Landing door unlocking assembly of simple elevator

Abstract

According to the technical scheme, the landing door unlocking assembly is characterized in that the landing door unlocking assembly comprises a base, an electric push rod is installed on the upper surface of the base and comprises a rod body, a transverse connecting arm is installed on the rod body, and a collision bow is fixed to the tail end of the connecting arm; an upper limiting strip and a lower limiting strip which are arranged in parallel up and down are fixed to the upper surface of the base, the upper limiting strip and the rod body are arranged in parallel, a gap is formed between the lower limiting strip and the upper limiting strip, the connecting arm slides between the lower limiting strip and the upper limiting strip in a limited mode, and the connecting arm is limited through the upper limiting strip and the lower limiting strip so that the connecting arm can not rotate. Therefore, the collision bow can stably move back and forth on the linear track, and faults of the elevator are reduced.

Description

Technical Field

[0001] The utility model relates to a landing door unlocking component of a simple elevator. Background Art

[0002] A simple lift is a lifting machinery used to transport goods in the shaft, which uses a traction machine, winch, electric hoist, hydraulic pump station, etc. as the driving device and drives the cargo box through components such as wire ropes, gear racks, chains or hydraulic cylinders.

[0003] Due to the requirements of design specifications, the floor doors of simple elevators must be equipped with mechanical interlocking and electrical interlocking devices. For example, a Chinese patent document with a publication number of CN203411210U was retrieved, and its specification embodiment records "including an electric push rod motor 1, an electric push rod motor base 2, an electric push rod motor extension arm 3 and a floor door unlocking collision bow 4, and is composed of a floor door unlocking collision bow 4"; the technical solution of the prior art has a technical defect when used, there is a loose gap between the telescopic rod and the outer shell of the electric push rod, and the electric push rod will have a slight rotation when it is extended and retracted. The rotation of the push rod will drive the collision bow to rotate synchronously, especially after the elevator has been running for a long time, the amplitude of the collision bow being rotated by the synchronous belt increases, thereby causing the elevator to malfunction. Utility Model Content

[0004] The purpose of the utility model is to provide a floor door unlocking component for a simple elevator, which uses upper and lower limit bars to limit the connecting arm so that the connecting arm cannot rotate, thereby allowing the impact bow to move back and forth stably on a straight track, reducing elevator failures.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A floor door unlocking component of a simple elevator comprises a base, an electric push rod is installed on the upper surface of the base, the electric push rod comprises a rod body, the rod body is installed with a horizontal connecting arm, a striking bow is fixed to the end of the connecting arm, an upper limit bar and a lower limit bar arranged in parallel up and down are fixed to the upper surface of the base, the upper limit bar and the rod body are arranged in parallel, the lower limit bar and the upper limit bar have a gap, and the connecting arm limits sliding between the gap between the lower limit bar and the upper limit bar.

[0007] Preferably, positioning blocks are clamped at both ends of the lower limit bar and the upper limit bar, the lower limit bar and the upper limit bar are fixed with screws, and the thickness of the positioning blocks is greater than the thickness of the connecting arm.

[0008] Preferably, the difference between the thickness of the positioning block and the thickness of the connecting arm is less than 0.1 mm.

[0009] Preferably, an oil guide groove is provided on the upper surface of the upper limit bar, a vertical oil delivery hole is provided on the upper limit bar, and the oil guide groove is inclined toward the oil delivery hole; when the electric push rod is in the retracted state, the connecting arm blocks the lower end of the oil delivery hole.

[0010] Preferably, the lower limit bar and the upper limit bar are provided with a connecting hole group, the upper end of the connecting hole group is connected to the oil guide groove; the lower limit bar is provided with an oil outlet hole group connected to the lower end of the connecting hole group; the outlet of the oil outlet hole group is located on the upper surface of the lower limit bar; when the electric push rod is in the retracted state, the connecting arm blocks the outlet of the oil outlet hole group.

[0011] Preferably, the connecting hole group includes an upper positioning ring arranged on the lower end surface of the upper limit strip, and the positioning ring is connected to the oil guide groove; the connecting hole group includes a lower positioning ring arranged on the lower end surface of the lower limit strip, and the connecting hole group includes a vertical hole opened in the positioning block, the upper positioning ring is positioned and inserted in the upper end of the vertical hole, and the lower positioning ring is inserted in the lower end of the vertical hole.

[0012] Preferably, a connecting foot is fixed to the lower surface of the base, and an inclined rod is fixed between the connecting foot and the lower surface of the base.

[0013] In summary, the utility model has the following beneficial effects:

[0014] (1) The structure of this design is simple, but its practical performance is extremely strong. A limiting structure is used to limit the rotation of the connecting arm, thereby achieving the purpose of preventing the collision bow from rotating.

