Modularized assembly of elevator

Abstract

The utility model relates to a modularized component of an elevator, which comprises a locking part arranged at the end part of a pivot. Prismatic counter bores are formed in the outer ends of the shaft holes of the shear fork arms. A prism section and an external thread section are formed at the end of the pivot. The locking part comprises an axial locking block, a thrust spring, an iron ring, an end cap and an electromagnet part. And a cylinder cavity of the cylinder part of the axial locking block is a prismatic through hole and is matched with the prismatic section. And one end of the thrust spring is in contact with a radial flange arranged at the end part of the barrel body part. And a prismatic surface which can be matched with the prismatic counter bore is formed on the outer peripheral surface of the radial flange. The iron ring is fixed on the cylinder body part, and the electromagnet part is fixed in the end cap. And the end cap can be matched with the external thread section. A transmission unit composed of the electromagnet part, the iron ring and the thrust spring can enable the axial locking block to move along a straight line, and the radial flange can be inserted into and moved out of the prism-shaped counter bore. The scissor fork arm and the pivot can be selectively locked, and the problem that when the elevator loses power, falling may occur is solved.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, specifically to a modular elevator component. Background Technology

[0002] Scissor lifts are widely used in various industries due to their advantages such as simple structure, low manufacturing cost, fast lifting speed, and stable operation. However, existing scissor lifts lack fall protection. When the power system malfunctions, the driving force that enables the two pivot-matched scissor arms to rotate relative to each other and maintain a relatively fixed state can suddenly be lost. This can easily lead to a sudden and significant drop of the support platform located at the top of the lift, causing a fall accident. Utility Model Content

[0003] To address the issue of lifts lacking anti-fall functionality, this invention provides a modular lift assembly that can selectively lock the scissor arms and pivots, effectively preventing the supporting platform from falling when the lift loses power.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a modular component of a lifting platform, including a pair of scissor arms matched by a pivot and a pair of locking parts correspondingly configured at both ends of the pivot.

[0005] Prismatic countersunk holes are formed at the outer ends of the shaft holes of the scissor arms.

[0006] At both ends of the pivot body, prism segments and external thread segments are formed sequentially from the inside to the outside.

[0007] The locking part includes an axial locking block, a thrust spring, an iron ring, an end cap, and an electromagnet part.

[0008] The axial locking block includes a cylindrical portion, a radial flange formed at one end of the cylindrical portion with its outer peripheral surface shaped as a prism, and an external threaded flange formed at the other end of the cylindrical portion. The cylindrical cavity of the cylindrical portion is a prism-shaped through hole, allowing the cylindrical portion to be fitted onto the prism section and to reciprocate axially relative to the pivot.

[0009] The thrust spring is fitted onto the cylindrical part, with one end in contact with the inner end face of the radial flange.

[0010] The iron ring is fixedly mounted on the external threaded flange by a threaded structure.

[0011] An inner bottom boss is formed on the inner bottom surface of the end cap, a countersunk hole is formed on the inner bottom boss, and at least two-stage threaded countersunk holes are formed on the inner bottom surface of the countersunk hole.

[0012] The electromagnet portion mates with a threaded countersunk hole on the end cap, near the bottom surface of the countersunk hole, thus fixing the electromagnet portion relatively within the end cap. Another threaded countersunk hole on the end cap mates with an external threaded section on the pivot, thus fixing the end cap to the end of the pivot. The end face of the inner bottom boss can contact the other end of the thrust spring and apply pressure to the thrust spring, causing the thrust spring to push the axial locking block to move, thereby pressing the radial flange into the prismatic countersunk hole. The prismatic surface of the radial flange can establish a profile contact matching relationship with the prismatic countersunk hole.

[0013] The inner diameter of the countersunk hole is not less than the outer diameter of the iron ring and not less than the outer diameter of the cylindrical part.

[0014] When the electromagnet is energized, the magnetic force generated causes the iron ring, along with the axial locking block, to move relative to the pivot towards the side away from the scissor arms, causing the radial flange to move out of the prismatic countersunk hole and remain in that state. During this time, the thrust spring is further compressed, and the two scissor arms can rotate relative to each other.

