Electric single-beam crane dustproof sealing type driving mechanism

Abstract

The utility model relates to a kind of driving mechanisms, specifically, a kind of dustproof sealed driving mechanism of electric single-beam crane is provided.The utility model discloses a base, the upper side wall of the base is fixedly installed with motor, the middle position of the upper side wall of the base is fixedly installed with motor, and the fixed frame is fixedly arranged on the upper side wall of the base.The utility model discloses when moving block moves to the same height position with the slot along the guide rod axis direction, makes two pin rods respectively align the slot, spring rebound pushes away the convex ring from horizontal plate, and the end of pin rod is inserted into corresponding slot inside, and the cooperation of pin rod and slot ensures that the cover is kept in horizontal opening state, which not only guarantees the heat dissipation performance when motor works, but also reduces the adhesion and accumulation of dust in the inner wall of the cover, and when the cover rotates back to the vertical state and forms a cover with the fixed frame to protect the idle motor from dust, the dust accumulated in the inner wall of the cover can be effectively transferred to the motor, thereby preventing the motor from being damaged by dust.

Description

Technical Field

[0001] This utility model relates to a drive mechanism, specifically, to a dustproof and sealed drive mechanism for an electric single-girder crane. Background Technology

[0002] An electric single-girder crane is a lightweight and low-cost lifting device. Its main girder uses a single I-beam or box girder structure and typically runs suspended on I-beam tracks above a workshop or warehouse. This equipment is electrically driven, using a motor as the power source, and is used for lifting and unloading materials within a fixed span.

[0003] The working environment of cranes is usually dusty. When this dust accumulates on the motor, it will hinder the motor's heat dissipation, leading to overheating, accelerating insulation aging, and even burning out the windings. In addition, fine particles can wear down precision components such as bearings like abrasives, causing noise, vibration, and premature failure. Conductive dust may also cause short circuits or creepage faults. These factors will not only reduce motor efficiency and shorten its service life, but may also cause malfunctions and downtime, and even create safety hazards. Therefore, dust prevention is a key protective measure to ensure the reliable, efficient, and long-life operation of the motor.

[0004] The utility model with authorization announcement number CN220673513U provides a dustproof mechanism for an electric motor. By setting a dustproof component on the base, the dust cover can cover the base under the action of a second spring, thereby protecting the motor from dust when it is not in use. When the motor needs to dissipate heat after running, the dust cover can be opened, and the plug can be inserted into the slot under the action of a first spring to position the dust cover. Through the above settings, the motor can be protected from dust when it is not in use without affecting the heat dissipation after the motor is running.

[0005] However, the aforementioned patent has a drawback: when the dust cover is opened, its opening faces horizontally to one side. In this state, dust can easily enter the interior of the dust cover through the opening under the action of air convection or airflow, and gradually accumulate at the bottom of the dust cover. When the dust cover covers the base again to protect the stopped motor, the dust accumulated on its inner wall can easily transfer to the surface of the motor, causing the motor to accumulate dust and be damaged. Utility Model Content

[0006] The purpose of this utility model is to provide a dustproof and sealed drive mechanism for an electric single-girder crane to solve the problems mentioned in the background art.

[0007] When the dust cover is opened, dust can easily accumulate at the bottom of the dust cover under the action of air convection or airflow. When the dust cover covers the base again to protect the stopped motor, the dust accumulated on its inner wall can easily transfer to the surface of the motor, causing the motor to accumulate dust and be damaged.

[0008] To address the above problems, the present invention aims to provide a dustproof and sealed drive mechanism for an electric single-girder crane, comprising a base, a motor fixedly mounted on the upper side wall of the base, a fixed frame spanning across the middle position above the motor, the fixed frame being fixedly mounted on the upper side wall of the base, and hinged to the top of both sides of the fixed frame with adjacent flip covers having openings on both sides. A flipping mechanism is provided on one side of the fixed frame, the flipping mechanism being used to drive the two flip covers to rotate synchronously around their respective hinge axes with the fixed frame. When the flipping mechanism drives the flip covers to a horizontal state, the flip covers are located above the motor, and the openings on both sides of the flip covers are respectively facing downwards and horizontally. When the flipping mechanism drives the flip covers to a vertical state, the two flip covers and the fixed frame together form a cover with an open bottom, at which time the motor is located inside the cover.

[0009] As a further improvement to this technical solution, the flipping mechanism includes an assembly frame fixedly mounted on one side of the fixed frame. Inside the assembly frame, guide rods are vertically fixedly mounted near both sides. The same moving block is slidably mounted on the two guide rods. Inclined connecting rods are hinged to both sides of the moving block. The other end of the connecting rod is hinged to the corresponding flip cover.

