Elevator overload detection device

Abstract

The utility model provides an elevator overload detection device, which relates to the technical field of elevators, and comprises an elevator shaft, the two sides of the elevator shaft are connected with slide rails I, slide rails II are movably embedded in the two slide rails I, and an elevator car is connected between the opposite sides of the two slide rails II. When the interior of the elevator car is overloaded, the weight sensing weighing equipment body detects that the weight exceeds a set threshold value, the warning lamp starts to flash for warning, the surface of the contact makes contact with the surface of the contact base, the alarm starts to give an alarm for warning, and when the spring damper is used for a long time and cannot be recovered to the initial state, the spring damper stops working. When the weight sensing and weighing equipment body detects that a numerical value does not reach a set threshold value, the contact head is contacted with the surface of the contact head base, at the moment, the warning lamp does not flash for warning, and the alarm starts to give an alarm, so that the working state of internal parts is found in time, repair and maintenance are carried out in time, and dangerous conditions are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to an elevator overload detection device. Background Art

[0002] An elevator is a permanent transportation device that serves several specific floors in a building. Its car runs on at least two rows of rigid tracks that are perpendicular to the horizontal plane or have an inclination angle of less than 15° to the plumb line. If the elevator is overloaded, it will be dangerous. At this time, an overload detection device is needed. The overload detector is a device that performs overload detection in the elevator. As the number of people inside the elevator car increases, the downward pressure of the elevator car increases until it contacts the overload detector and triggers it.

[0003] In the prior art, for example, Chinese patent number: CN219448928U discloses an elevator overload detection device, including an elevator shaft and an auxiliary mechanism, an elevator car is arranged inside the elevator shaft, a bottom plate is arranged below the elevator car, an overload detector body is installed on the top of the bottom plate, an elastic mechanism is arranged above the bottom plate, the auxiliary mechanism includes a connecting plate, a plurality of first springs, a first damping rod and a first damping sleeve, the connecting plate is arranged between the elevator car and the bottom plate, the connecting plate and the elevator car are arranged separately, a plurality of first springs are fixedly connected between the elevator car and the connecting plate, a plurality of first damping sleeves are fixedly connected to the top of the connecting plate, and a plurality of first damping rods are fixedly connected to the bottom of the elevator car. The utility model utilizes the setting of the auxiliary mechanism and the elastic mechanism, and through the cooperation of the first spring and the elastic mechanism, the downward impact force of the elevator car can be double-mitigated, and the overload detector is contacted through the connecting plate to avoid direct contact between the elevator car and the overload detector, so that the overload detector is not easily damaged.

[0004] However, in actual use, the above patent lacks protection for internal parts, which can easily cause damage to the internal parts under long-term use or overload conditions. On the other hand, it is not easy to detect the working status and wear of the internal parts in time, which can easily lead to danger. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an elevator overload detection device, comprising: an elevator shaft, wherein slide rails 1 are connected to both sides of the elevator shaft, slide rails 2 are movably embedded in the two slide rails 1, an elevator car is connected between the opposite sides of the two slide rails 2, a protection box 1 is placed at the bottom of the inner cavity of the elevator car, a movable cover plate is movably embedded in the inner side of the protection box 1, a weight-sensing weighing device body is placed on the surface of the movable cover plate, and four shock-absorbing devices and an overload detection component are connected to the bottom end of the inner cavity of the protection box 1.

[0007] As a preferred implementation, a control terminal is installed on one side of the inner cavity of the elevator car, and a control panel, a warning light, and an alarm are installed on the surface of the control terminal.

[0008] As a preferred embodiment, the shock absorbing device includes a fixed sleeve, which is connected to the bottom of an inner cavity of a protective box, a movable sleeve is movably embedded in the inner side of the fixed sleeve, a spring damper is installed at the bottom end of the inner cavity of the fixed sleeve, the other end of the spring damper is connected to the top of the inner cavity of the movable sleeve, and the movable sleeve is connected to the bottom of the movable cover plate.

