A laboratory instrument rack

Abstract

This invention discloses a laboratory instrument rack, relating to the field of laboratory instruments. It includes a rack body with a display shelf fixed to the top and a cabinet connected to the front. The rack features a rotating rod, a first connecting rod, and a second connecting rod that, after positioning, can support a second connecting plate. During support, the first and second connecting plates can rotate to the same horizontal position as the rack body, thereby increasing the rack's placement area and improving the versatility of instrument placement. When the placement plate moves, it slides downwards through a storage cavity, allowing valuable and precision instruments to be moved into the cavity for individual storage and protection. A telescopic plate, when pressing on the instruments, ensures a stable connection between the instruments and the placement plate, improving stability when the instruments are placed on the plate surface and preventing damage from falling due to external impact.

Description

Technical Field

[0001] This invention relates to the field of laboratory instrument technology, specifically to a laboratory instrument rack. Background Technology

[0002] Laboratory instruments typically refer to various equipment, tools, and instruments used for medical testing, laboratory analysis, or scientific research. They are used for tasks such as analyzing biological samples and detecting chemical substances. Instruments usually use racks, which are supports or shelves used to store and display various instruments, tools, or items, making them easy to access, organize, and manage.

[0003] In the prior art, Chinese Patent No. CN111012517B discloses a laboratory instrument rack, belonging to the field of laboratory instruments. Its key technical features include a storage box and a placement plate. A lifting mechanism and a transmission mechanism are fixedly installed on the inner wall of the storage box. Two cover plates are movably mounted on the opening of the storage box via the transmission mechanism. The lifting mechanism includes an electric push rod, and the placement plate is fixedly connected to the upper surface of the piston rod of the electric push rod. This invention, through the cooperation of the above-mentioned structures, facilitates the storage and carrying of instruments. Furthermore, instruments can be quickly moved out during use, while increasing the area available for instrument placement. This achieves the effect of convenient operation and dispersed placement of instruments, avoiding the phenomenon where instruments are clustered together due to a small placement area, making it inconvenient for medical staff to use. It solves the problem that most traditional racks are fixed, making it inconvenient to store and carry instruments. Furthermore, in the prior art, Chinese Patent No. CN212915741U discloses a laboratory instrument rack, including a fixed disc and a support rod. A fixed base is provided at the bottom of the support rod. A storage compartment is provided inside the fixed disc, and an adjustable movable cylinder is provided within the storage compartment. A mounting groove is provided on the lower end face of the movable cylinder, and the head of the support rod extends into the mounting groove. An annular support plate is provided at the bottom of the outer ring of the movable cylinder, and several partition plates are provided above the annular support plate on the outer ring of the movable cylinder. A storage opening is provided on the upper end face of the fixed disc, and an adjusting dial is provided at the center of the upper end face of the fixed disc. The laboratory instrument rack of this invention, by providing an adjustable movable cylinder within the fixed disc, and an annular support plate and partition plates around the movable cylinder, and by adjusting and switching via the upper adjusting dial, provides multiple easily switchable storage areas, facilitating use by operators. Furthermore, in the existing technology, Chinese Patent No. CN215029162U discloses a medical laboratory instrument rack, including a collection cabinet, and further comprising: a test tube storage device for collecting and placing test tubes; a petri dish collection device for collecting petri dishes; a linkage device installed between the test tube storage device and the petri dish collection device, which unfolds under the action of the linkage device when the test tube storage device is pressed down; and a large item fixing device installed on one side of the collection cabinet for collecting and placing beakers. Unlike existing laboratory storage racks, this device effectively divides the collection surfaces into different levels, and during use, the linkage device allows the top test tube storage device and the bottom petri dish collection device to fully unfold, greatly increasing the operator's working area and thus improving the efficiency of the device. Most of the placement racks currently used in the market still have certain shortcomings. As shown in the above document, when using the device, the instrument can be quickly moved out, and the area where the instrument can be placed is increased. The way the placement rack area is increased is relatively simple and cannot be used in a way that better suits the needs. As shown in the document above, an annular support plate and a partition plate are set on the outer ring of the movable cylinder, and the adjustment dial above can be used to switch between them, so that the shelf has multiple easily switchable placement areas. However, this method can only store a limited number of items. Secondly, when retrieving items, the storage opening needs to be aligned with the designated position, which is relatively troublesome to operate. Furthermore, it is not convenient to restrict the items when placing them, and the items are easily damaged as the shelf shakes. Therefore, there are certain shortcomings in its use. Summary of the Invention