[0010] As a further improvement to this technical solution, the flipping mechanism also includes a locking mechanism disposed on the moving block. The locking mechanism includes an extension block that is horizontally fixed on the side of the moving block away from the fixed frame. The assembly frame has a movable slot, and the other end of the extension block passes through the movable slot and is fixedly disposed with a horizontal plate.

[0011] As a further improvement to this technical solution, the locking mechanism also includes two pins located on the side of the assembly frame away from the fixed frame. The two pins are located on both sides of the extension block, and the ends of the two pins away from the assembly frame slide through the horizontal plate and are fixedly provided with the same end plate.

[0012] As a further improvement to this technical solution, the locking mechanism also includes a convex ring coaxially fixed on the pin. The convex ring is located between the horizontal plate and the assembly frame. A spring sleeved on the pin is provided between the convex ring and the horizontal plate. The spring pushes the convex ring away from the horizontal plate.

[0013] As a further improvement to this technical solution, two slots are symmetrically opened on the side of the assembly frame away from the fixed frame. When the moving block drives the pin to the same height as the slot, one end of the two pins is inserted into the two slots respectively, and the flip cover rotates to the horizontal state.

[0014] As a further improvement to this technical solution, when the flip cover is rotated to a vertical position, one side of the flip cover contacts the upper side wall of the base.

[0015] As a further improvement to this technical solution, a through slot is provided on one side of the fixing frame, and the output shaft of the motor passes through the through slot and extends to the outside of the base.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. The dustproof and sealed drive mechanism of this electric single-girder crane, when the moving block moves along the axis of the guide rod to the same height as the slot, so that the two pins are aligned with the slots respectively, the spring rebounds and pushes the convex ring away from the horizontal plate, so that the end of the pin is inserted into the corresponding slot. The cooperation between the pin and the slot ensures that the flip cover is stably kept in the horizontal open state, which not only ensures the heat dissipation performance of the motor when it is working, but also reduces the adhesion and accumulation of dust in the air on the inner wall of the flip cover. Subsequently, when the flip cover rotates back to the vertical state and forms a cover with the fixed frame to protect the idle motor from dust, it can effectively prevent the dust accumulated on the inner wall of the flip cover from being transferred to the motor, thereby preventing dust from damaging the motor. Attached Figure Description

[0018] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0019] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the flipping mechanism of this utility model;

[0021] Figure 4 This is one of the partial structural schematic diagrams of the flipping mechanism of this utility model;

[0022] Figure 5 This is the second partial structural schematic diagram of the flipping mechanism of this utility model;

[0023] Figure 6 This is a partial structural cross-sectional view of the flipping mechanism of this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the flip cover of this utility model when rotated to a vertical position.

[0025] The meanings of the labels in the diagram are as follows:

[0026] 1. Base; 2. Motor;

[0027] 3. Fixing bracket; 31. Through slot;

[0028] 4. Flip-top;

[0029] 5. Flipping mechanism; 51. Assembly rack; 511. Movable slot; 512. Slot;

[0030] 52. Guide rod; 53. Moving block; 54. Connecting rod;

[0031] 55. Locking mechanism; 551. Extension block; 552. Horizontal plate; 553. Pin; 554. End plate; 555. Protruding ring; 556. Spring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1

[0034] Please see Figure 1 As shown, the purpose of this embodiment is to provide a dustproof and sealed drive mechanism for an electric single-girder crane, including a base 1. When this device is in use, the base 1 is fixedly installed on the crane equipment in a horizontal position. A motor 2 is fixedly installed on the upper side wall of the base 1. The motor 2 is one of the power sources of the crane equipment.

[0035] A mounting frame 3 spans horizontally above the motor 2 at the center. The mounting frame 3 is a gate-shaped structure consisting of a horizontal plate and two parallel vertical plates. The horizontal plate is directly above the motor 2, and the two vertical plates are located on the output shaft side and the non-output shaft side of the motor 2, respectively. The mounting frame 3 is fixedly mounted on the upper side wall of the base 1. A through slot 31 is provided on one side of the mounting frame 3, through which the output shaft of the motor 2 passes and extends to the outside of the base 1, allowing it to connect to the power components on the crane. Flip covers 4 with openings on adjacent sides are hinged to the top of both sides of the mounting frame 3. (See reference...) Figure 2 A flipping mechanism 5 is provided on one side of the fixed frame 3. The flipping mechanism 5 is used to drive the two flip covers 4 to rotate synchronously around their respective hinge axes with respect to the fixed frame 3. When the motor 2 is in different states, the flipping mechanism 5 can adjust the position of the flip covers 4 accordingly to achieve two functional states:

[0036] When motor 2 is in operation and in a cooling state after operation, refer to Figure 1 The flipping mechanism 5 drives the flip cover 4 to rotate to a horizontal state. At this time, the flip cover 4 is located above the motor 2, and the openings on both sides of the flip cover 4 are set downward and horizontally, respectively. At this time, the motor 2 is exposed to the external environment and can fully contact the external airflow, thereby ensuring the normal heat dissipation of the motor 2.