[0009] As a preferred embodiment, the overload detection component includes a protective box 2, which is connected to the bottom of the inner cavity of the protective box 1, and both sides of the inner cavity of the protective box 2 are connected to a limit plate 1 and a limit plate 2, and three docking contact bases are installed at the bottom of the inner cavity of the protective box 2.

[0010] As a preferred embodiment, a positioning block is movably embedded inside the second protective box, both sides of the positioning block are connected to limiting plates three, and the bottom end of the positioning block is connected to a docking contact.

[0011] As a preferred implementation, the two limit plates 1 and the two limit plates 2 are evenly divided into two groups, and the two limit plates 3 are respectively movable between the two groups of limit plates 1 and limit plates 2.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, the control terminal is electrically connected to the control panel, the warning light and the alarm. The detection threshold of the contact head base and the weight sensing weighing device body is set according to the actual load threshold. When the elevator car is overloaded, the bottom end of the movable sleeve contacts the bottom of the inner cavity of the fixed sleeve. At this time, the spring damper is compressed to the maximum limit. At this time, when the bottom end of the limit plate three contacts the surface of the limit plate two, the surface of the contact head just contacts the surface of the contact head base, and the alarm starts to alarm. At the same time, the weight sensing weighing device body detects that the weight exceeds the set threshold, and the warning light starts to flash to warn. Through such a setting, the spring damper is in a protective state, reducing the contact between the spring damper and the humid air inside the elevator shaft, delaying the oxidation time, and increasing the service life. At the same time, it is avoided that when overloaded, the pressure of the contact head on the surface of the contact head base is too large, causing damage to the contact head base.

[0014] 2. According to the utility model, after a long period of use, the elevator usually needs regular inspection and maintenance. When the spring damper cannot be restored to its original state after a long period of use, the contact head will contact the surface of the contact head base when the detection value of the weight sensing weighing device body has not reached the set threshold. At this time, the warning light has not flashed yet, but the alarm has already started to sound the alarm. Through such a setting, the working status of the internal parts can be discovered in time, and inspection and maintenance can be carried out in time to avoid dangerous situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional structural diagram of an elevator overload detection device provided by the utility model;

[0016] Figure 2 A schematic diagram of the internal structure of an elevator overload detection device provided by the utility model;

[0017] Figure 3 A schematic diagram of the structure of a protective box of an elevator overload detection device provided by the utility model;

[0018] Figure 4 A schematic diagram of a shock absorbing structure of an elevator overload detection device provided by the utility model;

[0019] Figure 5 The utility model provides a detection structure schematic diagram of an elevator overload detection device.

[0020] Legend:

[0021] 1. Elevator shaft; 2. Slide rail 1; 3. Slide rail 2; 4. Elevator car; 5. Control terminal; 6. Control panel; 7. Warning light; 8. Alarm; 9. Protective box 1; 901. Movable cover; 10. Weight-sensing weighing device body; 11. Shock-absorbing device; 1101. Fixed sleeve; 1102. Movable sleeve; 1103. Spring damper; 12. Overload detection component; 1201. Protective box 2; 1202. Limit plate 1; 1203. Limit plate 2; 1204. Butt contact base; 1205. Positioning block; 1206. Limit plate 3; 1207. Butt contact. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-5 The utility model provides a technical solution: an elevator overload detection device, comprising: an elevator shaft 1, both sides of the elevator shaft 1 are connected with a slide rail 2, the interiors of the two slide rails 2 are movably embedded with a slide rail 3, an elevator car 4 is connected between the opposite sides of the two slide rails 23, a protection box 9 is placed at the bottom of the inner cavity of the elevator car 4, a movable cover plate 901 is movably embedded inside the protection box 9, a weight-sensing weighing device body 10 is placed on the surface of the movable cover plate 901, and four shock-absorbing devices 11 and an overload detection component 12 are connected to the bottom end of the inner cavity of the protection box 9.