[0004] The purpose of this invention is to provide a laboratory instrument rack to solve the problems mentioned in the background art, such as the inconvenience of using different placement methods according to different instruments, the inconvenience of storing special and valuable instruments separately, and the instability of the instrument rack, which makes the instruments easily damaged by external forces.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laboratory instrument rack, comprising a rack body, a display rack fixed to the top of the rack body, and a cabinet connected to the front of the rack body; The frame body has two hinged connections to first connecting plates on both sides. The frame body has a multi-positioning mechanism on its side, each mechanism including a second connecting plate hinged to the side of the first connecting plate. A first rotating shaft is fixed to the side of the frame body, with a rotating rod rotatably connected to its inner side. A first connecting rod slides through the rotating shaft, and a second connecting rod slides through the first connecting rod. Both the rotating shaft and the first connecting rod have sliding grooves on their inner sides, with sliding blocks sliding within these grooves. A first threaded block is connected to the back of each sliding block via a bearing, and the first threaded block is threadedly connected to both the rotating shaft and the first connecting rod. Inside, the first connecting rod and the second connecting rod each have a first positioning groove on their right side, and the first connecting rod and the second connecting rod each have a second positioning groove on their right side away from the first positioning groove. A first limiting block is fixed inside the sliding groove of the rotating rod away from the rotating rod. The first limiting block slides through the first limiting groove. The first limiting groove is located on the left side of the first connecting rod. A second limiting block is fixed inside the sliding groove of the first connecting rod away from the first connecting rod. The second limiting block slides through the second limiting groove. The second limiting groove is located on the left side of the second connecting rod. A second rotating shaft is rotatably connected to the bottom end of the second connecting rod. The second rotating shaft is fixed inside the second connecting plate. The top of the main body of the frame has symmetrical storage cavities on the left and right sides, and the storage cavities are equipped with lifting mechanisms for the separate placement of precision and valuable instruments. The storage cavity is connected to a placement plate, and the top of the placement plate is equipped with a squeezing mechanism for fixing precision and valuable instruments.

[0006] Furthermore, the sliding block is engaged with the first positioning groove and the second positioning groove, the first threaded block is threadedly connected with the rotating rod and the first connecting rod, the rotating rod and the first limiting block form an integral structure, the first connecting rod and the second limiting block form an integral structure, and the rotating rod is rotatably connected to the second rotating shaft through the first rotating shaft and the second rotating shaft.

[0007] Furthermore, the lifting mechanism includes a first guide groove, which is located at the bottom of the storage cavity. A first guide block slides inside the first guide groove. A third rotating shaft is fixed to the top of the first guide block and inside the storage cavity. The first guide block slides through the first guide groove.

[0008] Furthermore, a second guide groove is provided at the bottom of the placement plate, a second guide block slides inside the second guide groove, and a fourth rotating shaft is fixed to both the second guide block and the bottom of the placement plate. The fourth rotating shaft slides through the second guide groove.

[0009] Furthermore, a lifting frame is rotatably connected between the fourth rotating shaft and the third rotating shaft, and a threaded rod is rotatably inserted through the first guide groove and the first guide block. A motor is connected to the right end of the threaded rod, and the motor is installed inside the first guide groove.

[0010] Furthermore, a gear is rotatably inserted through the storage cavity and the inside of the shelf body, a cam is fixed to the end of the gear, and a movable groove is provided on the back of the shelf body near the cam, with a movable block sliding through the movable groove.

[0011] Furthermore, a push block is fixed to the end of the movable block, and the push block slides through the inner side of the top of the frame body. A rotating plate is also rotatably mounted on the inner side of the top of the frame body. A rack block is meshed with the side of the gear, and a telescopic block is fixed to the side of the rack block. The telescopic block slides through the telescopic groove, and a spring is connected between the telescopic groove and the telescopic block.

[0012] Furthermore, the first guide groove and the first guide block are slidably connected, the second guide groove and the second guide block are slidably connected, the third rotating shaft and the fourth rotating shaft are connected to the lifting frame in a transmission manner, and the first guide block and the threaded rod are connected in a threaded manner.

