Lead screw lifting platform

Abstract

The invention provides a lead screw lifting table, and belongs to the technical field of lead screw lifting tables. A lead screw lifting platform comprises a base, a shear fork mechanism, an adjusting mechanism and a top frame, first guide rails are symmetrically installed on the inner walls of the two sides of the base, and second guide rails are symmetrically arranged on the inner walls of the two sides of the top frame; the adjusting mechanism comprises an adjusting frame, an adjusting rod and a driving motor, the shear fork mechanism comprises two connecting shafts which are symmetrically arranged and fixed to the front side and the rear side of the adjusting frame, a first shear fork frame and a second shear fork frame, and the bottom end of the first shear fork frame is hinged to the inner side wall of the base through two first connecting pieces; the top end of the first shear fork frame is arranged on the second guide rail in a sliding mode through two second connecting pieces. The lifting device has the advantage of automatic constant-speed lifting.

Description

Technical Field

[0001] This invention belongs to the technical field of screw lifting platforms, specifically a screw lifting platform. Background Technology

[0002] Screw-driven lifting platforms are widely used in various industries such as machinery, metallurgy, construction, chemical industry, medical, and cultural and health care. They can accurately control and adjust the lifting or advancing height according to a specific program. They can be directly driven by an electric motor or other power source, or manually. However, existing screw jacks struggle to achieve a uniform lifting speed, easily causing jamming and jerking. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a screw lifting platform that has the advantage of automatic and uniform lifting.

[0004] The objective of this invention can be achieved through the following technical solution: a screw lifting platform, comprising a base, a scissor mechanism, an adjustment mechanism and a top frame, wherein first guide rails are symmetrically installed on the inner walls of both sides of the base, and second guide rails are symmetrically arranged on the inner walls of both sides of the top frame; The adjustment mechanism includes an adjustment frame, an adjustment rod, and a drive motor. The scissor lift mechanism includes two symmetrically arranged connecting shafts fixed on the front and rear sides of the adjustment frame, a first scissor lift, and a second scissor lift. The bottom end of the first scissor lift is hinged to the inner wall of the base through two first connecting pieces, and the top end of the first scissor lift is slidably mounted on a second guide rail through two second connecting pieces. The top end of the second scissor lift is hinged to the inner wall of the top frame through two third connecting pieces, and the bottom end of the second scissor lift is slidably mounted on a first guide rail through two fourth connecting pieces. The adjustment frame is located inside the frame of the first and second scissor lifts. The first and second scissor lifts are connected by two connecting shafts, and the inner end of each connecting shaft is fixed to the adjustment frame. A drive motor is installed on the left side of the adjustment frame, and an adjustment rod is fixed on the right side of the adjustment frame. A lead screw is transmitted through the output shaft of the drive motor, and the lead screw passes through the adjustment frame and the adjustment rod in sequence. The two ends of the adjustment rod abut against the first and second scissor lifts.

[0005] Preferably, the first connecting member is a first hinge seat, and each first hinge seat is hinged to both sides of the bottom end of the first scissor lift. The second connecting member is a second hinge seat, and the second hinge seat is fixed to the bottom of the top frame. The second hinge seat is slidably disposed on the first guide rail, and both sides of the top end of the first scissor lift are connected to the second hinge seat.

[0006] Preferably, the third connector is a third hinge seat, and each third hinge seat is hinged to both sides of the top end of the second scissor lift. The fourth connector is a fourth hinge seat, which is fixed on the base. The fourth hinge seat slides and slides with the first guide rail. Both sides of the bottom end of the second scissor lift are connected to the fourth hinge seat.

[0007] Preferably, the adjustment mechanism further includes two telescopic components symmetrically arranged on both sides of the drive motor. Each telescopic component includes a telescopic rod that passes through the adjustment frame and the adjustment rod in sequence, and moves synchronously with the lead screw. The direction of movement of the telescopic rod is parallel to that of the lead screw.

[0008] Preferably, the moving directions of the first guide rail and the second guide rail are parallel.

[0009] Preferably, both ends of the base are provided with baffles to block the bottom ends of the first scissor lift and the second scissor lift.

[0010] Preferably, the top frame is also symmetrically provided with pull rings.

[0011] Compared with the prior art, the advantages of the present invention are: by adjusting the cooperation between the adjustment mechanism and the scissor mechanism, it is beneficial to automatically drive the angle between the first scissor frame and the second scissor frame to increase or decrease, so as to carry out the lifting and lowering of the device body, which is conducive to convenient automatic uniform lifting and lowering, and is more practical. Attached Figure Description

[0012] Figure 1 This is a structural diagram of the present invention.

[0013] Figure 2 This is a front view of the present invention.

[0014] Figure 3 This is a top view of the present invention.

[0015] Figure 4 This is a cross-sectional view of end AA in this invention.

