Tinfoil packaged tablet taking device
By designing a foil-encapsulated tablet dispenser, and utilizing a combination of an adjusting plate and a pressing plate, the problem of time-consuming and laborious traditional manual tablet dispensing was solved, enabling rapid and simultaneous tablet dispensing and improving dispensing efficiency.
Patent Information
- Application Number
- CN202423266611.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Traditional manual removal of tablets from their foil-wrapped casings is time-consuming, labor-intensive, and inefficient.
Design a foil-packaged tablet dispenser, including a base, a mounting platform, a pressing plate, an adjusting plate, and a support plate. The adjusting plate holds the tablet, and the pressing plate squeezes the raised surface of the tablet, causing the tablet to be squeezed out of the tablet and fall into the tablet tray. The tablet is then removed by the rebound force of the spring.
It enables rapid and simultaneous removal of tablets, improving medication dispensing efficiency and reducing manual operation time.
Smart Images

Figure CN223619111U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medicine dispensing technology, and in particular to a tin foil-packaged tablet dispensing device. Background Technology
[0002] In the process of accurately dispensing tablets for patients, traditional methods often rely on the manual operation of medical staff or pharmacists to peel the tablets one by one from the tightly sealed shell when using tablets protected by tin foil. For dispensing large doses of tablets, it is time-consuming, labor-intensive and inefficient to manually remove the tablets one by one from the tin foil shell.
[0003] Therefore, overcoming the shortcomings of the existing technology is an urgent problem to be solved in this technical field. Utility Model Content
[0004] The technical problem this invention aims to solve is that manually removing each tablet from its foil-sealed casing is time-consuming, labor-intensive, and inefficient.
[0005] On the one hand, this utility model provides a foil-packaged tablet dispenser, including: a base 1, a mounting platform 2, a pressing plate 3, two adjusting plates 4 and a plurality of supporting plates 5 located between the two adjusting plates 4, wherein the bottom surface of the supporting plates 5 is fixed to the surface of the medicine tray 6;
[0006] The adjusting plate 4 is slidably connected to the base 1. A connecting column 10 is provided between the base 1 and the mounting platform 2. The lower end of the connecting column 10 is fixedly connected to the base 1, and the upper end of the connecting column 10 is fixedly connected to the mounting platform 2. The adjusting plate 4, the support plate 5, and the medicine tray 6 are located between the base 1 and the mounting platform 2. A plurality of springs 20 are provided between the mounting platform 2 and the pressing plate 3. One end of the spring 20 is fixedly connected to the upper surface of the mounting platform 2, and the other end of the spring 20 is fixedly connected to the lower surface of the pressing plate 3.
[0007] The adjusting plate 4 is used to clamp the medicine plate 7. The medicine plate 7 has a convex surface of the medicine tablets and is located close to the pressing plate 3. The support plate 5 is supported in the gap between each row of medicine tablets on the flat surface of the medicine plate 7.
[0008] The bottom surface of the pressing plate 3 is provided with a pressing sheet 31, and the bottom surface of the pressing sheet 31 is provided with a plurality of pressing protrusions 311. The pressing protrusions 311 are arranged in an array, and the pressing protrusions 311 correspond to the protrusions of the medicine tablets on the medicine plate 7.
[0009] Preferably, the upper surface of the base 1 is provided with a sink 11, and the medicine tray 6 is placed in the sink 11;
[0010] The front end of the settling trough 11 is provided with a first inclined surface 110, which is used to allow the tablets that fall onto the edge of the settling trough 11 to slide into the medicine tray 6.
[0011] Preferably, the surfaces of the protrusions on both sides of the sink 11 are respectively provided with first sliding grooves 12, and the bottom of the adjusting plate 4 is provided with a guide slider 40, which is slidably connected to the first sliding grooves 12.
[0012] Preferably, the adjusting plate 4 is L-shaped, the horizontal surface of the adjusting plate 4 is provided with a groove 41, the base 1 is provided with a threaded hole 13, and the projection of the groove 41 on the base 1 covers the threaded hole 13;
[0013] The adjustment plate 4 includes a fixed knob 42, which passes through the slot 41 and is threadedly connected to the threaded hole 13. The bottom surface of the handle part of the fixed knob 42 abuts against the surface of the adjustment plate 4.
[0014] Preferably, the handheld part is provided with an anti-slip pattern.
[0015] Preferably, the outer end face of the horizontal plane of the adjustment plate 4 is provided with a hand-held protrusion 43, which is used to receive external force to move the adjustment plate 4.
[0016] Preferably, the lower surface of the pressing plate 3 is provided with a pressing boss 30, the middle part of the mounting platform 2 is provided with a through groove 21, the through groove 21 is used to accommodate the pressing boss 30, and the pressing piece 31 is provided on the bottom surface of the pressing boss 30.
[0017] Preferably, the pressing piece 31 is slidably connected to the pressing boss 30.
