CN115650108A

CN115650108A - Tray low-level screw rod lifter

Info

Publication number: CN115650108A
Application number: CN202211333884.3A
Authority: CN
Inventors: 余越; 何家豪
Original assignee: Zhejiang Deneng Logistics Equipment Technology Co ltd
Current assignee: Zhejiang Deneng Logistics Equipment Technology Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-01-31

Abstract

The invention relates to a tray low-position lead screw lifter, which comprises a tray lifting frame, two side brackets, a guide mechanism, a lead screw lifting mechanism and a lifting positioning mechanism, wherein the lifting positioning mechanism comprises positioning crosspieces which are vertically distributed on the side brackets at intervals, a guide seat fixedly arranged on the tray lifting frame, a positioning rod movably arranged on the guide seat and a driving element for driving the positioning rod to move to the position above the positioning crosspiece of a corresponding layer, the positioning rod is horizontally arranged, the positioning crosspieces and the driving element are respectively arranged at two ends of the positioning rod, and the driving element is movably connected with the positioning rod. According to the invention, the lifting bracket and the side bracket of the tray are locked by the lifting positioning mechanism, so that the problem that the lifting bracket of the tray shakes up and down due to sudden change of weight when the tray enters and leaves the lifter is prevented, and the wire rod lifting mechanism is prevented from being damaged; the screw rod lifting mechanism is matched with the guide mechanism, so that the lifting precision and the stability of the lifter are greatly improved.

Description

Tray low-level screw rod lifter

Technical Field

The invention relates to the technical field of logistics equipment, in particular to a tray low-level screw rod lifter.

Background

With the rapid development of logistics transportation and logistics technology, logistics transportation and distribution are widely used. Particularly, large and medium logistics distribution centers are provided with more conveying equipment and increasingly layered lifting equipment, and reciprocating lifting machines, continuous lifting machines and the like are applied to various industries. The scenes relate to the mutual transmission of a large number of goods among conveyors and between the conveyors and the elevator, the butt joint safety transportation between platforms on different horizontal planes and vertical planes is very important, the goods can be safely transported after the equipment is completely butt jointed, the problem that the tray slides down in the lifting operation and start-stop processes of the elevator is very important, the safe operation of the equipment is influenced and major accidents are caused due to poor treatment is solved.

An existing elevator, for example, chinese patent publication No. CN109809094a discloses an omnidirectional vertical elevator for warehouse logistics, which drives a sliding table to move up and down through a transmission screw rod and a nut, but when a tray enters and leaves the elevator, the sliding table may shake up and down due to sudden change of weight, and the shaking may not only cause unstable stacking of the tray, but also easily cause damage to the transmission screw rod and the nut, and reduce the lifting accuracy of the elevator.

Disclosure of Invention

The invention aims to provide a tray low-level screw rod lifter, which solves the problem that a tray lifting frame shakes up and down due to sudden change of weight when a tray enters and leaves the lifter, and improves the stability of the lifter.

The above object of the present invention is achieved by the following technical solutions: the utility model provides a low-order lead screw lift of tray, includes the tray hoisting frame, sets up two collateral branch framves in the tray hoisting frame left and right sides separately, connects guiding mechanism and the lead screw elevating system that the drive tray hoisting frame reciprocated between tray hoisting frame and collateral branch frame, still includes lift positioning mechanism, lift positioning mechanism includes upper and lower interval distribution location crosspiece on the collateral branch frame, fixed guide holder, the activity of setting on the tray hoisting frame sets up locating lever and drive on the guide holder the locating lever removes to the drive element who corresponds layer location crosspiece top, the locating lever is the level and sets up, the both ends at the locating lever are established with drive element branch to the location crosspiece, just drive element and locating lever swing joint.

Preferably, guiding mechanism is including setting up guide rail and the direction channel-section steel on the side support, fixing direction slider and the direction mounting panel on the tray hoisting frame and setting up the leading wheel on the direction mounting panel, direction slider slidable mounting is on guide rail, the leading wheel sets up roll from top to bottom in the direction channel-section steel and along the direction channel-section steel.

Preferably, the left side and the right side of the tray lifting frame are respectively provided with two guide channel steels, and the notches of the two guide channel steels are oppositely arranged.