[0024] Specifically: slide rail 1 2 and slide rail 2 3 engage with each other to limit the elevator car 4, protection box 1 9 protects the shock absorbing device 11 and the overload detection component 12, and the movable cover 901 moves on the inner side of the top opening of the protection box 1 9. When the two sides of the bottom end of the movable cover 901 contact the two sides of the top opening of the protection box 1 9, the docking contact 1207 contacts the surface of the docking contact base 1204, and the alarm 8 starts to alarm.

[0025] In one embodiment, a control terminal 5 is installed on one side of the inner cavity of the elevator car 4, and a control panel 6, a warning light 7, and an alarm 8 are installed on the surface of the control terminal 5.

[0026] Specifically: the control terminal 5 is used for operation, the warning light 7 and the alarm 8. When the weight detected by the weight sensing weighing equipment body 10 and the contact head base 1204 exceeds the weight threshold set by the control terminal 5, the control terminal 5 controls the warning light 7 to flash and the alarm 8 to sound an alarm.

[0027] In one embodiment, the shock absorbing device 11 includes a fixed sleeve 1101, which is connected to the bottom of the inner cavity of the protective box 9, and a movable sleeve 1102 is movably embedded in the inner side of the fixed sleeve 1101. A spring damper 1103 is installed at the bottom end of the inner cavity of the fixed sleeve 1101, and the other end of the spring damper 1103 is connected to the top of the inner cavity of the movable sleeve 1102, and the movable sleeve 1102 is connected to the bottom of the movable cover plate 901.

[0028] Specifically: the inner wall of the fixed sleeve 1101 and the surface of the movable sleeve 1102 fit together, and when there is no one in the elevator car 4 and the spring damper 1103 is in a static state, the movable sleeve 1102 will not separate from the fixed sleeve 1101, and the spring damper 1103 is always in a protective state, reducing the contact between the spring damper 1103 and the humid air inside the elevator shaft 1, delaying the oxidation time, and increasing the service life.

[0029] In one embodiment, the overload detection component 12 includes a protective box 1201, which is connected to the bottom of the inner cavity of the protective box 1 9. Both sides of the inner cavity of the protective box 1201 are connected to a limit plate 1202 and a limit plate 2 1203. Three docking contact bases 1204 are installed at the bottom of the inner cavity of the protective box 1201.

[0030] Specifically: the second protection box 1201 and the positioning block 1205 engage with each other to protect the docking contact base 1204. When the docking contact 1207 contacts the surface of the docking contact base 1204, the docking contact base 1204 works and the alarm 8 starts to sound an alarm.

[0031] In one embodiment, a positioning block 1205 is movably embedded inside the second protection box 1201 , both sides of the positioning block 1205 are connected to the limiting plate 3 1206 , and the bottom end of the positioning block 1205 is connected to the docking contact 1207 .

[0032] Specifically: when the bottom end of the limit plate three 1206 contacts the surface of the contact head base 1204, the surface of the contact head 1207 just contacts the surface of the contact head base 1204, so as to avoid excessive pressure of the contact head 1207 on the surface of the contact head base 1204 when overloaded, thereby causing damage to the contact head base 1204; and when there is no one inside the elevator car 4 and the spring damper 1103 is in a static state, the top end of the limit plate three 1206 just fits with the bottom end of the limit plate one 1202, and one side of the limit plate three 1206 fits with the inner wall of the protective box two 1201.

[0033] In one embodiment, the two limiting plates 1 1202 and the two limiting plates 2 1203 are evenly divided into two groups, and the two limiting plates 3 1206 are respectively movable between the two groups of limiting plates 1 1202 and limiting plates 2 1203 .

[0034] Specifically: the limiting plate 1 1202 and the limiting plate 2 1203 perform movable limiting on the limiting plate 3 1206 .

