to a speed reducer for a crane, which comprises a speed reducer body. A protective shell is sleeved on the outer surface of the speed reducer body. An anti-smashing component is arranged at the upper end of the protective shell. Through openings are formed at both ends of the protective shell, and heat dissipation components are arranged inside the two through openings.

[0009] Furthermore, the anti-smashing component comprises connecting blocks. There are two connecting blocks which are symmetrically distributed. The connecting blocks are installed at the upper end of the speed reducer body through bolts. A sliding groove is formed on the upper surface of the connecting block. A guide rod is arranged inside the sliding groove, and a slider is slidably connected to the outer surface of the guide rod.

[0010] Furthermore, a connecting plate is hinged to the upper surface of the slider. The other end of the connecting plate is hinged to a protective cover. The protective cover is slidably connected inside the protective shell. A spring is sleeved on the outer surface of the guide rod. One end of the spring is installed on the outer surface of the slider, and the other end of the spring is installed on the inner surface of the sliding groove.

[0011] Furthermore, an installation opening is formed on the outer surface of the protective cover, and a dust-proof net is arranged inside the installation opening.

[0012] Furthermore, the heat dissipation component comprises a heat dissipation cylinder. The heat dissipation cylinder is installed inside the through opening. Connecting ear blocks are arranged on the outer surface of the heat dissipation cylinder. The connecting ear blocks are installed on the outer surface of the protective shell through bolts. A support seat is arranged inside the heat dissipation cylinder, and a heat dissipation motor is installed in the middle of the support seat. A fan blade is installed at the output end of the heat dissipation motor.

[0013] Furthermore, a cover plate is hinged to the outer surface of the heat dissipation cylinder. A first rectangular block is arranged on the outer surface of the cover plate, and a second rectangular block is arranged on the outer surface of the heat dissipation cylinder. The first rectangular block is fixedly installed with the second rectangular block through bolts, and a filter screen is clamped on the outer surface of the cover plate.

[0014] The utility model has the following beneficial effects:

[0015] (1) Through the arranged anti-smashing component, the top of the speed reducer body can be protected, avoiding large foreign objects falling on the top of the speed reducer shell during use, which may cause the depression of the speed reducer shell and even affect the normal use of the speed reducer, playing a good protection role. At the same time, through the arranged dust-proof net, when the speed reducer body dissipates heat, it blocks the dust from the outside and avoids the dust from entering the inside of the protective shell, playing a good dust-proof role.

[0016] (2) By starting the cooling motor of the present utility model, the output end of the cooling motor drives the fan blades to rotate, generating suction inside the cooling cylinder, sucking external air into the protective housing through the cooling cylinder, and then cooling the speed reducer body inside the protective housing, avoiding equipment damage caused by the high temperature problem of the speed reducer body, and achieving a good cooling effect.

[0017] Of course, it is not necessary for any product implementing the present utility model to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 It is an exploded view of the overall structure of the present utility model;

[0021] Figure 3 It is a sectional view of the overall structure of the present utility model;

[0022] Figure 4 It is an exploded view of the heat dissipation component structure of the present utility model;

[0023] In the drawings, the list of components represented by each reference numeral is as follows:

[0024] In the figure: 1, speed reducer body; 2, protective housing; 201, through hole; 3, anti-smashing component; 301, connecting block; 302, chute; 303, guide rod; 304, slider; 305, connecting plate; 306, protective cover; 307, spring; 308, dust-proof net; 4, heat dissipation component; 401, cooling cylinder; 402, connecting ear block; 403, support seat; 404, cooling motor; 405, fan blades; 406, cover plate; 407, first rectangular block; 408, second rectangular block; 409, filter screen. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some, rather than all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present utility model.

[0026] Please refer to Figure 1 - Figure 4 As shown in the figure, the utility model relates to a speed reducer for a crane, which comprises a speed reducer body 1. A protective shell 2 is sleeved on the outer surface of the speed reducer body 1. An anti-smashing component 3 is arranged at the upper end of the protective shell 2. Through holes 201 are formed at both ends of the protective shell 2. Heat dissipation components 4 are arranged inside the two through holes 201;

[0027] The anti-smashing component 3 comprises connecting blocks 301. There are two connecting blocks 301 which are symmetrically distributed. The connecting blocks 301 are installed at the upper end of the speed reducer body 1 through bolts. A sliding groove 302 is formed on the upper surface of the connecting block 301. A guide rod 303 is arranged inside the sliding groove 302. A slider 304 is slidably connected to the outer surface of the guide rod 303;

[0028] During installation, first, the connecting blocks 301 are fixedly installed on the speed reducer body 1 through bolts. Then, the protective shell 2 is sleeved on the outside of the speed reducer body 1, and the protective shell 2 is fixedly installed on the speed reducer body 1 through bolts. Finally, the speed reducer body 1 is installed at the place to be used;

[0029] A connecting plate 305 is hinged to the upper surface of the slider 304. The other end of the connecting plate 305 is hinged to a protective cover 306. The protective cover 306 is slidably connected inside the protective shell 2. A spring 307 is sleeved on the outer surface of the guide rod 303. One end of the spring 307 is installed on the outer surface of the slider 304, and the other end of the spring 307 is installed on the inner surface of the sliding groove 302;