Preferably, one end of the guide wheel, which is located on the outer side of the guide channel steel, is provided with a limiting flange protruding along the radial direction.

Preferably, the front end of the positioning rod is provided with a supporting plane parallel to the upper end face of the positioning crosspiece, the supporting plane is located below the positioning rod, and a limiting step is formed between the rear end of the supporting plane and the positioning rod.

Preferably, a limit stop is arranged above the positioning crosspiece, and a positioning groove for the positioning rod to extend into is formed between the limit stop and the positioning crosspiece.

Preferably, the middle part of the limit stop is hinged to the positioning crosspiece, the rear end of the limit stop is provided with a jacking portion which is inclined downwards along the extending direction of the positioning rod, the front end of the limit stop is provided with an arc-shaped pressing portion used for pressing against the positioning rod, and a return spring is connected between the rear end of the limit stop and the positioning crosspiece.

Preferably, a movable end is connected between the driving element and the positioning rod, and two ends of the movable end are respectively hinged with the driving element and the positioning rod.

Preferably, the driving element comprises an electric push rod, the axis of the electric push rod is parallel to the axis of the positioning rod and is transversely distributed at intervals, and the movable end is obliquely connected between the electric push rod and the positioning rod.

Preferably, an elastic supporting assembly is connected between the electric push rod and the movable end, the elastic supporting assembly comprises a first telescopic rod and a second telescopic rod which are mutually sleeved and a supporting spring connected between the first telescopic rod and the second telescopic rod, the end part of the first telescopic rod is hinged to the electric push rod, and the end part of the second telescopic rod is hinged to the movable end.

The invention has the beneficial effects that:

1. according to the invention, the lifting bracket and the side bracket of the tray are locked by the lifting positioning mechanism, so that the problem that the lifting bracket of the tray shakes up and down due to sudden change of weight when the tray enters and leaves the lifter is prevented, and the wire rod lifting mechanism is prevented from being damaged;

2. lead screw elevating system cooperates guiding mechanism, has improved the lifting accuracy and the stability of lift greatly.

Drawings

FIG. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of a lift positioning mechanism in embodiment 1 of the present invention;

fig. 3 is a schematic view of a connecting structure of an electric putter and a positioning rod according to embodiment 2 of the present invention;

FIG. 4 is a schematic view showing a bump stopper according to embodiment 3 of the present invention;

in the figure: 1-side support, 2-tray lifting frame, 3-screw rod lifting mechanism, 4-guide mechanism, 401-guide track, 402-guide sliding block, 403-guide channel steel, 404-guide mounting plate, 405-guide wheel, 5-lifting positioning mechanism, 501-positioning crosspiece, 502-guide seat, 503-positioning rod, 5031-supporting plane, 5032-limiting step, 504-electric push rod, 505-movable end, 506-first telescopic rod, 507-second telescopic rod, 508-supporting spring, 509-limiting stop, 510-reset spring, 511-jacking part and 512-arc pressing part.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Example 1:

as shown in fig. 1 and 2, a pallet low lead screw lifter comprises a pallet lifting frame 2, two side brackets 1 respectively arranged at the left and right sides of the pallet lifting frame 2, a guide mechanism 4 connected between the pallet lifting frame 2 and the side brackets 1, and a lead screw lifting mechanism 3 driving the pallet lifting frame 2 to move up and down.

The number of the screw rod lifting mechanisms 3 is two, and the screw rod lifting mechanisms are respectively arranged on the two side brackets 1. The screw rod lifting mechanism 3 consists of a screw rod, a screw rod seat and a motor, the screw rod seat is fixedly connected with the tray lifting frame 2, and the screw rod is rotatably arranged on the side bracket 1.

The guide mechanism 4 comprises a guide rail 401 and a guide channel 403 which are arranged on the side bracket 1, a guide slider 402 and a guide mounting plate 404 which are fixed on the tray lifting frame 2, and a guide wheel 405 which is arranged on the guide mounting plate 404, wherein the guide slider 402 is slidably mounted on the guide rail 401, and the guide wheel 405 is arranged in the guide channel 403 and rolls up and down along the guide channel 403.