[0016] In the diagram, 2 is the base; 21 is the first guide rail; 3 is the top frame; 31 is the second guide rail; 41 is the adjusting frame; 42 is the adjusting rod; 43 is the drive motor; 51 is the connecting shaft; 52 is the first scissor lift; 53 is the second scissor lift; 62 is the lead screw; 71 is the first hinge seat; 72 is the second hinge seat; 73 is the third hinge seat; 74 is the fourth hinge seat; 81 is the telescopic rod; 82 is the stop bar; and 83 is the pull ring. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0018] like Figures 1 to 4 As shown, a screw lifting platform includes a base 2, a scissor mechanism, an adjustment mechanism, and a top frame 3. First guide rails 21 are symmetrically installed on the inner walls of both sides of the base 2, and second guide rails 31 are symmetrically arranged on the inner walls of both sides of the top frame 3. The adjustment mechanism includes an adjustment frame 41, an adjustment rod 42, and a drive motor 43. The scissor lift mechanism includes two symmetrically arranged connecting shafts 51 fixed on the front and rear sides of the adjustment frame 41, a first scissor lift 52, and a second scissor lift 53. The bottom end of the first scissor lift 52 is hinged to the inner wall of the base 2 through two first connecting pieces, and the top end of the first scissor lift 52 is slidably mounted on the second guide rail 31 through two second connecting pieces. The top end of the second scissor lift 53 is hinged to the inner wall of the top frame 3 through two third connecting pieces, and the bottom end of the second scissor lift 53 is slidably mounted on the first guide rail through two fourth connecting pieces. 21; The adjusting frame 41 is located inside the frame of the first scissor lift 52 and the second scissor lift 53. The first scissor lift 52 and the second scissor lift 53 are connected by two connecting shafts 51, and the inner end of each connecting shaft 51 is fixed to the adjusting frame 41. A drive motor 43 is installed on the left side of the adjusting frame 41, and an adjusting rod 42 is fixed on the right side of the adjusting frame 41. A lead screw 62 is driven and connected to the output shaft of the drive motor 43. The lead screw 62 passes through the adjusting frame 41 and the adjusting rod 42 in sequence. The two ends of the adjusting rod 42 abut against the first scissor lift 52 and the second scissor lift 53.

[0019] Using the above structure, through the cooperation between the adjustment mechanism and the scissor lift mechanism, when lifting is required, the drive motor 43 drives the lead screw 62 to rotate clockwise. Since the lead screw 62 is installed through the adjustment frame 41 and the adjustment rod 42, the adjustment frame 41 and the adjustment rod 42 located on the lead screw 62 move to the right. At the same time, the first scissor lift 52 and the second scissor lift 53 are cross-connected by the connecting shaft 51. During lifting, because the lead screw 62 drives the adjustment rod 42 to move to the right, the included angle between the first scissor lift 52 and the second scissor lift 53 becomes smaller. The first scissor lift 52 slides from the right side of the second guide rail 31 to the left, and the second scissor lift 53... The fork 53 slides from the right side of the first guide rail 21 to the left, causing the angle between the first scissor lift 52 and the second scissor lift 53 to decrease, thereby raising the height of the top frame 3. If it is necessary to lower the top frame 3, the drive motor 43 drives the lead screw 62 to rotate counterclockwise, causing the adjusting frame 41 and the adjusting rod 42 to move to the left, thereby achieving the lowering effect caused by the angle between the first scissor lift 52 and the second scissor lift 53 increasing. This structure is conducive to the lifting and lowering of the device body by automatically driving the angle between the first scissor lift 52 and the second scissor lift 53, which is convenient for automatic and uniform lifting and lowering, and is more practical.

[0020] Specifically, such as Figures 1 to 4 As shown, the first connecting member is a first hinge seat 71, and each first hinge seat 71 is hinged to both sides of the bottom end of the first scissor lift 52. The second connecting member is a second hinge seat 72, and the second hinge seat 72 is fixed to the bottom of the top frame 3. The second hinge seat 72 is slidably disposed on the first guide rail 21, and both sides of the top end of the first scissor lift 52 are connected to the second hinge seat 72.

[0021] like Figures 1 to 4 As shown, the third connector is the third hinge seat 73, and each third hinge seat 73 is hinged to both sides of the top end of the second scissor lift 53. The fourth connector is the fourth hinge seat 74, which is fixed on the base 2. The fourth hinge seat 74 slides and slides with the first guide rail 21. Both sides of the bottom end of the second scissor lift 53 are connected to the fourth hinge seat 74.

[0022] The first hinge seat 71, the second hinge seat 72, the third hinge seat 73, and the fourth hinge seat 74 facilitate the rotation of the first scissor lift 52 and the second scissor lift 53 along the connecting shaft 51. At the same time, the first guide rail 21 and the second guide rail 31 facilitate the smooth movement and rotation of the first scissor lift 52 and the second scissor lift 53, further promoting the uniform lifting and lowering of the mass, and automatically performing uniform lifting and lowering.

