Limiting device of electric flat carriage

Abstract

The utility model discloses an electric flat carriage limiting device which comprises a limiting shell, a limiting cover and a cam, the limiting cover is arranged at the top of the limiting shell, the cam is arranged on one side of the limiting shell, two wires are arranged on the other side of the limiting shell, and two positioning plates are fixedly installed on the two sides of the limiting shell respectively. A limiting cover is arranged in the limiting shell, an attaching plate is arranged at the bottom of the limiting cover, sealing grooves are formed in the two sides of the limiting shell correspondingly, supporting rods are arranged in the two sealing grooves correspondingly, and after the bottom face of the limiting cover is attached to the surface of the limiting shell, the supporting rods are arranged in the two sealing grooves correspondingly. And the attaching plate gradually approaches the first sealing plate and the second sealing plate, and the first sealing plate and the second sealing plate are tightly adsorbed, so that a gap between the limiting shell and the limiting cover is reduced, the sealing performance of the limiting shell is improved, the damp-proof effect on internal mechanisms and circuits of the limiting shell is further achieved, and the service life of the limiting device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of limiting devices, in particular to a limiting device for an electric flat car. Background Art

[0002] The limit device of the electric flat car is an important safety device. Its function is to limit the operating range of the electric flat car and prevent it from exceeding the predetermined track or working area, thereby avoiding possible equipment damage or safety accidents. The limit device includes a travel switch, which can drive the action of the contacts directly or through a lever; the contact system has the function of contacting and disconnecting the circuit, and can realize the start, stop, reverse and other controls of the electric flat car; the outer casing is used to protect the internal mechanism and circuit of the switch to ensure the normal operation of the travel switch.

[0003] The limit device includes a travel switch, a cam and a micro switch, which can control the start and stop of the electric flat car. The travel switch is composed of a shell, and its internal mechanism and circuit are wrapped by the shell. A cover is arranged on the top of the shell, and the cover is usually positioned with bolts, and the bolts may become loose, so a gap will be generated between the cover and the shell, and external moisture will easily penetrate into the inside of the shell, and its internal mechanism and circuit may be damaged by moisture. Therefore, it is particularly important to design a limit device for an electric flat car. Utility Model Content

[0004] The utility model aims to provide a limiting device for an electric flat car to solve the problem that the bolts mentioned in the above background technology may become loose, so that a gap is generated between the cover and the shell, and external moisture is easy to penetrate into the inside of the shell.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a limiting device for an electric flat car, comprising a limiting shell, a limiting cover and a cam, the limiting cover being arranged on the top of the limiting shell, the cam being arranged on one side of the limiting shell, two wires being arranged on the other side of the limiting shell, two positioning plates being fixedly installed on both sides of the limiting shell, a bonding plate being arranged on the bottom of the limiting cover, sealing grooves being opened on both sides of the limiting shell, support rods being arranged inside the two sealing grooves, lifting blocks being sleeved on one end of the two support rods, a first sealing plate and a second sealing plate being arranged inside the limiting shell, a plurality of magnet bars being arranged on the top of the bonding plate, and a plurality of iron bars being arranged inside the first sealing plate and the second sealing plate.

[0006] As a preferred technical solution of the utility model, one end of the plurality of magnet bars is respectively fixedly connected to the bottom end of the limiting cover, and the plurality of magnet bars are respectively magnetically connected to the plurality of iron bars.

[0007] As a preferred technical solution of the present utility model, the positions of the plurality of magnet bars are arranged at equal intervals.

[0008] As a preferred technical solution of the utility model, a second supporting block is disposed on one side of the first sealing plate and the second sealing plate, and a first supporting block is disposed on one side of the two lifting blocks.

[0009] As a preferred technical solution of the utility model, two binding rods are fixedly installed on the top ends of the two first support blocks, and one end of the four binding rods is fixedly connected to the bottom ends of the two second support blocks respectively.

[0010] As a preferred technical solution of the present invention, the two second support blocks are respectively located on the top of the two first support blocks, and the positions of the two adjacent restraining rods are corresponding.

