Goods lifting device for housing construction

Abstract

According to the goods lifting device for housing construction, when a worker places lifted goods on a placing plate of the goods lifting device, a connecting block is driven to move downwards, so that a first connecting rod far away from one end of the connecting block moves upwards, and then a connecting plate is driven to move upwards; meanwhile, a fourth connecting rod is driven to rotate, and then a top plate is driven to move upwards, so that a protection plate fixedly connected with the upper end of the top plate moves upwards, and the goods on a placing plate are protected; a spring is fixedly mounted between a connecting block and a base, so that when cargoes on a placing plate are moved away, the connecting block is driven to move upwards through the elastic force of the spring at the lower end of the connecting block, then connecting plates in a jacking mechanism are driven to move reversely, a protective plate moves downwards, and workers can continue to carry the cargoes conveniently; the overall height of the base and the bearing platform can be adjusted through the arranged lifting device, and therefore the height requirement for lifting goods is met.

Description

Technical Field

[0001] The present invention relates to the technical field of goods lifting for building construction, and more specifically, to a goods lifting device for building construction. Background Art

[0002] A goods lifting device is a mechanical equipment used for vertically or obliquely moving goods, aiming to lift goods from a lower position to a higher position or transfer them between different heights. Such devices are widely used in fields such as logistics, warehousing, manufacturing, and construction to improve the efficiency and safety of goods handling.

[0003] Currently, most goods lifting equipment uses electric lifting platforms for transportation. These platforms are usually equipped with fixedly installed guardrails, but the height of the guardrails is fixed, which brings inconvenience to workers when loading goods onto the platform. In addition, the fixed-height guardrails cannot provide comprehensive protection, thus increasing the risk of goods tipping over and falling.

[0004] Therefore, there is an urgent need to improve a goods lifting device for building construction to solve the above-mentioned problems. Summary of the Invention

[0005] In view of this, the present invention provides a goods lifting device for building construction, comprising:

[0006] A lifting device;

[0007] A base, which is arranged on the lifting device and can be lifted and lowered along with the lifting device. A plurality of placement grooves are provided above the base;

[0008] A bearing platform, which includes a placement plate, a guard plate, and a linkage support mechanism. A plurality of the linkage support mechanisms are provided and are correspondingly arranged with the placement grooves. The placement plate is arranged on the linkage support mechanism, and the guard plate is arranged on the linkage support mechanism and surrounds the periphery of the placement plate, and can move up and down along the periphery of the placement plate under the linkage action of the linkage support mechanism.

[0009] Further, the linkage support mechanism includes a support plate, a connection block, a top plate, a first link, a second link, and a fourth link; the support plate is disposed in the placement groove, and both opposite sides of the support plate are rotatably connected to a connection plate through the second link. Both opposite sides of the connection plate are rotatably connected to the top plate through the fourth link. Both of the fourth links are connected to the connection block through the first link. The cross-section angle of the fourth link is an obtuse-angled folded shape. The two ends of the longer side are pivotally connected to the connection plate and the top plate, and the two ends of the shorter side are pivotally connected to the connection plate. Both ends of the two first links are rotatably connected to the connection plate and the connection block, and the middle of the first link is rotatably connected to the upper half of the support plate through a first rotating shaft provided thereon. The upper surface of the connection block is fixedly connected to the placement plate, and the upper end of the top plate is fixedly connected to the protection plate; when the placement plate bears goods, the gravity of the goods causes it to slide downward, thereby driving the connection block to move downward, so that the first link at the end far from the connection block moves upward, thereby driving the connection plate to move upward. At the same time, the fourth link rotates to drive the top plate to move upward, thereby driving the protection plate fixedly connected to the top plate to move upward, so as to protect the goods on the placement plate.