[0013] Furthermore, the rack block and the telescopic block are an integral structure, the telescopic block forms a telescopic structure through a spring and a telescopic groove, and the push block and the rotating plate are in close contact.

[0014] Furthermore, the extrusion mechanism includes a chute, which is formed on the top of the placement plate. A slider is symmetrically slidably through the chute. A fixing block is fixed on the top of the slider. A telescopic plate is connected to the top of the fixing block. A second threaded block is threadedly connected through the telescopic plate. The second threaded block is mounted on the top of the fixing block by a bearing. A limiting block is fixed on the top of the fixing block near the second threaded block. The limiting block slides through the telescopic plate.

[0015] Furthermore, the slider and the groove are slidably connected, the slider, the fixing block and the limiting block are an integral structure, and the second threaded block and the telescopic plate are threadedly connected.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This laboratory instrument rack, after the rotating rod, the first connecting rod, and the second connecting rod are positioned, can support the second connecting plate. When supported, the first connecting plate and the second connecting plate can rotate to the same horizontal position as the rack body, thereby increasing the placement area of ​​the rack body and improving the versatility of instrument placement. When the placement plate moves, it can slide down through the storage cavity, allowing valuable and precision instruments to be moved into the storage cavity for separate storage and protection. When the telescopic plate squeezes the instruments, it causes the instruments to be stably connected to the placement plate, improving the stability of the instruments when placed on the surface of the placement plate and preventing the instruments from falling and being damaged after the rack is hit by external force. 2. It is equipped with a first connecting rod and a second connecting rod. The sliding extension of the first connecting rod and the second connecting rod can greatly increase the extension distance of the rotating rod, so that the first connecting plate and the second connecting plate can be rotated to form a variety of combination methods, realizing a variety of placement methods for instruments on the placement rack; 3. Equipped with a lifting frame, which can protect special precision instruments from accidental contact with the main surface of the frame. The independent placement space can also be used to place some dangerous items. Multiple uses can better meet practical needs. 4. Equipped with gears, after the placement plate is moved to the designated position, the rotation of the gears can drive the rotating plate to rotate, so that the top of the storage cavity can be closed when storing instruments, without affecting the normal use of the main body of the frame, and no separate operation is required, which improves the convenience of use; 5. Equipped with a telescopic plate, the instrument can be pressed and positioned, improving its stability on the plate surface and preventing it from tipping over and breaking under external force, thus further enhancing the protection of the instrument. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall frontal three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall rear-view three-dimensional structure of the present invention; Figure 3 This is an enlarged three-dimensional structural diagram of the rotating rod of the present invention; Figure 4 This is a cross-sectional three-dimensional structural diagram of the rotating rod of the present invention; Figure 5 For the present invention Figure 4 Enlarged 3D structural diagram of section A; Figure 6 For the present invention Figure 4 Enlarged 3D structural diagram of section B; Figure 7 This is an enlarged three-dimensional structural diagram of the lifting frame of the present invention; Figure 8This is an enlarged three-dimensional structural diagram of the threaded rod of the present invention; Figure 9 This is an enlarged three-dimensional structural diagram of the rotating plate of the present invention; Figure 10 This is a schematic diagram of the magnified three-dimensional structure of the cam of the present invention; Figure 11 This is an enlarged three-dimensional structural diagram of the telescopic block of the present invention; Figure 12 This is a cross-sectional three-dimensional structural diagram of the placement plate of the present invention.

[0018] In the diagram: 1. Frame body; 101. First connecting plate; 102. Second connecting plate; 103. First rotating shaft; 104. Rotating rod; 105. First connecting rod; 106. Second connecting rod; 107. Sliding groove; 108. Sliding block; 109. First threaded block; 110. First positioning groove; 111. Second positioning groove; 112. First limiting block; 113. First limiting groove; 114. Second limiting block; 115. Second limiting groove; 116. Second rotating shaft; 117. Collection cavity; 118. First guide groove; 119. First guide block; 120. Third rotating shaft 121. Placement plate; 122. Second guide groove; 123. Second guide block; 124. Fourth rotating shaft; 125. Lifting frame; 126. Threaded rod; 127. Motor; 128. Gear; 129. Cam; 130. Movable groove; 131. Movable block; 132. Push block; 133. Rack block; 134. Telescopic block; 135. Telescopic groove; 136. Spring; 137. Slide groove; 138. Slider; 139. Fixed block; 140. Telescopic plate; 141. Second threaded block; 142. Limiting block; 143. Rotating plate; 2. Display rack; 3. Cabinet. Detailed Implementation