[0011] As a preferred technical solution of the utility model, the two lifting blocks are movably mounted on one end of the two support rods respectively.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model discloses a limiting device for an electric flat car, which is provided with a lifting block, a restraining rod, a first sealing plate, a second sealing plate, a bonding plate and an iron bar. After the bottom surface of the limiting cover is bonded with the surface of the limiting shell, the bonding plate gradually approaches the first sealing plate and the second sealing plate. Since the magnet bar and the iron bar are magnetically connected, the first sealing plate and the second sealing plate are pushed to move upward, and the lifting block can move upward at one end of the supporting rod. The surfaces of the first sealing plate and the second sealing plate will continuously bond with the bottom surface of the bonding plate, and the two are tightly adsorbed, thereby reducing the gap between the limiting shell and the limiting cover, thereby improving the sealing performance of the limiting shell, and further playing the effect of moisture-proofing the internal mechanism and circuit of the limiting shell, and extending the service life of the limiting device.

[0014] 2. The utility model provides a limiting device for an electric flat car, which is provided with a support rod, a first support block, a magnet bar and a second support block. The bonding plate is located on the top of the first sealing plate and the second sealing plate. After the limiting cover is positioned to the top of the limiting shell, the first sealing plate and the second sealing plate are driven to move to a position close to the bonding plate. The second support block is connected to the first support block by two binding rods, and the friction between the lifting block and the support rod is relatively large. When no pressure is applied to the limiting cover, the lifting block will remain stable at one end of the support rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view structural schematic diagram of the utility model;

[0016] Figure 2For the utility model Figure 1 The enlarged view of point A in the middle;

[0017] Figure 3 It is a partial top view structural schematic diagram of the utility model;

[0018] Figure 4 It is a partial side structural schematic diagram of the utility model.

[0019] In the figure: 1. limit housing; 2. limit cover; 3. cam; 4. wire; 5. positioning plate; 6. sealing groove; 7. support rod; 8. lifting block; 9. first support block; 10. restraining rod; 11. first sealing plate; 12. second sealing plate; 13. bonding plate; 14. magnet strip; 15. second support block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 The utility model provides a technical solution for a limiting device of an electric flat car:

[0022] Embodiment 1:

[0023] like Figure 1-3 As shown, an electric flat car limiting device comprises a limiting shell 1, a limiting cover 2 and a cam 3, the limiting cover 2 is arranged on the top of the limiting shell 1, the cam 3 is arranged on one side of the limiting shell 1, two wires 4 are arranged on the other side of the limiting shell 1, two positioning plates 5 are fixedly installed on both sides of the limiting shell 1, a fitting plate 13 is arranged on the bottom of the limiting cover 2, sealing grooves 6 are opened on both sides of the limiting shell 1, support rods 7 are arranged inside the two sealing grooves 6, and one end of the two support rods 7 is sleeved with a lifting block 8, and the limiting A first sealing plate 11 and a second sealing plate 12 are provided inside the shell 1, a plurality of magnet strips 14 are provided on the top of the bonding plate 13, and a plurality of iron strips are provided inside the first sealing plate 11 and the second sealing plate 12. The surfaces of the first sealing plate 11 and the second sealing plate 12 will continuously fit with the bottom surface of the bonding plate 13, and the two are tightly adsorbed, thereby reducing the gap between the limit shell 1 and the limit cover 2, thereby improving the sealing performance of the limit shell 1, and further playing a moisture-proof effect on the internal mechanism and circuit of the limit shell 1.

[0024] Embodiment 2:

[0025] Based on the first embodiment, Figure 1 and Figure 4 As shown, two binding rods 10 are fixedly installed on the top of the two first support blocks 9, and one end of the four binding rods 10 is fixedly connected to the bottom end of the two second support blocks 15 respectively. The two second support blocks 15 are respectively located on the top of the two first support blocks 9, and the positions of the two adjacent binding rods 10 are corresponding. The utility model is a limiting device for an electric flat car, which is provided with support rods 7, first support blocks 9, magnet bars 14 and second support blocks 15. The bonding plate 13 is located on the top of the first sealing plate 11 and the second sealing plate 12. After the limiting cover 2 is positioned to the top of the limiting shell 1, it drives the first sealing plate 11 and the second sealing plate 12 to move to a position close to the bonding plate 13.

