An anti-drop mechanism for drawers on low-voltage electrical cabinets

Abstract

The present invention discloses an anti-drop mechanism for a drawer on a low-voltage electrical cabinet, comprising an electrical cabinet, wherein a plurality of accommodating openings are provided in the electrical cabinet, drawers are installed in the accommodating openings in a pull-out manner, side panels are fixedly installed at both ends of the front surface of the drawer, turntables are installed on both sides of the electrical cabinet flush with the position of the drawer, a telescopic pull rod is fixedly connected between the turntable and the side panel, a lifting mechanism is used to drive the telescopic pull rod to deflect, a device room is provided on the inner surface of the electrical cabinet, and a winding mechanism is installed at the bottom of the device room. When a staff member needs to check the components in a drawer at a high position, the corresponding position motor is started to drive the drawer to move out, and when the drawer is moved out, the drawer can be lowered to a suitable position by pulling the telescopic pull rod, and the drawer can also be prevented from falling. The draw rope is twisted by the winding mechanism, so that the stability of the drawer when it is raised or lowered can be ensured.

Description

Technical Field

[0001] The invention relates to the technical field of low-voltage electrical equipment, and more specifically, to an anti-drop mechanism for a drawer on a low-voltage electrical cabinet. Background Art

[0002] In the prior art, there are various transmission structures for drawers of electrical cabinets. The simplest one is to push and pull the drawers directly by hand without any device. Slightly improved ones include lever transmission mechanism, screw transmission mechanism, etc. However, they only facilitate the entry and exit of drawers. Since the current electrical cabinets are relatively high, when the staff needs to check the components in the high drawers, they still need to climb a ladder to operate, which is not very safe.

[0003] Since the drawers in the low-voltage electrical cabinet are equipped with many electrical components, the drawers are heavy, so a large force is required to pull out the drawers, and the operation is time-consuming and laborious. During the use of the low-voltage electrical cabinet, it often happens that the drawers fall to the ground during the process of pulling out the low-voltage electrical cabinet due to excessive force, making the drawers and the electrical components inside easily damaged. Summary of the invention

[0004] The purpose of the present invention is to provide a drop prevention mechanism for a drawer on a low-voltage electrical cabinet.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is as follows: an anti-fall mechanism for the upper drawer of a low-voltage electrical cabinet, comprising an electrical cabinet, a plurality of accommodating ports are arranged in the electrical cabinet, drawers are installed in the accommodating ports in a pull-out manner, a groove is provided at the bottom of the accommodating port, a driving roller driven by a motor is rotatably installed in the groove, the driving roller is in rolling contact with the drawer, a plurality of upper drawers are located on the upper part of the electrical cabinet, side panels are fixed at both ends of the front surface of the upper drawer, turntables are rotatably installed on both sides of the electrical cabinet flush with the position of the upper drawer, a telescopic pull rod is fixedly connected between the turntable and the side panels, a lifting mechanism is installed on both sides of the electrical cabinet at a position below the turntable, the lifting mechanism is used to drive the telescopic pull rod to deflect, a device chamber is provided on the inner surface of the electrical cabinet, a winding mechanism is installed at the bottom of the device chamber, and openings are provided on the surface of the device chamber at the upper drawer position, a pull rope is fixedly connected to the back of the upper drawer, one end of the pull rope passes through the opening and is connected to the winding mechanism, a control panel is fixedly installed on one side of the electrical cabinet, and the control panel is used to control the start and stop of the lifting mechanism and the winding mechanism.

[0006] Preferably, the lifting mechanism includes a cylinder and a lifting rod, the lifting rod is fixedly mounted on one end of the turntable away from the telescopic pull rod, the cylinder is movably hingedly mounted on the outer surface of the electrical cabinet, the cylinder is located below the lifting rod, and the piston shaft of the cylinder is movably hinged to the lifting rod.

[0007] Preferably, the winding mechanism includes a winding drum, a servo motor, a telescopic locking mechanism and a plurality of sleeves. The winding drum is rotatably mounted on the bottom of the device chamber through a bearing seat. The plurality of sleeves are movably mounted on the surface of the winding drum. One end of the pull rope is wound around the surface of the sleeve at a corresponding position. The servo motor is fixedly mounted on the inner wall of the device chamber. The output shaft of the servo motor is fixedly connected to one end of the winding drum. The telescopic locking mechanism is used to lock any sleeve.