[0015] When the electromagnet is de-energized, the magnetic attraction disappears, and the thrust spring can push against the radial flange, causing the axial locking block to move relative to the pivot towards the side closer to the scissor arm, so that the radial flange presses against the port of the prismatic countersunk hole.

[0016] Optionally, a tapered countersunk hole is formed on the opposite end faces of the two scissor arms and at the port of the shaft hole. A skirt is formed at the axial center of the shaft body. After the two scissor arms are matched with the shaft body, the skirt can establish a profile contact matching relationship with the two interlocking tapered countersunk holes, and preferably a clearance matching relationship.

[0017] By setting the skirt and the tapered countersunk hole, the axial position between the two scissor arms and the shaft body can be restricted, preventing excessive axial movement of the scissor arms relative to the shaft body, which would adversely affect the locking function of the locking part, and ensuring the stability and reliability of the locking part in functioning.

[0018] Optionally, an annular axial flange is formed on the radial flange at the end face opposite to the cylindrical portion.

[0019] A light column segment is formed between the shaft body and the prism segment. The outer diameter of the light column segment is the same as the inner diameter of the axial flange. The outer diameter of the axial flange is not greater than the outer diameter of the shaft body.

[0020] After assembly, the outer end of the light column segment can remain inserted into the axial flange. When the axial locking block moves relative to the prism segment, the length of the light column segment extending into the axial flange will change in real time.

[0021] The improved structure described above ensures that both ends of the axial locking block remain in an effective supported state, enhancing the guiding stability and rigidity of its axial reciprocating movement. This helps to ensure that the radial flange at the end of the axial locking block can be stably inserted into and removed from the prism-shaped countersunk hole even after long-term use, allowing the prism surface to selectively contact and disengage from the inner circumferential surface of the prism-shaped countersunk hole.

[0022] Optionally, an axially extending end is formed on the free end face of the external thread section.

[0023] A through hole is formed on the end cap for the end portion to pass through. A pin hole is provided on the end portion, and a pin is provided in the pin hole to lock the end cap to the end of the pivot.

[0024] Optionally, an elastic portion is fixedly provided on the port face of the end cap. After the end cap is fixed to the end of the pivot, the elastic portion can contact the surface on the scissor arm located around the prism-shaped countersunk hole.

[0025] The elastic part can be one or more elastic sealing rings.

[0026] Optionally, the prism-shaped through hole is a hexagonal prism through hole, and correspondingly, the prism segment is a hexagonal prism segment.

[0027] Optionally, the prism face is an octagonal face, and correspondingly, the prism-shaped countersunk hole is an octagonal countersunk hole.

[0028] Optionally, the prism face has N facets, and correspondingly, the prism-shaped countersunk hole is an N-facet countersunk hole, where N is an integer and not less than eight.

[0029] The beneficial effects of this utility model are: it provides a modular component for a lifting platform, which can also be called a scissor arm pivot matching component, which can selectively lock the scissor arm and the pivot, so that the scissor arm cannot rotate relative to the pivot. When the lifting platform loses power, it can prevent the two scissor arms matched by the pivot from rotating relative to each other or from rotating significantly, thereby preventing the supporting platform from falling. Attached Figure Description

[0030] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0031] Figure 2 This is a schematic diagram of the split structure.

[0032] Figure 3 This is a side view of the pivot structure.

[0033] Figure 4 This is a schematic diagram of the cross-sectional structure of the axial locking block.

[0034] Figure 5 This is a schematic diagram of the left-side structure of the axial locking block.

[0035] In the figure: 10 Scissor arm one, 20 Scissor arm two, 101 Shaft hole, 102 Prismatic countersunk hole, 103 Conical countersunk hole; 30 Pivot, 31 Shaft body, 311 Skirt, 32 Smooth column section, 33 Prismatic section, 34 External thread section, 35 End.