[0019] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0020] like Figures 1-6 The present invention provides the following technical solution to address the problem that instrument racks are inconvenient for using different placement methods depending on the instruments: A placement mechanism is disclosed. The system includes a frame body 1, a display rack 2 fixed to the top of the frame body 1, a cabinet 3 connected to the front of the frame body 1, and first connecting plates 101 connected to both sides of the frame body 1 via hinges. The frame body 1 has a multi-positioning mechanism on its side, including a second connecting plate 102, which is hinged to the side of the first connecting plate 101. A first rotating shaft 103 is fixed to the side of the frame body 1, and a rotating rod 104 is rotatably connected to the inner side of the first rotating shaft 103. A first connecting rod 105 slides through the rotating rod 104, and a second connecting rod 106 slides through the first connecting rod 105. Both the rotating rod 104 and the first connecting rod 105 have sliding grooves 107 on their inner sides. A sliding block 108 slides inside the sliding groove 107. A first threaded block 109 is connected to the back of the sliding block 108 via a bearing. The first threaded block 109 is threaded through and connected to the rotating rod 104 and the first connecting rod 105 respectively. The first connecting rod 105 and the second connecting rod 106 each have a first positioning groove 110 on their right sides. The first connecting rod 105 and the second connecting rod 106 away from the first positioning groove 110 each have a second positioning groove 111 on their right sides. A first limiting device is fixed inside the rotating rod 104 at the sliding groove 107 away from the rotating rod 104. Position block 112, first limiting block 112 slides through inside first limiting groove 113, first limiting groove 113 is opened on the left side of first connecting rod 105, sliding groove 107 away from first connecting rod 105, second limiting block 114 is fixed inside first connecting rod 105, second limiting block 114 slides through inside second limiting groove 115, second limiting groove 115 is opened on the left side of second connecting rod 106, second rotating shaft 116 is rotatably connected to the bottom end of second connecting rod 106, second rotating shaft 116 is fixed inside second connecting plate 102, storage cavities 117 are symmetrically opened on the top of frame body 1, storage cavities 117. 7 is equipped with a lifting mechanism for separately placing precision and valuable instruments. The storage cavity 117 is connected to a placement plate 121. The top of the placement plate 121 is equipped with a pressing mechanism for fixing precision and valuable instruments. The sliding block 108 is engaged with the first positioning groove 110 and the second positioning groove 111. The first threaded block 109 is threadedly connected with the rotating rod 104 and the first connecting rod 105 respectively. The rotating rod 104 is integrated with the first limiting block 112. The first connecting rod 105 is integrated with the second limiting block 114. The rotating rod 104 is rotatably connected to the second rotating shaft 116 through the first rotating shaft 103. When in use, the testing instruments can be placed inside the second connecting plate 102. The instruments are protected by the first connecting plate 101 and the frame body 1. The second connecting plate 102 can also be rotated via a hinge with the first connecting plate 101. When the second connecting plate 102 rotates to a certain position, it can move the first connecting plate 101. As the first connecting plate 101 moves, it can rotate via the hinge with the frame body 1. Simultaneously, the rotation of the second connecting plate 102 can move the second rotating shaft 116. When the second rotating shaft 116 moves, it can drive the rotating rod 104 to rotate via the first rotating shaft 103. At the same time, the second rotating shaft 116 can... This causes the second connecting rod 106 to move. When the second connecting rod 106 moves, it can cause the second positioning groove 111 and the second limiting groove 115 to move. When the second limiting groove 115 moves, it can slide through the second limiting block 114. When the inner wall of the second limiting groove 115 slides to the side of the second limiting block 114, it can be squeezed. When the second limiting block 114 is squeezed, it can cause the first connecting rod 105 to move. When the first connecting rod 105 moves, it can cause the other second positioning groove 111 and the first limiting groove 113 to move. When the first limiting groove 113 moves, it can slide through the first limiting block 112. The first connecting rod 105 and the second connecting rod 106 move together. 6. After sliding to the designated position, the two second positioning grooves 111 can move to the side of the sliding block 108 between the rotating rod 104 and the first connecting rod 105. At this time, the first threaded block 109 of the rotating rod 104 can slide threadedly through the rotating rod 104. When the first threaded block 109 slides threadedly, it can drive the bearing to rotate and move. When the bearing rotates, it can drive the sliding block 108 and the first threaded block 109 to rotate. When the bearing moves, it can push the sliding block 108 to move. When the sliding block 108 moves, it can slide through the sliding groove 107. When the sliding block 108 slides into the second positioning groove 111, it can be squeezed and positioned. After the sliding block 108 of 104 is positioned with the second positioning groove 111, it can drive the first connecting rod 105 to be positioned. The sliding block 108 of the first connecting rod 105 is operated in the same way. The sliding block 108 of the first connecting rod 105 can be pressed and positioned with the second positioning groove 111 of the second connecting rod 106. After the rotating rod 104, the first connecting rod 105 and the second connecting rod 106 are positioned, they can support the second connecting plate 102. When supported, the first connecting plate 101 and the second connecting plate 102 can be rotated to the same horizontal position as the frame body 1, thereby increasing the placement area of ​​the frame body 1 and improving the diversity of placing equipment on the rack. Example