[0026] Working principle: The limit device of the electric flat car is an important safety device. Its function is to limit the operating range of the electric flat car and prevent it from exceeding the predetermined track and working area, thereby avoiding possible equipment damage and safety accidents. The limit device includes a travel switch, which can directly drive the action of the contact through the lever; the contact system has the function of contacting and disconnecting the circuit, which can realize the start, stop and reverse control of the electric flat car; the casing is used to protect the internal mechanism and circuit of the switch to ensure the normal operation of the travel switch. The working principle of the travel switch is that when the stop iron on the moving part When the travel switch is pressed, the transmission rod rotates together with the rotating shaft, so that the cam 3 pushes the collision block. When the collision block hits the micro switch, the contact of the micro switch moves to connect and disconnect the control circuit, thereby realizing the control of the electric flat car. When the limit shell 1 and the limit cover 2 are repaired and installed, the staff will fit the bottom surface of the limit cover 2 with the surface of the limit shell 1. At this time, the fitting plate 13 gradually approaches the first sealing plate 11 and the second sealing plate 12. Since the magnet bar 14 is magnetically connected to the iron bar, the first sealing plate 11 and the second sealing plate 12 are pushed upward, and the lifting block 8 can move upward at one end of the support rod 7, and the surfaces of the first sealing plate 11 and the second sealing plate 12 will continuously fit with the bottom surface of the bonding plate 13, and the two are tightly adsorbed. The adsorption of the first sealing plate 11 and the second sealing plate 12 and the bonding plate 13 can wrap and cover the surrounding of the limiting shell 1, and under the effect of the magnetic connection, the adsorption force of the two is relatively large, which increases the firmness between the limiting shell 1 and the limiting cover 2, reduces the gap between the limiting shell 1 and the limiting cover 2, thereby improving the sealing performance of the limiting shell 1, and further plays a role in The moisture-proof effect of the internal structure and circuit of the limiting shell 1 prolongs the service life of the limiting device. The bonding plate 13 is located on the top of the first sealing plate 11 and the second sealing plate 12. After the limiting cover 2 is positioned at the top of the limiting shell 1, it drives the first sealing plate 11 and the second sealing plate 12 to move to a position close to the bonding plate 13. The second support block 15 is connected to the first support block 9 by two binding rods 10, and the friction between the lifting block 8 and the support rod 7 is relatively large. When no pressure is applied to the limiting cover 2, the lifting block 8 will remain stable at one end of the support rod 7.

[0027] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected 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 the specific circumstances.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A limit device for an electric flat car, comprising a limit housing (1), a limit cover (2) and a cam (3), wherein the limit cover (2) is arranged on the top of the limit housing (1), and the cam (3) is arranged on one side of the limit housing (1), characterized in that: Two conducting wires (4) are arranged on the other side of the limit shell (1), two positioning plates (5) are fixedly installed on both sides of the limit shell (1), a bonding plate (13) is arranged at the bottom of the limit cover (2), sealing grooves (6) are opened on both sides of the limit shell (1), support rods (7) are arranged inside the two sealing grooves (6), and lifting blocks (8) are sleeved on one end of the two support rods (7), a first sealing plate (11) and a second sealing plate (12) are arranged inside the limit shell (1), a plurality of magnet bars (14) are arranged on the top of the bonding plate (13), and a plurality of iron bars are arranged inside the first sealing plate (11) and the second sealing plate (12).

2. The electric flat car limiting device according to claim 1 is characterized in that: One end of the plurality of magnet bars (14) is respectively fixedly connected to the bottom end of the limiting cover (2), and the plurality of magnet bars (14) are respectively magnetically connected to the plurality of iron bars.

3. The electric flat car limiting device according to claim 2 is characterized in that: The plurality of magnet bars (14) are arranged at equal intervals.

4. The electric flat car limiting device according to claim 1 is characterized in that: A second support block (15) is provided on one side of each of the first sealing plate (11) and the second sealing plate (12), and a first support block (9) is provided on one side of each of the two lifting blocks (8).

5. The electric flat car limiting device according to claim 4 is characterized in that: Two restraining rods (10) are fixedly mounted on the top ends of the two first supporting blocks (9), and one end of the four restraining rods (10) is fixedly connected to the bottom ends of the two second supporting blocks (15) respectively.

6. The electric flat car limiting device according to claim 5 is characterized in that: The two second support blocks (15) are respectively located on the top of the two first support blocks (9), and the positions of the two adjacent restraining rods (10) are corresponding.

7. The electric flat car limiting device according to claim 1 is characterized in that: The two lifting blocks (8) are movably sleeved on one end of the two support rods (7) respectively.

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