[0015] This design uses the same upper surface of the base for installation and fixation, which can unify the base surface for installation, so that the height of the connecting arm on the base and the height of the two limit bars on the base can be positioned, so that when the unlocking components are installed in large quantities, the installation of the connecting arm and the limit bars is smoother and more accurate. The advantage of this is that if the installation error between the connecting arm and the upper limit bar and the lower limit bar is too large, it will cause increased friction between the connecting arm and the limit bar. The high frequency of use of the elevator will accelerate the wear of the connecting arm. By installing on the same reference surface of this design, the installation error can be reduced, the service life of the connecting arm can be extended, and the accuracy of use can be improved.

[0016] (2) The function of the positioning block is to control the height difference between the upper and lower limit bars to facilitate the smooth sliding of the connecting arm. The screw connection of the positioning block allows the upper and lower limit bars to be freely disassembled and assembled on site, and the gap accuracy is still maintained after the second assembly. This design is conducive to the installation of the unlocking component in a small space on site, and can ensure the accuracy of the unlocking component after installation.

[0017] (3) The function of the inclined oil guide groove is to add lubricating oil so that the lubricating grease can flow slowly to the connecting arm.

[0018] (4) The connecting hole group and the oil outlet hole group are used to add lubricating oil to the lower limit strip.

[0019] (5) The positioning cooperation between the locating ring and the vertical hole has the following effects: one is to allow the lubricating oil to flow into the channel; the other is to allow the locating block and the upper limit strip to be positioned and installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the structure of the unlocking component in the embodiment;

[0021] Figure 2 is a top view of the connecting arm ejection in the embodiment;

[0022] Figure 3 is a top view of the connecting arm in the embodiment retracted to block the oil delivery hole;

[0023] Figure 4 yes Figure 3 Sectional view at AA;

[0024] Figure 5 yes Figure 4 Enlarged view of part B in .

[0025] In the figure:

[0026] 1. Base;

[0027] 2. Electric push rod; 21. Rod body;

[0028] 3. Connecting arm;

[0029] 4. Hit the bow;

[0030] 51. Upper limit bar; 52. Lower limit bar; 53. Positioning block; 54. Screw;

[0031] 61. Oil guide groove; 62. Oil delivery hole;

[0032] 7. Connecting feet;

[0033] 8. Oblique rod;

[0034] 9. Connecting hole group; 91. Upper positioning ring; 92. Lower positioning ring; 93. Vertical hole;

[0035] 101. Oil outlet hole group. DETAILED DESCRIPTION

[0036] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0037] Embodiment, a landing door unlocking assembly of a simple elevator, referring to Figure 1-Figure 5, including a base 1, an electric push rod 2 is installed on the upper surface of the base 1, the electric push rod 2 includes a rod body 21, the rod body 21 is installed with a horizontal connecting arm 3, a collision bow 4 is fixed at the end of the connecting arm 3, and the cross section of the connecting arm 3 is a concave structure.

[0038] A connecting foot 7 is fixed to the lower surface of the base 1 , and an inclined rod 8 is welded and fixed between the connecting foot 7 and the lower surface of the base 1 .

[0039] An upper limit bar 51 and a lower limit bar 52 are fixed to the upper surface of the base 1 and are arranged in parallel. The upper limit bar 51 is arranged parallel to the rod body. There is a gap between the lower limit bar 52 and the upper limit bar 51, and the connecting arm 3 is limited and slidable between the lower limit bar 52 and the upper limit bar 51.

[0040] The lower limit bar 52 and the upper limit bar 51 are clamped with positioning blocks 53 at both ends, and the lower limit bar 52 and the upper limit bar 51 are fixed with screws 54. The thickness of the positioning block 53 is greater than the thickness of the connecting arm 3; the difference between the thickness of the positioning block 53 and the thickness of the connecting arm 3 is 0.02mm, and the thickness difference in other embodiments can be 0.04mm or 0.06mm, etc.

[0041] An oil guide groove 61 is formed on the upper surface of the upper limit bar 51, and a vertical oil delivery hole 62 is formed on the upper limit bar 51. The oil guide groove 61 is inclined toward the oil delivery hole 62.

[0042] When the electric push rod 2 is in the retracted state, the connecting arm 3 blocks the lower end of the oil delivery hole 62 .

[0043] A connecting hole group is provided on one side of the lower limit bar 52 and the upper limit bar 51, and the upper end of the connecting hole group is connected to the oil guide groove 61; the lower limit bar 52 is provided with an oil outlet hole group 101 connected to the lower end of the connecting hole group; the outlet of the oil outlet hole group 101 is located on the upper surface of the lower limit bar 52; when the electric push rod 2 is in the retracted state, the connecting arm 3 blocks the outlet of the oil outlet hole group 101.