[0010] Further, third rotating shafts are fixedly connected to both opposite sides of the support plate, and third links are rotatably disposed on the third rotating shafts. One end of the third link far from the third rotating shaft is rotatably connected to a second rotating shaft. The number of the second rotating shafts is two, and they are both fixedly disposed on both opposite sides of the connection plate. When the connection block moves downward due to the placement plate, the connection plate is driven to move upward through the first link. At the same time, when the connection plate moves upward, the third link is driven to rotate. Further, through the action of the third rotating shaft and the support plate, the upward movement of the connection plate is further ensured.

[0011] Further, two fifth linkages are provided between the connecting plate and the third linkage. Both of the two fifth linkages are rotationally connected to the connecting plate through a second rotating shaft. One end of the fifth linkage away from the second rotating shaft is rotationally connected to a sixth rotating shaft fixedly arranged on opposite sides of the top plate. The second linkage is rotationally connected to the third rotating shaft. One end of the second linkage away from the third rotating shaft is rotationally connected to the fourth linkage through the fourth rotating shaft. The third linkage is located between the second linkage and the support plate. When one end of the first linkage away from the connecting block rises, it drives the connecting plate to move upward. Since the length of the second linkage is a fixed length and one end is rotationally connected to the fourth linkage, when the connecting plate moves upward, the second linkage drives the fourth linkage to rotate, thereby driving the top plate to rise. At the same time, both ends of the fifth linkage are rotationally connected to the connecting plate and the top plate respectively, thereby driving the guard plate to move up and down.

[0012] Further, seventh rotating shafts are fixedly arranged on opposite sides of the upper half of the connecting plate. The fourth linkage is rotationally connected to the connecting plate through the seventh rotating shaft. The fourth linkage is located between the first linkage and the connecting plate. One end of the fourth linkage is rotationally connected to the upper half of the top plate through the fifth rotating shaft. Vertical grooves corresponding to the upward extension of the first linkage are formed in the placement plate. A plurality of the guard plates are all located outside the four sides of the placement plate. When the connecting plate moves upward, the fourth linkage rotates, thereby driving the top plate to be lifted, so that the guard plate rises.

[0013] Further, a spring is fixedly installed between the connecting block and the base. When the goods on the placement plate are moved away, the elastic force of the spring at the lower end of the connecting block drives the connecting block to move upward, thereby driving all the linkages in the linkage support mechanism to move in the reverse direction, so that the guard plate moves downward. When the connecting block moves downward, the spring is in a compressed state, which is convenient for the placement plate and all the linkages in the linkage support mechanism to move, and is also convenient for the first linkage to move in the vertical groove.

[0014] Further, the lifting device includes a chassis, a lifting assembly and a top plate; the bottom of the lifting assembly is arranged in the chassis, and the upper part is connected to the top plate. The base is fixedly arranged on the top plate. When the lifting assembly lifts, it drives the top plate to lift, further driving the base and the carrying platform to lift, so as to meet the requirement of the lifting height of the goods.

[0015] Furthermore, a retaining wall is provided around the periphery of the chassis. The lifting assembly includes a first support member and a second support member. The first ends of the first support member and the second support member are rotatably connected to the bottom of the top plate. A first chute is provided on the first support member. The second support member is inserted into the first chute and can slide along the chute. The second ends of the first support member and the second support member are slidably disposed on the chassis. When the second ends of the first support member and the second support member slide closer to each other, their second ends approach each other, thereby increasing the height of the entire lifting assembly and further increasing the height of the top plate. First hydraulic rods and second hydraulic rods are correspondingly provided at the second ends of the first support member and the second support member. One end of the first hydraulic rod is connected to the retaining wall, and the other end is connected to the first support member. One end of the second hydraulic rod is connected to the retaining wall, and the other end is connected to the second support member. When the first hydraulic rod and the second hydraulic rod extend simultaneously, they push the second ends of the two support members closer to each other, thereby increasing the overall height of the lifting assembly. When the first hydraulic rod and the second hydraulic rod contract simultaneously, the second ends of the two support members move away from each other, thereby reducing the overall height of the lifting assembly.

[0016] Furthermore, pulleys are provided at the bottoms of the second ends of the first support member and the second support member, facilitating their sliding within the chassis.