[0021] like Figures 7-11 The present invention provides the following technical solution to address the problem that instrument storage racks are inconvenient for individually storing unique and valuable instruments, have frequent contact with the outside world, and are not very safe: A lifting mechanism is disclosed. The lifting mechanism includes a first guide groove 118, which is located at the bottom of the storage cavity 117. A first guide block 119 slides inside the first guide groove 118. A third rotating shaft 120 is fixed to the top of the first guide block 119 and inside the storage cavity 117. The first guide block 119 slides through the first guide groove 118. A second guide groove 122 is located at the bottom of the placement plate 121. A second guide block 123 slides inside the second guide groove 122. The second guide block 123 is connected to the bottom of the placement plate 121. A fourth rotating shaft 124 is fixed to each of the three shafts. The fourth rotating shaft 124 slides through the second guide groove 122. A lifting frame 125 is rotatably connected between the fourth rotating shaft 124 and the third rotating shaft 120. A threaded rod 126 rotates through the first guide groove 118 and the first guide block 119. A motor 127 is connected to the right end of the threaded rod 126. The motor 127 is installed inside the first guide groove 118. A gear 128 rotates through the storage cavity 117 and the frame body 1. A cam 129 is fixed to the end of the gear 128. A movable groove 130 is provided on the back of the frame body 1 near the cam 129. A movable block 131 slides through the movable groove 130. A push block 132 is fixed to the end of the movable block 131. The push block 132 slides through the inner top of the frame body 1. A rotating plate 143 is also rotatable on the inner top of the frame body 1. A rack block 133 is meshed with the side of the gear 128. A telescopic block 134 is fixed to the side of the rack block 133. The telescopic block 134 slides through the telescopic groove 135. Between the telescopic groove 135 and the telescopic block 134... A spring 136 is connected. The first guide groove 118 and the first guide block 119 are slidably connected. The second guide groove 122 and the second guide block 123 are slidably connected. The third rotating shaft 120 and the fourth rotating shaft 124 are connected to the lifting frame 125. The first guide block 119 and the threaded rod 126 are threadedly connected. The rack block 133 and the telescopic block 134 are an integral structure. The telescopic block 134 is telescopically connected to the telescopic groove 135 through the spring 136. The push block 132 and the rotating plate 143 are in close contact. When valuable and precision instruments need to be placed on the shelf, the instruments are placed on the surface of the shelf 121. After placement, the output of the motor 127 is activated, which drives the threaded rod 126 to rotate. The rotation of the threaded rod 126 drives the first guide block 119 to slide threadedly. The first guide block 119 slides through the first guide groove 118, simultaneously driving the third rotating shaft 120 to move. The movement of the third rotating shaft 120 drives the lifting frame 125 to rotate, which in turn drives the fourth rotating shaft 124 to move. The movement of the fourth rotating shaft 124 drives the second guide block 123 to move, sliding through the second guide groove 122. Simultaneously, the sliding of the second guide block 123 drives the shelf 121 to move. The shelf 121 slides downwards through the storage cavity 117, allowing the valuable and precision instruments to be moved into the storage cavity 117 for individual storage and protection. When 121 moves downward, it can move to the top of the rack block 133 to compress it. When the rack block 133 is compressed, it can drive the telescopic block 134 to move. When the telescopic block 134 moves, it can slide through the telescopic groove 135. When the telescopic block 134 slides, it can compress the spring 136. At the same time, when the rack block 133 slides, it can drive the gear 128 to mesh and rotate. When the gear 128 meshes and rotates, it can rotate through the frame body 1 and the storage cavity 117. When the gear 128 rotates, it can drive the cam 129 to rotate. When the cam 129 rotates to the bottom of the push block 132, it can compress it. When the push block 132 compresses, it can drive the movable block 131. When the movable block 131 moves, it can slide through the movable groove 130. When the push block 132 slides to the bottom of the rotating plate 143, it can compress it. When the rotating plate 143 is compressed, it can rotate through the frame body 1. When the rotating plate 143 rotates to the top of the storage cavity 117, it can close, which improves the protection effect of the shelf for valuable and precision instruments. Example