[0035] Working principle: The control terminal 5 is electrically connected to the control panel 6, the warning light 7, and the alarm 8. The detection threshold of the weight-sensing weighing device body 10 is set according to the actual load threshold. When the elevator car 4 is overloaded, the bottom end of the movable sleeve 1102 contacts the bottom of the inner cavity of the fixed sleeve 1101. At this time, the spring damper 1103 is compressed to the maximum limit. At this time, when the bottom end of the limit plate three 1206 contacts the surface of the limit plate two 1203, the surface of the contact head 1207 just contacts the surface of the contact head base 1204, and the alarm 8 starts to alarm. At the same time, the weight-sensing weighing device body 10 detects that the weight exceeds the set threshold, and the warning light 7 starts to flash to warn. Through such a setting, the spring damper 1103 is in a protective state to reduce the elasticity. The spring damper 1103 is in contact with the humid air inside the elevator shaft 1, which delays the oxidation time and increases the service life. At the same time, it avoids excessive pressure of the contact head 1207 on the surface of the contact head base 1204 when overloaded, causing damage to the contact head base 1204; after a long period of use, the elevator usually needs to be inspected and maintained regularly. When the spring damper 1103 cannot be restored to its original state after a long period of use, the contact head 1207 will contact the surface of the contact head base 1204 when the detection value of the weight sensing weighing device body 10 does not reach the set threshold. At this time, the warning light 7 has not yet flashed to warn, and the alarm 8 has already started to alarm. Through such a setting, the working status of internal parts can be discovered in time, and inspection and maintenance can be carried out in time to avoid dangerous situations.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An elevator overload detection device, characterized in that: include: An elevator shaft (1), wherein both sides of the elevator shaft (1) are connected to a slide rail (2), and slide rails (3) are movably embedded in the interior of the two slide rails (2), and an elevator car (4) is connected between the opposite sides of the two slide rails (3). A protection box (9) is placed at the bottom of the inner cavity of the elevator car (4), and a movable cover (901) is movably embedded in the inner side of the protection box (9), and a weight-sensing weighing device body (10) is placed on the surface of the movable cover (901), and the bottom end of the inner cavity of the protection box (9) is connected to four shock-absorbing devices (11) and an overload detection component (12).

2. An elevator overload detection device according to claim 1, characterized in that: A control terminal (5) is installed on one side of the inner cavity of the elevator car (4), and a control panel (6), a warning light (7), and an alarm (8) are installed on the surface of the control terminal (5).

3. An elevator overload detection device according to claim 1, characterized in that: The shock absorbing device (11) comprises a fixed sleeve (1101), the fixed sleeve (1101) is connected to the bottom of the inner cavity of the protective box (9), a movable sleeve (1102) is movably embedded inside the fixed sleeve (1101), a spring damper (1103) is installed at the bottom end of the inner cavity of the fixed sleeve (1101), the other end of the spring damper (1103) is connected to the top end of the inner cavity of the movable sleeve (1102), and the movable sleeve (1102) is connected to the bottom of the movable cover plate (901).

4. An elevator overload detection device according to claim 1, characterized in that: The overload detection component (12) comprises a second protection box (1201), wherein the second protection box (1201) is connected to the bottom of the inner cavity of the first protection box (9), and both sides of the inner cavity of the second protection box (1201) are connected to a limit plate (1202) and a limit plate (1203), and three docking contact bases (1204) are installed at the bottom of the inner cavity of the second protection box (1201).

5. An elevator overload detection device according to claim 4, characterized in that: A positioning block (1205) is movably embedded inside the second protection box (1201), both sides of the positioning block (1205) are connected to a limiting plate three (1206), and the bottom end of the positioning block (1205) is connected to a docking contact (1207).

6. An elevator overload detection device according to claim 5, characterized in that: The two limit plates one (1202) and the two limit plates two (1203) are evenly divided into two groups, and the two limit plates three (1206) are respectively movable between the two groups of limit plates one (1202) and limit plates two (1203).

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