[0036] 40 Axial locking block, 41 Cylindrical part, 411 Prismatic through hole, 42 Radial flange, 421 Prismatic surface, 43 External thread flange, 44 Axial flange; 50 Thrust spring; 60 Iron ring; 70 End cap, 71 Inner bottom boss, 72 Countersunk hole, 73 Threaded countersunk hole one, 74 Threaded countersunk hole two, 75 Through hole; 80 Electromagnet part. Detailed Implementation

[0037] The structures, proportions, and sizes shown in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, terms such as "upper," "lower," "front," "rear," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0038] like Figures 1 to 5 The illustrated modular component of a lift is specifically a scissor arm pivot matching component that enables modular manufacturing. It includes a pair of scissor arms (i.e., scissor arm 10 and scissor arm 20 shown in the figure) matched by a pivot 30 and a pair of locking parts correspondingly arranged at the left and right ends of the pivot 30.

[0039] Prismatic countersunk holes 102 are formed at the outer end (left end) of the shaft hole 101 of the first scissor arm 10 and at the outer end (right end) of the shaft hole 101 of the second scissor arm 20. A tapered countersunk hole 103 is formed on the opposite surfaces of the first scissor arm 10 and the second scissor arm 20 at the port of the shaft hole 101.

[0040] At both ends of the shaft body 31 of the pivot 30, a cylindrical section 32, a prism section 33, an external thread section 34, and an end piece 35 are formed sequentially from the inside to the outside (from the shaft body 31 side towards the free end side). A skirt 311 extending radially outward is formed at the axial center position of the shaft body 31.

[0041] After the two scissor arms are matched with the pivot 30, the skirt 311 can be inserted into the two interlocking conical countersunk holes 103, establishing a surface contact matching relationship. See [link to relevant documentation]. Figure 1 As shown.

[0042] The locking part includes an axial locking block 40, a thrust spring 50, an iron ring 60, an end cap 70, and an electromagnet part 80.

[0043] The axial locking block 40 includes a cylindrical portion 41, a radial flange 42 formed at the right end of the cylindrical portion 41 with the outer peripheral surface of the radial flange 42 being formed as a prismatic surface 421, and an external threaded flange 43 formed at the left end of the cylindrical portion 41. The cavity of the cylindrical portion 41 is a prismatic through hole 411, so that after the cylindrical portion 41 is fitted onto the prismatic section 33, it can move linearly back and forth relative to the pivot 30 along the axial direction.

[0044] After the prismatic through hole 411 is matched with the prismatic segment 33, the opposing surfaces (two circumferential surfaces) between them can contact and match, forming a surface matching relationship, which constrains the axial locking block 40 to move axially relative to the prismatic segment 33, and at the same time prevents the axial locking block 40 from rotating relative to the pivot 30 around its axis.

[0045] The axial extension length of the prism segment 33 can be greater than the axial extension length of the cylindrical part 41, so that the axial locking block 40 can have a longer / larger axial travel relative to the prism segment 33.

[0046] An annular axial flange 44 is formed on the end face of the radial flange 42 on the side opposite to the cylindrical body 41. The outer diameter of the light column segment 32 is the same as the inner diameter of the axial flange 44. The outer diameter of the axial flange 44 is smaller than the outer diameter of the shaft body 31. After assembly, the outer end of the light column segment 32 is kept in a state that extends into the axial flange 44.

[0047] The prism-shaped through hole 411 is a hexagonal prism through hole, and correspondingly, the prism segment 33 is a hexagonal prism segment.

[0048] The prism face 421 is an octagonal face, and correspondingly, the prism-shaped countersunk hole 102 is an octagonal countersunk hole / octagonal countersunk hole.

[0049] The thrust spring 50 is fitted onto the cylindrical part 41, so that one end of the thrust spring 50 contacts the inner end face of the radial flange 42.

[0050] The housing of the iron ring 60 is provided with a threaded structure that matches the external threaded flange 43, so as to fix the iron ring 60 at the end of the cylindrical part 41. The outer diameter of the iron ring 60 is larger than the outer diameter of the cylindrical part 41, but not larger than the inner diameter of the countersunk hole 72 (mentioned below).

[0051] An inner bottom boss 71 is formed on the inner bottom surface of the end cap 70, a countersunk hole 72 is formed on the inner bottom boss 71, and two-stage threaded countersunk holes, namely threaded countersunk hole one 73 and threaded countersunk hole two 74, are formed on the inner bottom surface of the countersunk hole 72.