[0017] Furthermore, end rods are provided on one side of the pulleys facing the retaining wall of the chassis. Corresponding to the end rods, second chutes are provided on the retaining wall. The end rods are slidably connected within the second chutes, which can ensure the smoothness of the sliding of the first support member and the second support member, thereby improving the smoothness of the lifting of the lifting device.

[0018] A goods lifting device for building construction provided by the present invention has the following advantages: When a worker places the lifted goods on the placement plate of the goods lifting device, it drives the connecting block to move downward, thereby causing the first connecting rod at the end far from the connecting block to move upward, and then driving the connecting plate to move upward, while driving the fourth connecting rod to rotate, and then driving the top plate to move upward, so that the guard plate fixedly connected to the upper end of the top plate moves upward, thereby protecting the goods on the placement plate; By fixedly installing a spring between the connecting block and the base, when the goods on the placement plate are removed, the elastic force of the spring at the lower end of the connecting block drives the connecting block to move upward, and then drives the connecting plates in the jacking mechanism to move in the reverse direction, so that the guard plate moves downward, facilitating the worker to carry goods onto the placement plate next time; By providing a lifting device, the overall height of the base and the carrying platform can be adjusted to meet the height requirements for lifting goods. Description of the Drawings

[0019] Upon reading the detailed description of the preferred embodiments below, various other advantages and benefits will become apparent to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered as a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0020] Figure 1 Schematic perspective view of the goods lifting device provided by an embodiment of the present invention;

[0021] Figure 2 Schematic exploded view of the base and the placement plate of the goods lifting device provided by an embodiment of the present invention;

[0022] Figure 3 Schematic connection view of the lifting mechanism and the placement plate of the goods lifting device provided by an embodiment of the present invention;

[0023] Figure 4 Schematic overall view of the lifting mechanism of the goods lifting device provided by an embodiment of the present invention;

[0024] In the figure, 1, lifting device, 2, base, 3, carrying platform;

[0025] 101, chassis, 102, top plate, 103, enclosure, 104, first support member, 105, second support member, 106, first hydraulic rod, 107, second hydraulic rod, 108, pulley, 109, first chute, 201, placement groove, 301, guard plate, 302, placement plate, 303, connecting block, 304, support plate, 305, connecting plate, 306, top plate, 307, first connecting rod, 308, second connecting rod, 309, third connecting rod, 310, fourth connecting rod, 311, fifth connecting rod, 312, first rotating shaft, 313, second rotating shaft, 314, third rotating shaft, 315, fourth rotating shaft, 316, fifth rotating shaft, 317, sixth rotating shaft, 318, seventh rotating shaft, 319, vertical groove. Detailed implementation manners

[0026] The following will describe the exemplary embodiments of the present disclosure in more detail with reference to the drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] An embodiment of the present invention discloses a goods lifting device for building construction. Refer to Figures 1-4As shown in the figure, it includes a jacking device 1 and a base 2 fixedly arranged at its upper end. The base 2 is arranged on the lifting device 1 and can be lifted and lowered with the lifting device 1. Above the base 2, there are a plurality of placement grooves 201. Above the base 2, there is a bearing platform. The bearing platform includes a placement plate 302, a guard plate 301 and a linkage support mechanism. A plurality of the linkage support mechanisms are provided and are arranged corresponding to the placement grooves 201. The placement plate 302 is arranged on the linkage support mechanism. The guard plate 301 is arranged on the linkage support mechanism and is arranged around the periphery of the placement plate 302 and can move up and down along the periphery of the placement plate 302 under the linkage action of the linkage support mechanism.