Two guide channel steel 403 are respectively arranged on the left side and the right side of the tray lifting frame 2, and the notches of the two guide channel steel 403 are oppositely arranged. One end of the guide wheel 405, which is positioned at the outer side of the guide channel 403, is provided with a radially protruding limiting rib 504.

The tray lifting frame 2 can stably move up and down relative to the side support 1 through the sliding connection of the guide rail 401 and the guide slider 402 and the rolling connection of the guide channel steel 403 and the guide wheel 405, and the shaking of the tray lifting frame 2 in the front, back, left and right directions is reduced.

Be provided with lift positioning mechanism 5 between tray hoisting frame 2 and the side support 1, lift positioning mechanism 5 includes upper and lower interval distribution at the location crosspiece 501 on side support 1, the fixed guide holder 502 that sets up on tray hoisting frame 2, the activity sets up locating lever 503 and the drive positioning lever 503 on guide holder 502 and moves the drive element to corresponding layer location crosspiece 501 top, locating lever 503 is the level setting, location crosspiece 501 is established at the both ends of locating lever 503 with drive element branch, and drive element and locating lever 503 swing joint. The driving element adopts a cylinder or an electric push rod.

The front end of the positioning rod 503 is provided with a support plane 5031 parallel to the upper end surface of the positioning crosspiece 501, the support plane 5031 is located below the positioning rod 503, and a limit step 5032 is formed between the rear end of the support plane 5031 and the positioning rod 503.

A conveyor can be installed on the tray lifting frame 2 for conveying the trays. After the tray enters the tray lifting frame 2, the screw rod lifting mechanism 3 operates to lift the tray lifting frame 2 to a specified height (the lifted height is lower and is used for transferring the tray between conveying devices with different heights), and then the driving element operates to move the positioning rod 503 to the position above the positioning crosspiece 501, so that the tray lifting frame 2 is prevented from sinking to cause screw rod damage when the tray enters the tray lifting frame 2.

Example 2:

as shown in fig. 3, the difference from embodiment 1 is that a limit stopper 509 is provided above the detent ledge 501, and a detent groove into which the detent rod 503 extends is formed between the limit stopper 509 and the detent ledge 501. The limit stop 509 is mounted on the positioning crosspiece 501 through a support, and the middle part of the limit stop 509 is hinged with the support. The rear end of limit stop 509 is provided with along the locating lever 503 stretch into the direction and is the jacking portion 511 of downward sloping, and the front end of limit stop 509 is provided with and is used for leaning on the arc of pressing on the locating lever 503 and leans on splenium 512, is connected with reset spring 510 between the rear end of limit stop 509 and location crosspiece 501.

After locating lever 503 stretched into the constant head tank, locating lever 503 was restricted the removal from top to bottom by the constant head tank, prevented tray hoisting frame 2 from taking place rocking from top to bottom. When the positioning rod 503 is inserted, the end of the positioning rod 503 pushes the rear end of the limit stopper 509 to swing upwards through the lifting part 511, the arc pressing part 512 at the front end swings downwards until the end is pressed against the positioning rod 503, at this time, the electric push rod stops moving, and at this time, the positioning rod 503 is vertically limited by the limit stopper 509 and the positioning crosspiece 501.

Example 3:

as shown in fig. 4, it is different from embodiments 1 and 2 in that,

a movable end 505 is connected between the driving element and the positioning rod 503, and two ends of the movable end 505 are respectively hinged with the driving element and the positioning rod 503.

The driving element comprises an electric push rod 504, the axis of the electric push rod 504 is parallel to the axis of the positioning rod 503 and is transversely distributed at intervals, and the movable end 505 is obliquely connected between the electric push rod 504 and the positioning rod 503.

An elastic supporting component is connected between the electric push rod 504 and the movable end 505, the elastic supporting component comprises a first telescopic rod 506 and a second telescopic rod 507 which are mutually sleeved and a supporting spring 508 connected between the first telescopic rod 506 and the second telescopic rod 507, the end part of the first telescopic rod 506 is hinged on the electric push rod 504, and the end part of the second telescopic rod 507 is hinged on the movable end 505. Wherein, a sleeve hole is arranged in the second expansion link 507, the first expansion link 506 is inserted in the sleeve hole, and the support spring 508 is positioned in the sleeve hole.