[0008] Preferably, the telescopic locking mechanism includes an electric push rod and a sliding plate. The electric push rod is rotatably installed at the bottom of the device chamber. The piston rod of the electric push rod is fixedly connected to the sliding plate. The sliding plate is slidably inserted in the winding drum. Sliding grooves are provided on both sides of the winding drum. Limiting protruding ribs that are slidably connected to the sliding grooves at corresponding positions are fixedly installed at both ends of the sliding plate. Two protruding cones are fixedly installed on the inner wall of the sleeve in an axially symmetrical manner.

[0009] Preferably, retaining rings are fixedly mounted on the surface of the winding drum at both ends of the sleeve.

[0010] Preferably, the telescopic pull rod comprises an L-shaped rod and a telescopic rod, one end of the L-shaped rod is rotatably connected to the side plate, the other end of the L-shaped rod is fixedly connected to one end of the telescopic rod, and the other end of the telescopic rod is fixedly connected to a turntable at a corresponding position.

[0011] Preferably, a sleeve is fixedly installed on one side surface of the side plate, an arc-shaped limit groove is opened on the inner wall of the sleeve, one end of the L-shaped rod is movably inserted in the sleeve, and a limit block is fixedly installed on one end of the L-shaped rod, and the limit block is inserted in the arc-shaped limit groove.

[0012] Preferably, pressure rollers are movably installed at the upper and lower ends of the opening, and the two pressure rollers clamp the pull rope. Rollers for supporting the pull rope are movably installed at the opening position inside the device chamber.

[0013] Preferably, a limiting sleeve is provided on the surface of the electric push rod, the limiting sleeve is fixedly installed on the bottom of the device chamber, an annular groove is provided on the inner side wall of the limiting sleeve, and an annular rib movably engaged with the annular groove is fixedly installed on the surface of the electric push rod.

[0014] Preferably, a plurality of button switches are installed on the control panel, and the button switches are used to control the start and stop of the corresponding motors, servo motors, electric push rods and cylinders.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] The present invention can drive the upper drawer to move through the transmission roller, so as to conveniently control the automatic entry and exit of the upper drawer. When the staff needs to check the components in the upper drawer at a high position, they only need to start the button switch corresponding to the upper drawer. The button switch starts the corresponding position motor to drive the upper drawer to move out. After the upper drawer is moved out, the upper drawer can be lowered to a suitable position by pulling the telescopic pull rod, and the upper drawer can be prevented from falling. The pull rope is twisted by the winding mechanism to ensure the stability of the upper drawer when it is raised and lowered, and the upper drawer can be pulled back into the accommodating opening, so that the staff does not need to climb a ladder to operate, the operation is simple, time and labor are saved, and safety is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural diagram of the electrical cabinet of the present invention;

[0019] Figure 2 is a cross-sectional view of the electrical cabinet of the present invention;

[0020] Figure 3 It is a structural diagram of the winding mechanism of the present invention;

[0021] Figure 4 is a cross-sectional view of the winding mechanism of the present invention;

[0022] Figure 5 It is a connection diagram of the push rod and the sliding plate of the present invention;

[0023] Figure 6 It is a cross-sectional view of the invented sleeve.