[0028] Referring to Figures 2-4 As shown in the figure, the linkage support mechanism includes a plurality of support plates 304 fixedly arranged inside the base 2. On both opposite sides of the support plate 304, there is a connecting plate 305 rotatably connected through a second connecting rod 308. On both opposite sides of the connecting plate 305, there is a top plate 306 rotatably connected through a fourth connecting rod 310. Both of the two fourth connecting rods 310 are connected with a connecting block 303 through a first connecting rod 307. Among them, both ends of the two first connecting rods 307 are rotatably connected with the connecting plate 305 and the connecting block 303, and the middle part of the first connecting rod 307 is rotatably connected with the upper half of the support plate 304 through a first rotating shaft 312. The upper surface of the connecting block 303 is fixedly connected with the placement plate 302. The upper end of the top plate 306 is fixedly connected with a guard plate 301 for enclosing goods; by arranging the support plates 304 on the four sides of the placement plate 302 and fixedly connecting the connecting block 303 with the placement plate 302, when a worker places goods on the placement plate 302, the placement plate 302 slides downward under the action of the gravity of the goods, thereby driving the connecting block 303 to move downward, so that the first connecting rod 307 at one end far from the connecting block 303 moves upward, thereby driving the connecting plate 305 to move upward. At the same time, on both opposite sides of the connecting plate 305, there is a top plate 306 rotatably connected through a fourth connecting rod 310. When the connecting plate 305 moves upward, it drives the fourth connecting rod 310 to rotate. At the same time, the cross-sectional angle of the fourth connecting rod 310 is an obtuse angle. The longer side of the fourth connecting rod 310 is located between the seventh rotating shaft 318 and the fifth rotating shaft 316, and the shorter side of the fourth connecting rod 310 is located between the fourth rotating shaft 315 and the seventh rotating shaft 318. Then it drives the top plate 306 to move upward, so that the guard plate 301 fixedly connected to the upper end of the top plate 306 moves upward, thereby protecting the goods on the placement plate 302. And the heavier the goods are, the more downward the placement plate 302 slides, so that the guard plate 301 moves more upward.

[0029] Continue to refer to Figures 3-4As shown, third rotating shafts 314 are fixedly connected to opposite sides of the support plate 304. A third connecting rod 309 is rotatably arranged on the third rotating shafts 314. One end of the third connecting rod 309 away from the third rotating shaft 314 is rotatably connected to a second rotating shaft 313. The number of the second rotating shafts 313 is two, and they are both fixedly arranged on opposite sides of the connecting plate 305. When the connecting block 303 moves downward due to the placement plate 302, the connecting plate 305 is driven to move upward through the first connecting rod 307. At the same time, when the connecting plate 305 moves upward, the third connecting rod 309 is driven to rotate, thereby playing an auxiliary lifting role for the connecting plate 305.

[0030] Continue to refer to Figures 3-4 As shown, further, a fifth connecting rod 311 is arranged between the connecting plate 305 and the third connecting rod 309. Both of the two fifth connecting rods 311 are rotatably connected to the connecting plate 305 through the second rotating shaft 313. One end of the fifth connecting rod 311 away from the second rotating shaft 313 is rotatably connected to a sixth rotating shaft 317 fixedly arranged on opposite sides of the top plate 306. The second connecting rod 308 is rotatably connected to the third rotating shaft 314. One end of the second connecting rod 308 away from the third rotating shaft 314 is rotatably connected to the fourth connecting rod 310 through a fourth rotating shaft 315. Among them, the third connecting rod 309 is located between the second connecting rod 308 and the support plate 304. When one end of the first connecting rod 307 away from the connecting block 305 rises, the connecting plate 305 is driven to move upward. And because the length of the second connecting rod 308 is a fixed length and one end is rotatably connected to the fourth connecting rod 310, when the connecting plate 305 moves upward, the second connecting rod 308 drives the fourth connecting rod 310 to rotate, thereby driving the top plate 306 to rise. At the same time, both ends of the fifth connecting rod 311 are respectively rotatably connected to the connecting plate 305 and the top plate 306, so the fifth connecting rod 311 plays an auxiliary lifting role for the top plate 306.