When the positioning rod 503 is impacted axially, the first expansion link 506 and the second expansion link 507 move relatively to absorb the axial impact, so as to reduce the impact on the electric push rod 504 and prolong the service life of the electric push rod 504.

Claims

1. The utility model provides a low-order lead screw lift of tray, includes tray hoisting frame (2), divides to establish two collateral branch framves (1) in tray hoisting frame (2) the left and right sides, connects in guide mechanism (4) between tray hoisting frame (2) and collateral branch frame (1) and lead screw elevating system (3) that drive tray hoisting frame (2) reciprocated, its characterized in that: still include lift positioning mechanism (5), lift positioning mechanism (5) are including upper and lower interval distribution location crosspiece (501), fixed guide holder (502), the activity setting locating lever (503) and the drive on guide holder (502) on tray hoisting frame (2) on collateral branch frame (1) locating lever (503) remove to the drive element who corresponds layer location crosspiece (501) top, locating lever (503) are the level setting, locate crosspiece (501) and drive element and establish respectively at the both ends of locating lever (503), just drive element and locating lever (503) swing joint.

2. The pallet low lead screw elevator according to claim 1, characterized in that: guiding mechanism (4) including setting up guide rail (401) and direction channel-section steel (403) on side support (1), fixing guide slider (402) and direction mounting panel (404) on tray hoisting frame (2) and leading wheel (405) of setting on direction mounting panel (404), guide slider (402) slidable mounting is on guide rail (401), leading wheel (405) set up roll from top to bottom in direction channel-section steel (403) and along direction channel-section steel (403).

3. The pallet low lead screw lifter according to claim 2, characterized in that: the left side and the right side of the tray lifting frame (2) are respectively provided with two guide channel steel (403), and the notches of the two guide channel steel (403) are oppositely arranged.

4. The screw hoist as claimed in claim 3, characterized in that: one end of the guide wheel (405) positioned at the outer side of the guide channel steel (403) is provided with a limiting flange (504) protruding along the radial direction.

5. The pallet low lead screw lifter according to claim 1, characterized in that: the front end of the positioning rod (503) is provided with a supporting plane (5031) parallel to the upper end face of the positioning crosspiece (501), the supporting plane (5031) is positioned below the positioning rod (503), and a limiting step (5032) is formed between the rear end of the supporting plane (5031) and the positioning rod (503).

6. The pallet low lead screw elevator according to claim 5, characterized in that: a limit stop (509) is arranged above the positioning crosspiece (501), and a positioning groove for the positioning rod (503) to extend into is formed between the limit stop (509) and the positioning crosspiece (501).

7. The pallet low lead screw elevator according to claim 6, characterized in that: the middle part of limit stop (509) articulates on location crosspiece (501), the rear end of limit stop (509) is provided with and stretches into direction along locating lever (503) and be jacking portion (511) of downward sloping, the front end of limit stop (509) is provided with and is used for leaning on arc on pressing portion (512) on locating lever (503), be connected with reset spring (510) between the rear end of limit stop (509) and location crosspiece (501).

8. The pallet low lead screw elevator according to claim 1, characterized in that: a movable end head (505) is connected between the driving element and the positioning rod (503), and two ends of the movable end head (505) are respectively hinged with the driving element and the positioning rod (503).

9. The pallet low lead screw elevator according to claim 8, characterized in that: the driving element comprises an electric push rod (504), the axis of the electric push rod (504) is parallel to the axis of the positioning rod (503) and is transversely distributed at intervals, and the movable end (505) is obliquely connected between the electric push rod (504) and the positioning rod (503).

10. The pallet low lead screw elevator of claim 9, wherein: be connected with the elastic support subassembly between electric putter (504) and activity end (505), the elastic support subassembly includes first telescopic link (506) and second telescopic link (507) and the supporting spring (508) of connection at first telescopic link (506) and second telescopic link (507) that cup joint each other, the tip of first telescopic link (506) articulates on electric putter (504), the tip of second telescopic link (507) articulates on activity end (505).