[0018] Preferably, the pressing plate 31 is provided with mounting wings 310 on both sides, the lower surface of the pressing boss 30 is provided with a mounting groove 300, the mounting groove 300 is provided with second sliding grooves 301 on both sides, and the mounting wings 310 and the second sliding grooves 301 are slidably connected.
[0019] Preferably, the upper surface of the mounting platform 2 is provided with a plurality of hollow height limiting columns 22, the height limiting columns 22 are fixedly connected to the mounting platform 2, and some of the springs 20 are disposed in the hollow structure of the height limiting columns 22.
[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: Adjusting the position between the two adjusting plates 4 so that the distance between the two adjusting plates 4 is the same as the width of the foil-encapsulated medicine plate 7 limits the position of the medicine plate 7. The pressing plate 31 is inserted into the preset position of the pressing plate 3, and the medicine plate 7 is placed between the pressing plate 3 and the support plate 5, with the protruding surface of the encapsulated tablets on the medicine plate 7 facing upwards. The support plate 5 supports the medicine plate 7 at the gap between each row of tablets on its flat surface. Pressing the pressing plate 3 squeezes the protruding surface of the medicine plate 7, squeezing the tablets out of the medicine plate 7 and causing them to fall into the medicine tray 6. Releasing the pressing plate 3 causes it to lift upwards under the force of the spring 20, removing the medicine tray 6 along with the support plate 5, and pouring the tablets into a specific container. Using the foil-encapsulated tablet dispenser provided by this utility model, all tablets on a single dispensing plate 7 can be peeled off simultaneously, effectively improving dispensing efficiency. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly described below. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.
[0022] Figure 1 This is a schematic diagram of the overall structure of a foil-encapsulated tablet dispenser provided in an embodiment of this utility model;
[0023] Figure 2 This is a schematic diagram of the pressing protrusion and the tablet plate of a foil-encapsulated tablet dispenser provided in an embodiment of this utility model;
[0024] Figure 2a This is a bottom view of the pressing protrusion and the medicine plate of a foil-encapsulated tablet dispenser provided in an embodiment of this utility model;
[0025] Figure 3 This is a schematic diagram of a tin foil-packaged tablet dispenser with a tablet plate placed on it, according to an embodiment of this utility model.
[0026] Figure 4 This is a schematic diagram of the base of a foil-packaged tablet dispenser provided in an embodiment of this utility model;
[0027] Figure 5 This is a schematic diagram of the adjustment plate of a foil-encapsulated tablet dispenser provided in an embodiment of this utility model;
[0028] Figure 6 This is a schematic diagram of the pressing plate of a foil-encapsulated tablet dispenser provided in an embodiment of this utility model;
[0029] Figure 7 This is a schematic diagram of the mounting wing and mounting groove of a foil-encapsulated tablet dispenser provided in an embodiment of this utility model;
[0030] Figure 8 This is a schematic diagram of the notch in the medicine tray of a foil-packaged tablet dispenser provided in an embodiment of this utility model. Detailed Implementation
[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0032] Unless the context otherwise requires, throughout the specification and claims, the term "comprising" is interpreted as openly inclusive, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiment," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples; that is, although they may be incorporated into embodiments or examples using the above terms for reasons such as order and position, it does not limit them to be incorporated in combination by a single embodiment or example.
[0033] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0034] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more. Furthermore, for example, the description may use the prefix "A" or "B" to describe the same type of nouns as two independent entities. In this case, the features defined with "A" and "B" are used only to distinguish between similar entities and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features.
[0035] In the description of this utility model, the expression "A and / or B" (where A and B are used to formally represent specific features) will be involved. The corresponding expression includes the following three combinations: only A, only B, and a combination of A and B.
[0036] As used in this invention, “about,” “approximately,” or “approximately” includes the stated value and the average value within an acceptable range of deviation from the specified value, wherein the acceptable range of deviation is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the specified quantity (i.e., the limitations of the measurement system).
[0037] Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0038] Example 1:
[0039] Embodiment 1 of this utility model provides a foil-packaged tablet dispenser, such as... Figure 1 As shown, it includes: a base 1, a mounting platform 2, a pressing plate 3, two adjusting plates 4, and several support plates 5 located between the two adjusting plates 4, the bottom surface of the support plates 5 being fixed to the surface of the medicine tray 6.
[0040] The adjusting plate 4 is slidably connected to the base 1. A connecting column 10 is provided between the base 1 and the mounting platform 2. The lower end of the connecting column 10 is fixedly connected to the base 1, and the upper end of the connecting column 10 is fixedly connected to the mounting platform 2. The adjusting plate 4, the support plate 5, and the medicine tray 6 are located between the base 1 and the mounting platform 2. A plurality of springs 20 are provided between the mounting platform 2 and the pressing plate 3. One end of the spring 20 is fixedly connected to the upper surface of the mounting platform 2, and the other end of the spring 20 is fixedly connected to the lower surface of the pressing plate 3. The adjusting plate 4 is used to clamp the medicine plate 7. The medicine plate 7 has a convex surface of the medicine tablets that is close to the pressing plate 3. The support plate 5 is supported at the gap between each row of medicine tablets on the flat surface of the medicine plate 7.