[0037] When motor 2 finishes its heat dissipation process and is idle, refer to Figure 7The flipping mechanism 5 drives the flip cover 4 to rotate to a vertical state. At this time, one side of the flip cover 4 contacts the upper side wall of the base 1. The two flip covers 4 and the fixing frame 3 together form a cover with an open bottom. The motor 2 is located inside the cover. The cover effectively prevents dust from the external environment from adhering to the motor 2, achieving dustproof and sealed protection for the motor 2 and avoiding dust accumulation that could damage the motor 2.

[0038] The structure of the flipping mechanism 5 is described in detail below, referring to... Figure 3 The flipping mechanism 5 includes an assembly frame 51 fixedly mounted on one side of the fixed frame 3. Inside the assembly frame 51, guide rods 52 are vertically fixed near both sides. The same moving block 53 is slidably mounted on the two guide rods 52. An inclined connecting rod 54 is hinged to both sides of the moving block 53. The other end of the connecting rod 54 is hinged to the corresponding flip cover 4. The hinge point between the connecting rod 54 and the flip cover 4 is located on the edge of the flip cover 4 away from the fixed frame 3. This position design allows the connecting rod 54 to drive the flip cover 4 more effortlessly. When the operator moves the moving block 53 along the axis of the guide rod 52, the moving block 53 drives one end of the connecting rod 54 to move, thereby causing the other end of the connecting rod 54 to drive the corresponding flip cover 4 to rotate around its hinge point with the fixed frame 3.

[0039] The flipping mechanism 5 also includes a locking mechanism 55 disposed on the moving block 53. When the moving block 53 moves upward to rotate the flip cover 4 to a horizontal state, the locking mechanism 55 locks the position of the moving block 53, thereby keeping the flip cover 4 in a horizontal open state to ensure that the motor 2 has good heat dissipation performance when working.

[0040] The structure of the locking mechanism 55 is described in detail below, with reference to... Figures 4-6 The locking mechanism 55 includes an extension block 551 horizontally fixed on the side of the movable block 53 away from the fixed frame 3. The assembly frame 51 has a movable groove 511. The other end of the extension block 551 passes through the movable groove 511 and is fixedly mounted on a horizontal plate 552. The locking mechanism 55 also includes two pins 553 on the side of the assembly frame 51 away from the fixed frame 3. The two pins 553 are located on both sides of the extension block 551, and the ends of the two pins 553 away from the assembly frame 51 slide through the horizontal plate 552 and are fixedly mounted on the same end plate 554. The locking mechanism 55 also includes a convex ring 555 coaxially fixed on the pin 553. The convex ring 555 is located between the horizontal plate 552 and the assembly frame 51. A spring 556 is sleeved on the pin 553 between the convex ring 555 and the horizontal plate 552. The spring 556 pushes the convex ring 555 away from the horizontal plate 552. Two slots 512 are symmetrically opened on the side of the assembly frame 51 away from the fixed frame 3.

[0041] When the moving block 53 moves the pin 553 to the same height as the slot 512, the positions of the two pins 553 correspond to the positions of the two slots 512 respectively. At this time, the moving block 53 drives the flip cover 4 to rotate to a horizontal state through the connecting rod 54. At the same time, the spring 556 rebounds and pushes the convex ring 555 away from the horizontal plate 552. The convex ring 555 drives the pin 553, so that one end of the pin 553 is inserted into the corresponding slot 512. The pin 553 and the slot 512 cooperate to restrict the moving block 53 from moving along the axis of the guide rod 52, thereby locking the position of the moving block 53. This allows the flip cover 4 to be stably kept in a horizontal open state, thereby ensuring that the motor 2 has good heat dissipation performance when working.