[0024] In the figure: 1 electrical cabinet, 11 device room, 12 opening, 13 pressure roller, 14 roller, 15 groove channel, 16 transmission roller, 17 pull rope, 2 accommodating opening, 3 drawer, 4 side plate, 41 shaft sleeve, 42 arc limit groove, 5 telescopic pull rod, 51 L-shaped rod, 52 telescopic rod, 53 limit block, 6 control panel, 7 turntable, 8 lifting mechanism, 81 cylinder, 82 tilting rod, 9 winding mechanism, 91 winding drum, 92 sleeve, 93 servo motor, 94 slide groove, 95 telescopic locking mechanism, 951 electric push rod, 952 slide plate, 953 limit protruding rib, 954 limit sleeve, 955 ring groove, 956 ring rib, 96 retaining ring, 97 protruding cone. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0026] See also Figure 1 and Figure 2 As shown, the present invention provides an anti-falling mechanism for the upper drawer of a low-voltage electrical cabinet, comprising an electrical cabinet 1, wherein the electrical cabinet 1 is provided with a plurality of accommodating openings 2, in which drawers 3 are installed in a pull-out manner, a groove 15 is provided at the bottom of the accommodating opening 2, in which a transmission roller 16 driven by a motor is rotatably installed, the transmission roller 16 is in rolling contact with the drawer 3, and the motor can drive the drawer 1 to move through the transmission roller 16, so as to facilitate the automatic entry and exit control of the drawer 1, a plurality of upper drawers located on the upper part of the electrical cabinet 1, side panels 4 are fixed at both ends of the front side surface of the upper drawers, turntables 7 are rotatably installed on both sides of the electrical cabinet 1 flush with the position of the upper drawers, the side panels 4 and the turntable 7 can be selectively installed according to the height of the upper drawer 1, the drawer 3 located at the lower layer for convenience of pulling and drawing by the staff does not need to be installed with the side panels 4 and the turntable 7, a telescopic pull rod 5 is fixedly connected between the turntable 7 and the side panels 4, and when the upper drawer is pulled out , by pulling the telescopic pull rod 5, the upper drawer can be lowered to a suitable position, and the upper drawer can also be prevented from falling. Lifting mechanisms 8 are installed on both sides of the electrical cabinet 1 below the turntable 7. The lifting mechanisms 8 are used to drive the telescopic pull rod 5 to deflect, so as to ensure that the upper drawer 1 can be adjusted in height when it is pulled out. A device chamber 11 is provided on the inner surface of the electrical cabinet 1, and a winding mechanism 9 is installed at the bottom of the device chamber 11. An opening 12 is provided on the surface of the device chamber 11 located at the upper drawer position. A pull rope 17 is fixedly connected to the back of the upper drawer, and one end of the pull rope 17 passes through the opening 12 and is connected to the winding mechanism 9. The pull rope 17 is twisted by the winding mechanism 9 to ensure the stability of the upper drawer during lifting and lowering, and it is also enough to pull the upper drawer back into the accommodating port 2. A control panel 6 is fixedly installed on one side of the electrical cabinet 1, and the control panel 6 is used to control the start and stop of the lifting mechanism 8 and the winding mechanism 9.

[0027] In this embodiment, the lifting mechanism 8 includes a cylinder 81 and a tilting rod 82. The tilting rod 82 is fixedly mounted on one end of the turntable 7 away from the telescopic pull rod 5. The cylinder 81 is movably hinged on the outer surface of the electrical cabinet 1. The cylinder 81 is located below the tilting rod 82. The piston shaft of the cylinder 81 is movably hinged to the tilting rod 82. The telescopic movement of the cylinder 81 can drive the tilting rod 82 to deflect, thereby causing the turntable 7 to drive the telescopic pull rod 5 to deflect.

[0028] See also Figure 3As shown, in this embodiment, the winding mechanism 9 includes a winding drum 91, a servo motor 93, a telescopic locking mechanism 95 and a plurality of sleeves 92. The winding drum 91 is rotatably mounted on the bottom of the device chamber 11 through a bearing seat. The plurality of sleeves 92 are movably sleeved on the surface of the winding drum 91. The inner diameter of the sleeve 92 is larger than the outer diameter of the winding drum 91. One end of the pull rope 17 is wound around the surface of the sleeve 91 at a corresponding position. The servo motor 93 is fixedly mounted on the inner wall of the device chamber 11. The output shaft of the servo motor 93 is fixedly connected to one end of the winding drum 91. The telescopic locking mechanism 95 is used to lock any sleeve 92. When any sleeve 92 is fixed, by starting the servo motor 93, the servo motor 93 will drive the sleeve 92 to rotate, so that the corresponding pull rope 17 can be retracted, and the retraction of any upper drawer can be controlled.

[0029] See also Figure 3 and Figure 4 As shown, in this embodiment, the telescopic locking mechanism 95 includes an electric push rod 951 and a sliding plate 952. The electric push rod 951 is rotatably installed at the bottom of the device chamber 11. The piston rod of the electric push rod 951 is fixedly connected to the sliding plate 952. The sliding plate 952 is slidably inserted in the winding drum 91. Sliding grooves 94 are provided on both sides of the winding drum 91. Limiting protruding ribs 953 that are slidably connected to the corresponding sliding grooves 94 are fixedly installed at both ends of the sliding plate 952. Two protruding cones 92 are fixedly installed on the inner wall of the sleeve 92 in an axially symmetrical manner. When the electric push rod 951 is controlled to push and pull the sliding plate 952, the limiting protruding ribs 953 on the sliding plate 952 can be inserted into the corresponding position sleeve 92. At this time, starting the servo motor 93 can drive the winding drum 91 to rotate, and the sleeve 92 blocked by the limiting protruding ribs 953 can rotate with the rotation of the winding drum 91, thereby controlling the pull rope 17 at this position to pull the corresponding upper drawer to move.