[0030] When a relatively large foreign object falls and hits, the protective cover 306 can protect the top of the speed reducer body 1. At the same time, when the foreign object contacts the outer surface of the protective cover 306, the protective cover 306 will move downward inside the protective shell 2. At the same time, the connecting plate 305 pushes the slider 304 to slide axially outward along the guide rod 303 and gradually compresses the spring 307, so as to buffer the impact force and avoid the problem that when the foreign object hits the protective cover 306, the instantaneous impact force on the protective cover 306 is too large, and the service life of the protective cover 306 is prolonged;

[0031] An installation opening is formed on the outer surface of the protective cover 306, and a dust-proof net 308 is arranged inside the installation opening;

[0032] Through the arranged dust-proof net 308, when the speed reducer body 1 dissipates heat, it blocks the dust from the outside and avoids the dust from entering the inside of the protective shell 2, achieving a good dust-proof effect;

[0033] The heat dissipation component 4 includes a heat dissipation cylinder 401. The heat dissipation cylinder 401 is installed inside the through port 201. Connecting ear blocks 402 are provided on the outer surface of the heat dissipation cylinder 401. The connecting ear blocks 402 are installed on the outer surface of the protective shell 2 by bolts. A support seat 403 is provided inside the heat dissipation cylinder 401. A heat dissipation motor 404 is installed in the middle of the support seat 403. A fan blade 405 is installed at the output end of the heat dissipation motor 404;

[0034] When a large amount of heat accumulates inside the protective shell 2, by starting the heat dissipation motor 404, the output end of the heat dissipation motor 404 drives the fan blade 405 to rotate, generating suction inside the heat dissipation cylinder 401, sucking the outside air into the protective shell 2 through the heat dissipation cylinder 401, and then dissipating heat from the speed reducer body 1 inside the protective shell 2, avoiding equipment damage to the speed reducer body 1 due to high temperature problems, and achieving a good heat dissipation effect;

[0035] A cover plate 406 is hinged on the outer surface of the heat dissipation cylinder 401. A first rectangular block 407 is provided on the outer surface of the cover plate 406. A second rectangular block 408 is provided on the outer surface of the heat dissipation cylinder 401. The first rectangular block 407 is fixedly installed with the second rectangular block 408 by bolts. A filter screen 409 is clamped on the outer surface of the cover plate 406;

[0036] During heat dissipation, through the provided filter screen 409, dust from the outside can be blocked, preventing the outside dust from entering the protective shell 2 through the heat dissipation cylinder 401 and affecting the service life of the speed reducer body 1. When a large amount of dust accumulates on the surface of the filter screen 409, by turning the bolts, the fixed installation of the first rectangular block 407 and the second rectangular block 408 is cancelled, and then the first rectangular block 407 is pulled upward, causing the cover plate 406 to rotate axially around the hinge with the heat dissipation cylinder 401 as the center, and the filter screen 409 gradually separates from the inside of the heat dissipation cylinder 401. When the cover plate 406 rotates 180°, the filter screen 409 completely separates from the inside of the heat dissipation cylinder 401. At this time, the filter screen 409 can be removed from the cover plate 406 and replaced.

[0037] The above - disclosed preferred embodiments of the present utility model are only used to help illustrate the present utility model. The preferred embodiments do not elaborate on all details and do not limit the present utility model to only the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A speed reducer for a crane, comprising a speed reducer body (1), and a protective shell (2) is sleeved on the outer surface of the speed reducer body (1), characterized in that: An anti-smashing component (3) is provided at the upper end of the protective case (2), and through openings (201) are formed at both ends of the protective case (2), and heat dissipation components (4) are arranged inside the two through openings (201).

2. The speed reducer for a crane according to claim 1, characterized in that: The anti-smashing component (3) includes connecting blocks (301). There are two connecting blocks (301) which are symmetrically distributed. The connecting blocks (301) are installed at the upper end of the reducer body (1) by bolts. A chute (302) is formed on the upper surface of the connecting block (301), a guide rod (303) is arranged inside the chute (302), and a slider (304) is slidably connected to the outer surface of the guide rod (303).

3. The speed reducer for a crane according to claim 2, characterized in that: A connecting plate (305) is hinged to the upper surface of the slider (304), the other end of the connecting plate (305) is hinged to a protective cover (306), the protective cover (306) is slidably connected inside the protective case (2), a spring (307) is sleeved on the outer surface of the guide rod (303), one end of the spring (307) is installed on the outer surface of the slider (304), and the other end of the spring (307) is installed on the inner surface of the chute (302).

4. The speed reducer for a crane according to claim 3, characterized in that: An installation opening is formed on the outer surface of the protective cover (306), and a dust-proof net (308) is arranged inside the installation opening.

5. The speed reducer for a crane according to claim 1, characterized in that: The heat dissipation component (4) includes a heat dissipation cylinder (401). The heat dissipation cylinder (401) is installed inside the through opening (201). Connecting ear blocks (402) are arranged on the outer surface of the heat dissipation cylinder (401), and the connecting ear blocks (402) are installed on the outer surface of the protective case (2) by bolts. A support seat (403) is arranged inside the heat dissipation cylinder (401), a heat dissipation motor (404) is installed in the middle of the support seat (403), and a fan blade (405) is installed at the output end of the heat dissipation motor (404).

6. The speed reducer for a crane according to claim 5, wherein: A cover plate (406) is hinged to the outer surface of the heat dissipation cylinder (401). A first rectangular block (407) is arranged on the outer surface of the cover plate (406), a second rectangular block (408) is arranged on the outer surface of the heat dissipation cylinder (401), the first rectangular block (407) is fixedly installed with the second rectangular block (408) by bolts, and a filter screen (409) is clamped on the outer surface of the cover plate (406).

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