[0042] When using this device, if the motor 2 is in operation or in a cooling state after operation, the operator moves the moving block 53 along the axis of the guide rod 52 to the same height as the slot 512. At this time, the moving block 53 drives the flip cover 4 to rotate to a horizontal position through the connecting rod 54, and aligns the two pins 553 with the two slots 512 respectively. Then, the spring 556 rebounds, pushing the convex ring 555 (along with the pins 553) away from the horizontal plate 552, so that one end of the pin 553 is inserted into the corresponding slot 512. That is, one end of the two pins 553 is inserted into the two slots 512 respectively. The cooperation between 553 and slot 512 restricts the movement of moving block 53 along the axis of guide rod 52, thereby locking the position of moving block 53 and ensuring that flip cover 4 is stably kept in the horizontal open state. This state ensures that motor 2 has good heat dissipation performance during operation and heat dissipation, and also significantly reduces the adhesion and accumulation of dust in the air on the inner wall of flip cover 4. When the subsequent two flip covers 4 rotate back to the vertical state and form a cover with the fixing frame 3 to protect motor 2 from dust in the idle state, it can effectively prevent the dust accumulated on the inner wall of flip cover 4 from transferring to motor 2 and prevent dust accumulation from damaging motor 2.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dust-tight sealed drive mechanism for an electric single-beam crane, comprising a base (1), characterized in that: A motor (2) is fixedly installed on the upper side wall of the base (1). A fixing frame (3) spans across the middle position above the motor (2). The fixing frame (3) is fixedly installed on the upper side wall of the base (1). The top of both sides of the fixing frame (3) is hinged with a flip cover (4) with openings on both sides. A flipping mechanism (5) is provided on one side of the fixing frame (3). The flipping mechanism (5) is used to drive the two flip covers (4) to rotate synchronously around their respective hinge axes with the fixing frame (3). When the flipping mechanism (5) drives the flip covers (4) to rotate to a horizontal state, the flip covers (4) are located above the motor (2), and the openings on both sides of the flip covers (4) are respectively facing down and horizontal. When the flipping mechanism (5) drives the flip covers (4) to rotate to a vertical state, the two flip covers (4) and the fixing frame (3) together form a cover with an opening at the bottom. At this time, the motor (2) is located inside the cover.

2. The electrically driven single beam crane dust sealed drive mechanism according to claim 1, characterized in that: The flipping mechanism (5) includes an assembly frame (51) fixedly installed on one side of the fixed frame (3). Inside the assembly frame (51), guide rods (52) are vertically fixed near both sides. The same moving block (53) is slidably installed on the two guide rods (52). The two sides of the moving block (53) are hinged with inclined connecting rods (54). The other end of the connecting rod (54) is hinged to the corresponding flip cover (4).

3. The electrically driven single beam crane dust sealed drive mechanism according to claim 2, characterized in that: The flipping mechanism (5) also includes a locking mechanism (55) provided on the moving block (53). The locking mechanism (55) includes an extension block (551) horizontally fixed on the side of the moving block (53) away from the fixed frame (3). The assembly frame (51) has a movable groove (511). The other end of the extension block (551) passes through the movable groove (511) and is fixedly provided with a horizontal plate (552).

4. The electrically driven single beam crane dust sealed drive mechanism of claim 3, wherein: The locking mechanism (55) also includes two pins (553) disposed on the side of the assembly frame (51) away from the fixed frame (3). The two pins (553) are respectively located on both sides of the extension block (551), and the ends of the two pins (553) away from the assembly frame (51) slide through the horizontal plate (552) and are fixedly disposed on the same end plate (554).

5. The electrically driven single beam crane dust sealed drive mechanism of claim 4, wherein: The locking mechanism (55) further includes a convex ring (555) coaxially fixed on the pin (553). The convex ring (555) is located between the horizontal plate (552) and the assembly frame (51). A spring (556) sleeved on the pin (553) is provided between the convex ring (555) and the horizontal plate (552). The spring (556) pushes the convex ring (555) away from the horizontal plate (552).

6. The electrically driven single beam crane dust sealed drive mechanism of claim 4, wherein: The assembly frame (51) has two slots (512) symmetrically opened on the side away from the fixed frame (3). When the moving block (53) drives the pin (553) to move to the same height as the slot (512), one end of the two pins (553) is inserted into the two slots (512) respectively, and the flip cover (4) rotates to the horizontal state.

7. The electrically driven single beam crane dust sealed drive mechanism of claim 1, wherein: When the flip cover (4) is rotated to the vertical position, one side of the flip cover (4) contacts the upper side wall of the base (1).

8. The electrically driven single beam crane dust sealed drive mechanism of claim 1, wherein: A through slot (31) is provided on one side of the fixing frame (3), and the output shaft of the motor (2) passes through the through slot (31) and extends to the outside of the base (1).

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