[0030] In this embodiment, retaining rings 96 are fixedly installed on the surface of the winding drum 91 at both ends of the sleeve 92 to limit the position of the sleeve 92 and prevent the position of the sleeve 92 from moving.

[0031] In this embodiment, refer to Figure 5 As shown, the output shaft of the electric push rod 951 includes an outer shaft 957 and an inner shaft 958. A first groove matching the outer shaft 957 is provided in the sliding plate 952, and a second groove matching the end of the inner shaft 958 is provided in the first groove. The end of the inner shaft 958 is provided with outer teeth, and the inner wall of the second groove is provided with inner teeth matching the outer teeth. When in use, after the electric push rod 951 drives the limiting protruding rib 953 to be inserted into the corresponding position sleeve 92, the electric push rod 951 drives the inner shaft 958 to move to the left. At this time, the outer teeth are separated from the inner teeth, so that the rotation of the sleeve 92 can be limited without affecting the rotation of the winding drum 91.

[0032] In this embodiment, the telescopic pull rod 5 includes an L-shaped rod 51 and a telescopic rod 52. One end of the L-shaped rod 51 is rotatably connected to the side panel 4, and the other end of the L-shaped rod 51 is fixedly connected to one end of the telescopic rod 52. The other end of the telescopic rod 52 is fixedly connected to the turntable 7 at the corresponding position.

[0033] See also Figure 6 As shown, in this embodiment, a sleeve 41 is fixedly installed on one side surface of the side plate 4, an arc-shaped limit groove 42 is opened on the inner wall of the sleeve 41, one end of the L-shaped rod 51 is movably inserted in the sleeve 41, and a limit block 53 is fixedly installed on one end of the L-shaped rod 51, and the limit block 53 is inserted in the arc-shaped limit groove 42.

[0034] In this embodiment, in order to ensure the smooth movement of the pull rope 17, pressure rollers 13 are movably installed at the upper and lower ends of the opening 12, and the two pressure rollers 13 clamp the pull rope 17. Rollers 14 for supporting the pull rope 13 are movably installed at the opening 12 inside the device chamber 11.

[0035] In this embodiment, a limiting sleeve 954 is sleeved on the surface of the electric push rod 951, and the limiting sleeve 954 is fixedly installed at the bottom of the device chamber 11. An annular groove 955 is opened on the inner wall of the limiting sleeve 954. An annular rib 956 that is movably engaged with the annular groove 955 is fixedly installed on the surface of the electric push rod 951 to avoid the possibility of lateral movement of the electric push rod 951.

[0036] In this embodiment, a plurality of button switches are installed on the control panel 6, and the button switches are used to control the start and stop of the corresponding motor, servo motor 93, electric push rod 951 and cylinder 81, so that the staff can control the entry and exit of drawers 3 in different positions as needed.

[0037] The present invention can drive the drawer to move through the transmission roller, which is convenient for controlling the automatic entry and exit of the drawer. When the staff needs to check the components in the drawer at a high position, they only need to start the button switch corresponding to the upper drawer. The button switch starts the corresponding position motor to drive the upper drawer to move out. After the upper drawer is moved out, the upper drawer can be lowered to a suitable position by pulling the telescopic pull rod, and the upper drawer can be prevented from falling. The pull rope is twisted by the winding mechanism to ensure the stability of the upper drawer when it is raised and lowered, and the upper drawer can be pulled back into the accommodating opening, so that the staff does not need to climb a ladder to operate, the operation is simple, time-saving and labor-saving, and safety is improved.

[0038] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, the patent owner may make various variations or modifications within the scope of the appended claims. As long as they do not exceed the protection scope described in the claims of the present invention, they should be within the protection scope of the present invention.