[0031] Refer to Figures 1-4As shown, further, seventh rotating shafts 318 are fixedly arranged on opposite sides of the upper half of the connecting plate 305. The fourth connecting rod 310 is rotatably connected to the connecting plate 305 through the seventh rotating shafts 318. Among them, the fourth connecting rod 310 is located between the first connecting rod 307 and the connecting plate 305. One end of the fourth connecting rod 310 is rotatably connected to the upper half of the top plate 306 through a fifth rotating shaft 316. Four placement grooves 201 are formed in the base 2. At least four vertical grooves 319 for the first connecting rod 307 to extend upward are formed in the placement plate 302. Among them, a plurality of guard plates 301 are all located outside the four sides of the placement plate 302. When the connecting plate 305 moves upward, the fourth connecting rod 310 rotates, thereby driving the top plate 306 to be lifted, so that the guard plates 301 fixedly connected to the upper end of the top plate 306 are lifted. By fixedly installing a spring between the connecting block 303 and the base 2, when the goods on the placement plate 302 are moved away, the elastic force of the spring at the lower end of the connecting block 303 drives the connecting block 303 to move upward, thereby driving the connecting plates of the linkage support mechanism to move in the reverse direction, so that the guard plates 301 move downward, facilitating the workers to carry goods onto the placement plate 302 next time. Similarly, when the connecting block 303 moves downward, the spring is in a compressed state. By providing the placement grooves 201, it is convenient for the placement plate 302 and the connecting plates in the linkage support mechanism to move. At the same time, vertical grooves 309 are formed in the placement plate 302 to facilitate the movement of the first connecting rod 307.

[0032] Referring to Figure 1 As shown, the lifting device 1 includes a chassis 101, a lifting assembly and a top plate 102; the bottom of the lifting assembly is arranged in the chassis 101, and the upper part is connected to the top plate 102. The base 2 is fixedly arranged on the top plate 102. When the lifting assembly lifts, it drives the top plate 102 to lift, and further drives the base 2 and the carrying platform 3 to lift, so as to meet the requirement of the lifting height of the goods.

[0033] Continue to refer to Figure 1As shown, a retaining wall 103 is provided around the periphery of the chassis 101. The lifting assembly includes a first support member 104 and a second support member 105. The first ends of the first support member 104 and the second support member 105 are rotatably connected to the bottom of the top plate 102. A first chute 109 is provided on the first support member 104. The second support member 105 is inserted into the chute 109 and can slide along the first chute 109. The second ends of the first support member 104 and the second support member 105 are slidably provided on the chassis 101. When the second ends of the first support member 104 and the second support member 105 slide closer to each other, their second ends approach each other, thereby increasing the height of the entire lifting assembly and further increasing the height of the top plate 102. First hydraulic rods 106 and second hydraulic rods 107 are correspondingly provided at the second ends of the first support member 104 and the second support member 105. One end of the first hydraulic rod 106 is connected to the retaining wall, and the other end is connected to the first support member 104. One end of the second hydraulic rod 107 is connected to the retaining wall 103, and the other end is connected to the second support member 105. When the first hydraulic rods 106 and the second hydraulic rods 107 extend simultaneously, they push the second ends of the two support members closer to each other, thereby increasing the overall height of the lifting assembly. When the first hydraulic rods 106 and the second hydraulic rods 107 contract simultaneously, the second ends of the two support members move away from each other, thereby reducing the overall height of the lifting assembly.

[0034] Continue to refer to Figure 1 As shown, pulleys 108 are provided at the bottoms of the second ends of the first support member 104 and the second support member 105 to facilitate their sliding within the chassis 101.

[0035] In this embodiment, an end rod is provided on one side of the pulley 108 facing the retaining wall 103 of the chassis 101. Corresponding to the end rod, a second chute is provided on the retaining wall 103. The end rod is slidably connected within the second chute, which can ensure the smoothness of the sliding of the first support member 104 and the second support member 105, thereby improving the smoothness of the lifting of the lifting device 1.