[0022] like Figure 1 , Figure 2 and Figure 12 The present invention provides the following technical solution to address the problem that the instrument placement rack is unstable and easily damaged by external forces, increasing the probability of instrument damage: A compression mechanism is disclosed. The extrusion mechanism includes a slide groove 137, which is located on the top of the placement plate 121. A slider 138 slides symmetrically through the slide groove 137. A fixing block 139 is fixed to the top of the slider 138. A telescopic plate 140 is connected to the top of the fixing block 139. A second threaded block 141 is threadedly connected to the telescopic plate 140. The second threaded block 141 is mounted on the top of the fixing block 139 via a bearing. A limiting block 142 is fixed to the top of the fixing block 139 near the second threaded block 141 and slides through the telescopic plate 140. The slider 138 and the slide groove 137 are slidably connected. The slider 138, fixing block 139, and limiting block 142 are an integral structure. The second threaded block 141 and the telescopic plate 140 are threadedly connected. Valuable and precision instruments are placed in the placement... When the telescopic plate 140 is on the surface of plate 121, pushing the telescopic plate 140 can drive the slider 138 to move. When the slider 138 moves, it can slide through the slide groove 137. When the telescopic plate 140 slides to the designated position surface of the instrument base, the second threaded block 141 rotates. When the second threaded block 141 rotates, it can rotate through the fixing block 139. When the second threaded block 141 rotates, it can drive the telescopic plate 140 to slide threadedly. When the telescopic plate 140 slides threadedly, it can slide through the limiting block 142. When the telescopic plate 140 slides to the designated position on the surface of the precision instrument, it can squeeze. When the telescopic plate 140 squeezes the instrument, it drives the instrument to be stably connected to the placement plate 121, which improves the stability of the instrument when it is placed on the surface of the placement plate 121 and prevents the instrument from falling and being damaged after the placement frame is hit by external force.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laboratory instrument rack, comprising a rack body (1), a display rack (2) fixed to the top of the rack body (1), and a cabinet (3) connected to the front of the rack body (1), characterized in that... ； The frame body (1) has a first connecting plate (101) connected to both sides by hinges. The frame body (1) has a placement mechanism with multiple placement methods on its side. The placement mechanism includes a second connecting plate (102), and the second connecting plate (102) is connected to the side of the first connecting plate (101) by hinges. The frame body (1) has a first rotating shaft (103) fixed on its side. A rotating rod (104) is rotatably connected to the inside of the first rotating shaft (103). The first connecting rod slides through the rotating rod (104). (105), a second connecting rod (106) slides through the first connecting rod (105). Sliding grooves (107) are provided on the inner sides of both the rotating rod (104) and the first connecting rod (105). A sliding block (108) slides inside the sliding groove (107). A first threaded block (109) is connected to the back of the sliding block (108) via a bearing. The first threaded block (109) is threaded through and connected to both the rotating rod (104) and the first connecting rod (105). (105) and the second connecting rod (106) both have a first positioning groove (110) on their right sides. The first connecting rod (105) and the second connecting rod (106) both have a second positioning groove (111) on their right sides away from the first positioning groove (110). The sliding groove (107) away from the rotating rod (104) has a first limiting block (112) fixed inside the rotating rod (104). The first limiting block (112) slides through the first limiting groove (113). The first limiting groove (113) is opened in the first limiting groove (113). On the left side of the first connecting rod (105), away from the sliding groove (107) of the first connecting rod (105), a second limiting block (114) is fixed inside the first connecting rod (105). The second limiting block (114) slides through the second limiting groove (115). The second limiting groove (115) is opened on the left side of the second connecting rod (106). The bottom end of the second connecting rod (106) is rotatably connected to a second rotating shaft (116). The second rotating shaft (116) is fixed inside the second connecting plate (102). The main body of the frame (1) has symmetrical storage cavities (117) on the top left and right, and the storage cavities (117) are equipped with a lifting mechanism for separately placing precision and valuable instruments. The storage cavity (117) is connected to a placement plate (121), and the top of the placement plate (121) is provided with a squeezing mechanism for fixing precision and valuable instruments.