Claims

1. An anti-drop mechanism for a drawer on a low-voltage electrical cabinet, comprising an electrical cabinet, wherein a plurality of receiving openings are provided in the electrical cabinet, and drawers are installed in the receiving openings in a pull-out manner. Features: A groove is provided at the bottom of the accommodating opening, and a transmission roller driven by a motor is rotatably installed in the groove, and the transmission roller is in rolling contact with the drawer. There are multiple upper drawers located on the upper part of the electrical cabinet, and side panels are fixed at both ends of the front surface of the upper drawers. Turntables are rotatably installed on both sides of the electrical cabinet flush with the upper drawers, and telescopic pull rods are fixedly connected between the turntables and the side panels. Lifting mechanisms are installed on both sides of the electrical cabinet below the turntables, and the lifting mechanisms are used to drive the telescopic pull rods to deflect. An apparatus chamber is provided on the inner surface of the electrical cabinet, and a winding mechanism is installed at the bottom of the apparatus chamber. Openings are provided on the surface of the apparatus chamber at the upper drawer position, and a pull rope is fixedly connected to the back of the upper drawer, and one end of the pull rope passes through the opening and is connected to the winding mechanism. A control panel is fixedly installed on one side of the electrical cabinet, and the control panel is used to control the start and stop of the lifting mechanism and the winding mechanism; The winding mechanism includes a winding drum, a servo motor, a telescopic locking mechanism and a plurality of sleeves. The winding drum is rotatably mounted on the bottom of the device chamber through a bearing seat. The plurality of sleeves are movably sleeved on the surface of the winding drum. One end of the pull rope is wound around the surface of the sleeve at a corresponding position. The servo motor is fixedly mounted on the inner wall of the device chamber. The output shaft of the servo motor is fixedly connected to one end of the winding drum. The telescopic locking mechanism is used to lock any sleeve. The telescopic locking mechanism includes an electric push rod and a sliding plate. The electric push rod is rotatably installed at the bottom of the device chamber. The piston rod of the electric push rod is fixedly connected to the sliding plate. The sliding plate is slidably inserted in the winding drum. Sliding grooves are opened on both sides of the winding drum. Limiting protruding ribs that are slidably connected to the sliding grooves at corresponding positions are fixedly installed at both ends of the sliding plate. Two protruding cones are fixedly installed on the inner wall of the sleeve in an axially symmetrical manner.

2. According to claim 1, the anti-drop mechanism for the drawer on the low-voltage electrical cabinet, Features: The lifting mechanism includes a cylinder and a tilting rod. The tilting rod is fixedly mounted on one end of the turntable away from the telescopic pull rod. The cylinder is movably hinged on the outer surface of the electrical cabinet. The cylinder is located below the tilting rod, and the piston shaft of the cylinder is movably hinged to the tilting rod.

3. According to claim 1, the anti-drop mechanism for the drawer on the low-voltage electrical cabinet, Features: Securing rings are fixedly mounted on the surface of the winding drum at both ends of the sleeve.

4. According to claim 1, the anti-drop mechanism for the drawer on the low-voltage electrical cabinet, Features: The telescopic pull rod comprises an L-shaped rod and a telescopic rod, one end of the L-shaped rod is rotatably connected to the side plate, the other end of the L-shaped rod is fixedly connected to one end of the telescopic rod, and the other end of the telescopic rod is fixedly connected to a turntable at a corresponding position.

5. According to claim 4, the anti-drop mechanism for the drawer on the low-voltage electrical cabinet, Features: A shaft sleeve is fixedly installed on one side surface of the side plate, an arc-shaped limit groove is opened on the inner wall of the shaft sleeve, one end of the L-shaped rod is movably inserted in the shaft sleeve, and a limit block is fixedly installed on one end of the L-shaped rod, and the limit block is inserted in the arc-shaped limit groove.

6. The anti-drop mechanism for a drawer on a low-voltage electrical cabinet according to claim 1, Features: Pressure rollers are movably installed at the upper and lower ends of the opening, and the two pressure rollers clamp the pull rope. Rollers for supporting the pull rope are movably installed at the opening position inside the device room.

7. The anti-drop mechanism for a drawer on a low-voltage electrical cabinet according to claim 1, Features: The surface of the electric push rod is sleeved with a limit sleeve, which is fixedly installed at the bottom of the device chamber. The inner wall of the limit sleeve is provided with an annular groove, and the surface of the electric push rod is fixedly installed with an annular rib that movably engages with the annular groove.

8. The anti-drop mechanism for a drawer on a low-voltage electrical cabinet according to claim 1, Features: A plurality of button switches are installed on the control panel, and the button switches are used to control the start and stop of the corresponding motor, servo motor, electric push rod and cylinder.

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