[0052] The electromagnet part 80 (the housing) matches a threaded countersunk hole (i.e., the first threaded countersunk hole 73) on the end cap 70, which is relatively close to the inner bottom surface of the countersunk hole 72, thereby fixing the electromagnet part 80 relatively inside the end cap 70. Another threaded countersunk hole on the end cap 70 (i.e., the second threaded countersunk hole 74) matches an external threaded section 34 on the pivot 30, thereby fixing the end cap 70 to the end of the pivot 30. Adjusting the thread matching length between the end cap 70 and the external threaded section 34 can adjust the position of the end cap 70 relative to the end of the pivot 30, so that the end face of the end cap 70 is close to and can contact the surface on the left or right outer wall of the scissor arm that is outside the prism-shaped countersunk hole 102, and at the same time, it can also adjust the degree of initial compression of the thrust spring 50 by the end cap 70.

[0053] An elastic portion, specifically two elastic sealing rings, is fixedly provided on the port face of the end cap 70. After the end cap 70 is fixed to the end of the pivot 30, the elastic portion can contact the surface on the scissor arm located around the prism-shaped countersunk hole 102, thereby sealing the shaft end of the pivot 30, the thrust spring 50, the iron ring 60, the electromagnet part 80, etc., inside the end cap.

[0054] The end face of the inner bottom boss 71 of the end cap 70 can contact the other end of the thrust spring 50 and apply axial pushing force to the thrust spring 50, so that the thrust spring 50 can always apply elastic pushing force to the axial locking block 40, and push the axial locking block 40 to move axially (of the pivot 30) to push the radial flange 42 into the prismatic countersunk hole 102, so that the prismatic surface 421 of the radial flange 42 can establish a surface contact matching relationship with the prismatic countersunk hole 102.

[0055] The inner diameter of the countersunk hole 72 is larger than the outer diameter of the iron ring 60.

[0056] The end cap 35 extends to the outside through the through hole 75 formed on the end cap 70, and a pin hole is provided on the end cap 35, and a pin is provided in the pin hole, so that the end cap 35 is locked to the end of the pivot 30, which can better resist the adverse effects of vibration on the end connection stability between the end cap 70 and the pivot 30.

[0057] When the electromagnet part 80 is energized, the magnetic attraction generated causes the iron ring 60, along with the axial locking block 40, to move relative to the pivot 30 toward the side away from the scissor arms. This causes the radial flange 42 to move out of the prismatic countersunk hole 102 and remain in this state. During this period, the thrust spring 50 is further compressed, and the two scissor arms can rotate relative to each other, enabling the support platform on the elevator to rise and fall normally, thus ensuring the normal operation of the elevator.

[0058] When the electromagnet part 80 is de-energized, the magnetic attraction disappears, and the thrust spring 50 can push the radial flange 42, causing the axial locking block 40 to move relative to the pivot 30 toward the side closer to the scissor arm, so that the radial flange 42 presses against the port of the prismatic countersunk hole 102. If the axial projection of the circumferential contour of the prismatic countersunk hole 102 coincides with the axial projection of the circumferential contour of the prismatic surface 421, the thrust spring 50 can push the radial flange 42 directly into the prismatic countersunk hole 102, preventing the two scissor arms from rotating relative to each other, thus locking the two scissor arms and preventing the two monitoring units from performing scissor movements. If the axial projection of the circumferential contour of the prismatic countersunk hole 102 does not coincide with the axial projection of the circumferential contour of the prismatic surface 421, but has a certain angle, the two scissor arms will quickly switch to the position where the axial projections coincide after a small relative rotation. The thrust spring 50 can then promptly push the radial flange 42 into the prismatic countersunk hole 102, preventing the two scissor arms from rotating relative to each other.