2. The laboratory instrument rack according to claim 1, characterized in that: The sliding block (108) is engaged with the first positioning groove (110) and the second positioning groove (111). The first threaded block (109) is threaded with the rotating rod (104) and the first connecting rod (105) respectively. The rotating rod (104) is integrated with the first limiting block (112). The first connecting rod (105) is integrated with the second limiting block (114). The rotating rod (104) is rotatably connected with the second rotating shaft (116) through the first rotating shaft (103).

3. The laboratory instrument rack according to claim 1, characterized in that: The lifting mechanism includes a first guide groove (118), which is located at the bottom of the storage cavity (117). A first guide block (119) slides inside the first guide groove (118). A third rotating shaft (120) is fixed to the top of the first guide block (119) and inside the storage cavity (117). The first guide block (119) slides through the first guide groove (118). A second guide groove (122) is provided at the bottom of the placement plate (121). A second guide block (123) slides inside the second guide groove (122). A fourth rotating shaft (124) is fixed to the bottom of the second guide block (123) and the placement plate (121). The fourth rotating shaft (124) slides through the second guide groove (122).

4. A laboratory instrument rack according to claim 3, characterized in that: A lifting frame (125) is rotatably connected between the fourth rotating shaft (124) and the third rotating shaft (120). A threaded rod (126) is rotatably inserted through the first guide groove (118) and the first guide block (119). A motor (127) is connected to the right end of the threaded rod (126). The motor (127) is installed inside the first guide groove (118). A gear (128) is rotatably inserted through the storage cavity (117) and the frame body (1). A cam (129) is fixed at the end of the gear (128). A movable groove (130) is provided on the back of the frame body (1) near the cam (129). A movable block (131) slides through the movable groove (130).

5. A laboratory instrument rack according to claim 4, characterized in that: The movable block (131) is fixed with a push block (132) at its end. The push block (132) slides through the inner side of the top of the frame body (1). A rotating plate (143) also rotates on the inner side of the top of the frame body (1). A rack block (133) is meshed with the side of the gear (128). A telescopic block (134) is fixed on the side of the rack block (133). The telescopic block (134) slides through the inside of the telescopic groove (135). A spring (136) is connected between the telescopic groove (135) and the telescopic block (134).

6. A laboratory instrument rack according to claim 3, characterized in that: The first guide groove (118) and the first guide block (119) are slidably connected, the second guide groove (122) and the second guide block (123) are slidably connected, the third rotating shaft (120), the fourth rotating shaft (124) and the lifting frame (125) are connected by transmission, and the first guide block (119) and the threaded rod (126) are connected by thread.

7. A laboratory instrument rack according to claim 5, characterized in that: The rack block (133) and the telescopic block (134) are an integral structure. The telescopic block (134) forms a telescopic structure through the spring (136) and the telescopic groove (135). The push block (132) and the rotating plate (143) are in close contact.

8. A laboratory instrument rack according to claim 1, characterized in that: The extrusion mechanism includes a chute (137) which is located on the top of the placement plate (121). A slider (138) slides symmetrically through the chute (137). A fixing block (139) is fixed on the top of the slider (138). A telescopic plate (140) is connected to the top of the fixing block (139). A second threaded block (141) is threaded through the telescopic plate (140). The second threaded block (141) is mounted on the top of the fixing block (139) by a bearing. A limiting block (142) is fixed on the top of the fixing block (139) near the second threaded block (141). The limiting block (142) slides through the telescopic plate (140).

9. A laboratory instrument rack according to claim 8, characterized in that: The slider (138) and the groove (137) are slidably connected. The slider (138), the fixing block (139) and the limiting block (142) are an integral structure. The second threaded block (141) and the telescopic plate (140) are threadedly connected.

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