[0023] like Figures 1 to 4As shown, the adjustment mechanism also includes two telescopic components symmetrically arranged on both sides of the drive motor 43. The telescopic components include telescopic rods 81, which pass through the adjustment frame 41 and the adjustment rod 42 in sequence and move synchronously with the lead screw 62. The direction of movement of the telescopic rods 81 is parallel to that of the lead screw 62.

[0024] By setting up a telescopic rod 81, which works in conjunction with the drive motor 43 to move the adjusting frame 41 and the adjusting rod 42 along the lead screw 62 to the left or right of the lead screw 62, it is beneficial to raise and lower the device more efficiently.

[0025] like Figures 1 to 4 As shown, the first guide rail 21 and the second guide rail 31 move in parallel directions. This facilitates the smooth movement and rotation of the first scissor lift 52 and the second scissor lift 53, further driving the mass to rise and fall at a uniform speed, and automatically performing uniform lifting and lowering.

[0026] like Figures 1 to 4 As shown, both ends of the base 2 are provided with stop bars 82 to block the bottom ends of the first scissor lift 52 and the second scissor lift 53. By setting the stop bars, it is beneficial to limit the bottom ends of the first scissor lift 52 and the second scissor lift 53, thus limiting the minimum height of the device.

[0027] like Figures 1 to 4 As shown, the top frame 3 is also symmetrically provided with pull ring parts 83. By providing pull ring parts 83, objects that need to be moved and lifted can be fixed to the pull ring parts 83 using straps or connectors, ensuring a secure connection.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0029] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Meanwhile, the word "and / or" throughout the text means including three solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0030] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0031] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A screw-driven lifting platform, characterized in that, It includes a base (2), a scissor mechanism, an adjustment mechanism and a top frame (3). The base (2) has first guide rails (21) symmetrically installed on the inner walls of both sides, and the top frame (3) has second guide rails (31) symmetrically installed on the inner walls of both sides. The adjustment mechanism includes an adjustment frame (41), an adjustment rod (42), and a drive motor (43). The scissor lift mechanism includes two symmetrically arranged connecting shafts (51) fixed on the front and rear sides of the adjustment frame (41), a first scissor lift (52), and a second scissor lift (53). The bottom end of the first scissor lift (52) is hinged to the inner wall of the base (2) through two first connecting pieces, and the top end of the first scissor lift (52) is slidably mounted on the second guide rail (31) through two second connecting pieces. The top end of the second scissor lift (53) is hinged to the inner wall of the top frame (3) through two third connecting pieces, and the bottom end of the second scissor lift (53) is slidably mounted on the first guide rail (21) through two fourth connecting pieces. The frame (41) is located inside the frame of the first scissor lift (52) and the second scissor lift (53). The first scissor lift (52) and the second scissor lift (53) are connected by two connecting shafts (51), and the inner end of each connecting shaft (51) is fixed to the adjusting frame (41). A drive motor (43) is installed on the left side of the adjusting frame (41), and an adjusting rod (42) is fixed on the right side of the adjusting frame (41). A lead screw (62) is connected to the output shaft of the drive motor (43). The lead screw (62) passes through the adjusting frame (41) and the adjusting rod (42) in sequence. The two ends of the adjusting rod (42) abut against the first scissor lift (52) and the second scissor lift (53).

2. The screw jack lifting platform according to claim 1, characterized in that, The first connecting member is the first hinge seat (71), and each first hinge seat (71) is hinged to both sides of the bottom end of the first scissor lift (52). The second connecting member is the second hinge seat (72), and the second hinge seat (72) is fixed to the bottom of the top frame (3). The second hinge seat (72) is slidably set on the first guide rail (21), and both sides of the top end of the first scissor lift (52) are connected to the second hinge seat (72).

3. The screw jack lifting platform according to claim 1, characterized in that, The third connector is the third hinge seat (73), and each third hinge seat (73) is hinged to both sides of the top of the second scissor lift (53). The fourth connector is the fourth hinge seat (74), which is fixed on the base (2). The fourth hinge seat (74) slides and slides with the first guide rail (21). Both sides of the bottom of the second scissor lift (53) are connected to the fourth hinge seat (74).

4. The screw jack lifting platform according to claim 1, characterized in that, The adjustment mechanism also includes two telescopic components symmetrically arranged on both sides of the drive motor (43). The telescopic components include a telescopic rod (81), which passes through the adjustment frame (41) and the adjustment rod (42) in sequence and moves synchronously with the lead screw (62). The direction of movement of the telescopic rod (81) is parallel to that of the lead screw (62).

5. A screw-driven lifting platform according to claim 1, characterized in that, The first guide rail (21) moves in a direction parallel to that of the second guide rail (31).

6. A screw-driven lifting platform according to claim 1, characterized in that, Both ends of the base (2) are provided with stop bars (82) for blocking the bottom ends of the first scissor lift (52) and the second scissor lift (53).

7. A screw-driven lifting platform according to claim 1, characterized in that, The top frame (3) is also symmetrically provided with pull rings (83).

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