[0036] In this embodiment, the principle of a goods lifting device for building construction is as follows:

[0037] The staff places the goods to be lifted on the placement plate 302, driving the connecting block 303 to move downward, so that the first connecting rod 307 at the end far from the connecting block 303 moves upward, and then drives the connecting plate 305 to move upward. At the same time, it drives the fourth connecting rod 310 to rotate, and then drives the top plate 306 to move upward. Thus, the guard plate 301 fixedly connected to the upper end of the top plate 306 moves upward to protect the goods on the placement plate 302. At the same time, when the connecting plate 305 moves upward, it drives the third connecting rod 309 to rotate, which can assist in lifting the connecting plate 305. And when the connecting plate 305 moves upward, the second connecting rod 308 drives the fourth connecting rod 310 to rotate, which drives the top plate 306 to rise. At the same time, both ends of the fifth connecting rod 311 are rotatably connected to the connecting plate 305 and the top plate 306 respectively. Thus, the fifth connecting rod 311 plays an auxiliary lifting role for the top plate 306, and further enables the guard plate 301 to move stably.

[0038] In summary, the present embodiment provides.

[0039] It should be noted that in the description of the present invention, the terms indicating the direction or positional relationship such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the direction or positional relationship shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0040] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0041] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. In this way, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A goods lifting device for building construction, characterized in that, Comprising: A lifting device; A base, which is provided on the lifting device and can be lifted with the lifting of the lifting device, and a plurality of placement grooves are provided above the base; A carrying platform, which includes a placement plate, a guard plate and a linkage support mechanism. A plurality of the linkage support mechanisms are provided and are correspondingly arranged with the placement grooves. The placement plate is provided on the linkage support mechanism, and the guard plate is provided on the linkage support mechanism and is arranged around the periphery of the placement plate and can move up and down along the periphery of the placement plate under the linkage action of the linkage support mechanism.

2. The goods lifting device for building construction according to claim 1, wherein The linkage support mechanism includes a support plate, a connection block, a top plate, a first connecting rod, a second connecting rod and a fourth connecting rod; the support plate is arranged in the placement groove, and connecting plates are rotatably connected to both opposite sides of the support plate through the second connecting rods. The top plate is rotatably connected to both opposite sides of the connecting plate through the fourth connecting rods. Both of the fourth connecting rods are connected to the connection block through the first connecting rod. The cross-section angle of the fourth connecting rod is an obtuse-angled folded shape. The two ends of the longer side are axially connected to the connecting plate and the top plate, and the two ends of the shorter side are axially connected to the connecting plate. Both ends of the two first connecting rods are rotatably connected to the connecting plate and the connection block, and the middle part of the first connecting rod is rotatably connected to the upper half of the support plate through a first rotating shaft arranged thereon. The upper surface of the connection block is fixedly connected to the placement plate, and the upper end of the top plate is fixedly connected to the guard plate; when the placement plate bears goods, the gravity of the goods causes it to slide downward, thereby driving the connection block to move downward, so that the first connecting rod at the end far from the connection block moves upward, and then drives the connecting plate to move upward. At the same time, the top plate is driven to move upward through the rotation of the fourth connecting rod, so as to drive the guard plate fixedly connected to the top plate to move upward, so as to block and protect the goods on the placement plate.

3. The goods lifting device for building construction according to claim 2, characterized in that, Both opposite sides of the support plate are fixedly connected with third rotating shafts, and third connecting rods are rotatably arranged on the third rotating shafts. The third connecting rods are rotatably connected to second rotating shafts at the ends far from the third rotating shafts. The number of the second rotating shafts is two and they are both fixedly arranged on both opposite sides of the connecting plate. When the connection block moves downward due to the placement plate, the connecting plate is driven to move upward through the first connecting rod. At the same time, when the connecting plate moves upward, the third connecting rod is driven to rotate. Further, through the action of the third rotating shaft and the support plate, the upward movement of the connecting plate is further ensured.