[0059] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit it. Many aspects of this utility model can be improved without departing from the overall concept. Those skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A modular elevator assembly comprising a pair of scissor arms pivotally matched, characterized in that: It also includes a pair of locking parts corresponding to the two ends of the pivot; prism-shaped countersunk holes are formed at the outer ends of the shaft holes of the two scissor arms; prism sections and external thread sections are formed at both ends of the pivot body from the inside to the outside. The locking part includes an axial locking block, a thrust spring, an iron ring, an end cap, and an electromagnet part; The axial locking block includes a cylindrical part and a radial flange formed at one end of the cylindrical part, with the outer peripheral surface of the radial flange being formed as a prism surface; the cylindrical cavity of the cylindrical part is a prism-shaped through hole, so that the cylindrical part is fitted onto the prism section and can move axially relative to the pivot. The thrust spring is fitted onto the cylindrical body, with one end contacting the inner end face of the radial flange; the iron ring fixes the other end of the cylindrical body. An inner bottom boss is formed on the inner bottom surface of the end cap, a countersunk hole is formed on the inner bottom boss, and at least two-stage threaded countersunk holes are formed on the inner bottom surface of the countersunk hole; the electromagnet part is matched with a threaded countersunk hole relatively close to the inner bottom surface of the countersunk hole, and the threaded countersunk hole on the side opposite to the countersunk hole is matched with the external thread section, so that the end cap can be fixed at the pivot end; the end face of the inner bottom boss contacts the other end of the thrust spring and can make the thrust spring apply axial thrust on the axial locking block, so that the radial flange can be inserted into the prismatic countersunk hole; the inner diameter of the countersunk hole is not less than the outer diameter of the iron ring and the outer diameter of the cylindrical part; When the electromagnet is energized, the magnetic force generated by it can move the axial locking block away from the scissor arm, driving the radial flange out of the prismatic countersunk hole; when the electromagnet is de-energized, the thrust spring can push the axial locking block towards the side closer to the scissor arm, causing the radial flange to press against the port of the prismatic countersunk hole.

2. The modular assembly for an elevator according to claim 1, characterized in that: A tapered countersunk hole is formed on the opposite end face of the two scissor arms and at the port of the shaft hole; a skirt is formed at the axial center position of the shaft body; after the two scissor arms are matched with the shaft body, the skirt can establish a surface contact matching relationship with the two interlocking tapered countersunk holes.

3. A modular elevator assembly according to claim 1 or 2, characterized in that: An annular axial flange is formed on the radial flange at the end face opposite to the cylindrical part; a light column segment is formed between the shaft body and the prism segment; the outer diameter of the light column segment is the same as the inner diameter of the axial flange; the outer diameter of the axial flange is not greater than the outer diameter of the shaft body; the outer end of the light column segment can be kept in a state of extending into the axial flange.

4. The modular component of the elevator according to claim 3, characterized in that: An axially extending end is formed on the free end face of the external thread section; a through hole is formed on the end cap for the end to pass through; a pin hole is provided on the end, and a pin is provided in the pin hole to lock the end cap at the end of the pivot.

5. A modular elevator assembly according to claim 1 or 2, characterized in that: An axially extending end is formed on the free end face of the external thread section; a through hole is formed on the end cap for the end to pass through; a pin hole is provided on the end, and a pin is provided in the pin hole to lock the end cap at the end of the pivot.

6. A modular elevator assembly according to claim 1 or 2, characterized in that: An elastic portion is fixedly provided on the port face of the end cap; after the end cap is fixed to the end of the pivot, the elastic portion can contact the surface on the scissor arm located around the prism-shaped countersunk hole.

7. A modular elevator assembly according to claim 6, characterized in that: The elastic part is one or more elastic sealing rings.

8. A modular elevator assembly according to claim 1 or 2, characterized in that: The prism-shaped through hole is a hexagonal prism through hole, and correspondingly, the prism segment is a hexagonal prism segment.

9. A modular elevator assembly according to claim 8, characterized in that: The prism face is an octagonal face, and correspondingly, the prism-shaped countersunk hole is an octagonal countersunk hole.

10. A modular elevator assembly according to claim 1 or 2, characterized in that: The prism face has N facets, and correspondingly, the prism-shaped countersunk hole is an N-facet countersunk hole, where N is an integer and not less than eight.

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