[0044] The communication hole group includes an upper positioning ring 91 arranged on the lower end surface of the upper limit bar 51, and the positioning ring is connected to the oil guide groove 61;

[0045] The positioning ring is located at the lower end of the oil delivery hole 62 .

[0046] The connecting hole group includes a lower positioning ring 92 arranged on the lower end surface of the lower limit bar 52.

[0047] The connecting hole group includes a vertical hole 93 opened in the positioning block 53, the vertical hole is opened in the positioning block 53 on one side of the lower end of the oil guide groove 61, the upper positioning ring 91 is positioned and inserted in the upper end of the vertical hole 93, and the lower positioning ring 92 is inserted in the lower end of the vertical hole 93.

[0048] The upper positioning ring 91, the lower positioning ring 92 and the vertical hole 93 are positioned and inserted, so that the installation of the upper limit bar 51 and the lower limit bar 52 is more accurate and convenient, and the oil delivery effect is also achieved.

[0049] The connecting hole group and the oil outlet hole group 101 cooperate to form a connecting vessel structure, and the lubricating oil flows down from the top and then flows out from the outlet.

[0050] In this design, when the connecting arm 3 retracts, the oil outlet is blocked, so the oil will not overflow in large quantities, because the unlocking action time is short, and the lubricating oil can be grease, which flows slowly and has a long shelf life; since the elevator requires regular safety inspections, maintenance personnel can add lubricating grease in time when it is insufficient.

[0051] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A landing door unlocking assembly for a simple elevator, comprising a base (1), an electric push rod (2) being mounted on the upper surface of the base (1), the electric push rod (2) comprising a rod body (21), a transverse connecting arm (3) being mounted on the rod body (21), a striker (4) being fixed at the end of the connecting arm (3), wherein: An upper limit bar (51) and a lower limit bar (52) arranged in parallel are fixed to the upper surface of the base (1); the upper limit bar (51) and the rod body (21) are arranged in parallel; there is a gap between the lower limit bar (52) and the upper limit bar (51); and the connecting arm (3) is limitedly slidable between the gap between the lower limit bar (52) and the upper limit bar (51).

2. The landing door unlocking assembly of the simple elevator according to claim 1 is characterized in that: Positioning blocks (53) are clamped at both ends of the lower limit bar (52) and the upper limit bar (51), the lower limit bar (52) and the upper limit bar (51) are fixed with screws (54), and the thickness of the positioning block (53) is greater than the thickness of the connecting arm (3).

3. The landing door unlocking assembly of the simple elevator according to claim 2 is characterized in that: The difference between the thickness of the positioning block (53) and the thickness of the connecting arm (3) is less than 0.1 mm.

4. The landing door unlocking assembly of the simple elevator according to claim 2 is characterized in that: An oil guide groove (61) is formed on the upper surface of the upper limit bar (51), a vertical oil delivery hole (62) is formed on the upper limit bar (51), and the oil guide groove (61) is inclined toward the oil delivery hole (62); When the electric push rod (2) is in a retracted state, the connecting arm (3) blocks the lower end of the oil delivery hole (62).

5. The landing door unlocking assembly of the simple elevator according to claim 4 is characterized in that: The lower limit strip (52) and the upper limit strip (51) are provided with a communication hole group, and the upper end of the communication hole group is connected to the oil guide groove (61); The lower limit strip (52) is provided with an oil outlet hole group (101) communicating with the lower end of the communication hole group; The outlet of the oil outlet hole group (101) is located on the upper surface of the lower limit strip (52); When the electric push rod (2) is in a retracted state, the connecting arm (3) blocks the outlet of the oil outlet hole group (101).

6. The landing door unlocking assembly of the simple elevator according to claim 5 is characterized in that: The communication hole group comprises an upper positioning ring (91) arranged on the lower end surface of the upper limit bar (51), and the positioning ring is connected to the oil guide groove (61); The communication hole group includes a lower positioning ring (92) arranged on the lower end surface of the lower limit strip (52). The communication hole group comprises a vertical hole (93) opened in the positioning block (53), an upper positioning ring (91) is positioned and inserted in the upper end of the vertical hole (93), and a lower positioning ring (92) is inserted in the lower end of the vertical hole (93).

7. The landing door unlocking assembly of the simple elevator according to claim 1 is characterized in that: A connecting foot (7) is fixed on the lower surface of the base (1), and an inclined rod (8) is fixed between the connecting foot (7) and the lower surface of the base (1).

Images