4. The goods lifting device for building construction according to claim 3, characterized in that, There are two fifth linkages arranged between the connecting plate and the third linkage. Both of the two fifth linkages are rotatably connected to the connecting plate through a second rotating shaft. One end of the fifth linkage away from the second rotating shaft is rotatably connected to a sixth rotating shaft fixedly arranged on opposite sides of the top plate. The second linkage is rotatably connected to the third rotating shaft. One end of the second linkage away from the third rotating shaft is rotatably connected to the fourth linkage through the fourth rotating shaft. The third linkage is located between the second linkage and the support plate. When one end of the first linkage away from the connecting block rises, it drives the connecting plate to move upward. And because the length of the second linkage is a fixed length and one end is rotatably connected to the fourth linkage, when the connecting plate moves upward, the second linkage drives the fourth linkage to rotate, and further drives the top plate to rise. At the same time, both ends of the fifth linkage are respectively rotatably connected to the connecting plate and the top plate, so as to drive the guard plate to move up and down.

5. The goods lifting device for building construction according to claim 4, wherein On opposite sides of the upper half of the connecting plate, seventh rotating shafts are fixedly arranged. The fourth linkage is rotatably connected to the connecting plate through the seventh rotating shafts. The fourth linkage is located between the first linkage and the connecting plate. One end of the fourth linkage is rotatably connected to the upper half of the top plate through the fifth rotating shaft. Vertical grooves corresponding to the upward extension of the first linkage are formed in the placement plate. A plurality of the guard plates are all outside the four sides of the placement plate. When the connecting plate moves upward, the fourth linkage rotates, and further drives the top plate to be lifted, so that the guard plates rise.

6. The goods lifting device for building construction according to claim 5, characterized in that, A spring is fixedly installed between the connecting block and the base. When the goods on the placement plate are moved away, the elastic force of the spring at the lower end of the connecting block drives the connecting block to move upward, and further drives each of the linkages in the linkage support mechanism to move in the reverse direction, so that the guard plate moves downward. When the connecting block moves downward, the spring is in a compressed state, which is convenient for the placement plate and each of the linkages in the linkage support mechanism to move, and at the same time is convenient for the first linkage to move in the vertical groove.

7. The goods lifting device for building construction according to claim 1, characterized in that, The lifting device includes a chassis, a lifting assembly and a top plate; the bottom of the lifting assembly is arranged in the chassis, and the upper part is connected to the top plate. The base is fixedly arranged on the top plate. When the lifting assembly lifts and lowers, it drives the top plate to lift and lower, and further drives the base and the carrying platform to lift and lower, so as to meet the requirement of the lifting height of the goods.

8. The goods lifting device for building construction according to claim 7, characterized in that, A retaining wall is provided around the periphery of the chassis. The lifting assembly includes a first support member and a second support member. The first ends of the first support member and the second support member are both rotatably connected to the bottom of the top plate. A first sliding groove is provided on the first support member. The second support member is inserted into the first sliding groove and can slide along the first sliding groove. The second ends of the first support member and the second support member are slidably arranged on the chassis. When the second ends of the first support member and the second support member slide closer to each other, their second ends approach each other, thereby increasing the height of the entire lifting assembly and further increasing the height of the top plate. First hydraulic rods and second hydraulic rods are correspondingly provided at the second ends of the first support member and the second support member. One end of the first hydraulic rod is connected to the retaining wall, and the other end is connected to the first support member. One end of the second hydraulic rod is connected to the retaining wall, and the other end is connected to the second support member. When the first hydraulic rod and the second hydraulic rod extend simultaneously, they push the second ends of the two support members closer to each other, thereby increasing the overall height of the lifting assembly. When the first hydraulic rod and the second hydraulic rod contract simultaneously, the second ends of the two support members move away from each other, thereby reducing the overall height of the lifting assembly.

9. The goods lifting device for building construction according to claim 8, characterized in that, Pulleys are provided at the bottoms of the second ends of the first support member and the second support member, facilitating their sliding within the chassis.

10. The goods lifting device for building construction according to claim 9, characterized in that, End rods are provided on one side of the pulleys facing the chassis retaining wall. Corresponding to the end rods, second sliding grooves are provided on the retaining wall. The end rods are slidably connected within the second sliding grooves, which can ensure the smoothness of the sliding of the first support member and the second support member, thereby improving the smoothness of the lifting of the lifting device.

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