[0041] In one embodiment, the foil-wrapped tablet dispenser is suitable for dispensing tablets from a foil-wrapped blister pack 7. In actual use, the adjusting plate 4 is used to hold the blister pack 7, which has a raised surface with tablets positioned near the pressing plate 3. The support plate 5 supports the tablets at the gaps between each row of tablets on the flat surface of the blister pack 7. In this embodiment, the tablets include drugs in the form of tablets, capsules, or pills packaged in foil.
[0042] In order to better apply pressure to the raised surface on the medicine plate 7 by pressing the boss 30, such as Figure 2 and Figure 2a As shown, the bottom surface of the pressing plate 3 is provided with a pressing sheet 31, and the bottom surface of the pressing sheet 31 is provided with a plurality of pressing protrusions 311. The pressing protrusions 311 are arranged in an array, and the pressing protrusions 311 correspond to the protrusions of the medicine tablets on the medicine plate 7.
[0043] The blister pack 7 has multiple rows of tablets arranged on it, with gaps between adjacent rows. The blister pack 7 has a flat surface and a raised surface; the side containing the tablets is the raised surface, and the side opposite the raised surface is the flat surface. The flat surface of the blister pack 7 contacts the support plate 5, and the raised surface of the blister pack 7 is located adjacent to the pressing plate 3 to receive the pressure applied by the pressing plate 3.
[0044] like Figure 3 As shown, the side of the adjusting plate 4 abuts against the edge of the medicine plate 7 to clamp the medicine plate 7 between the two adjusting plates 4. To prevent the medicine plate 7 located between the adjusting plate 4 and the support plate 5 from being bent due to lack of support when the pressing plate 3 is pressed down, the inner side of the adjusting plate 4 is provided with a support protrusion 44 to support the edge of the medicine plate 7; the support plate 5 supports the gap between each row of medicine tablets in the medicine plate 7. When the pressing plate 3 applies pressure to the protruding surface of the medicine plate 7, the support plate 5 acts as a fulcrum. Based on this, there is a predetermined height difference between the adjusting plate 4 and the support plate 5 (e.g., ...). Figure 3The position of the medicine plate 7 shown is such that the height difference can just accommodate the thickness of the medicine plate 7. For example, if the thickness of the medicine plate 7 is 1 mm, then the adjusting plate 4 is about 1 mm higher than the supporting plate 5.
[0045] To prevent damage to the springs 20 due to excessive force during operation, the upper surface of the mounting platform 2 is provided with multiple hollow height-limiting posts 22. These posts 22 are fixedly connected to the mounting platform 2, and some of the springs 20 are housed within the hollow structure of the height-limiting posts 22. When the pressing plate 3 is pressed, the distance between the pressing plate 3 and the mounting platform 2 is limited by the height-limiting posts 22, thereby protecting the springs 20 from excessive compression and damage.
[0046] According to the above scheme, adjust the position between the two adjusting plates 4 so that the distance between the two adjusting plates 4 is the same as the width of the foil-encapsulated medicine plate 7, thus limiting the position of the medicine plate 7. Insert the pressing plate 31 into the preset position of the pressing plate 3, and place the medicine plate 7 between the pressing plate 3 and the support plate 5, with the convex surface of the medicine plate 7 facing upwards. The support plate 5 supports the medicine plate 7 at the gap between each row of tablets on the flat surface of the medicine plate 7. Press down the pressing plate 3, which will squeeze the convex surface of the medicine plate 7, squeezing the tablets out of the medicine plate 7 and dropping them into the medicine tray 6. Release the pressing plate 3, which will be lifted upwards under the force of the spring 20, and remove the medicine tray 6 along with the support plate 5. Pour the tablets into a specific container.
[0047] The medicine tray 6 and the support plate 5 can be customized according to the arrangement of the tablets on the medicine plate 7. Different medicine trays 6 and support plates 5 are used when taking medicine from different medicine plates 7. The tin foil-encapsulated tablet taker provided by this utility model can peel off all the tablets on a medicine plate 7 at the same time, effectively improving the medicine dispensing efficiency.
[0048] For the medicine tray 6, since the widths of different medicine plates 7 vary, the width between the two adjusting plates 4 also varies. If the medicine tray 6 is placed flush with the adjusting plates 4, then the specifications of the medicine tray 6 need to be customized according to the dimensions of the medicine plates 7. Different sizes of medicine tray 6 need to be customized to improve the versatility of the medicine tray 6. Figure 4 As shown, the upper surface of the base 1 is provided with a sink trough 11, and the medicine tray 6 is placed in the sink trough 11. Simultaneously, a first inclined surface 110 is provided at the front end of the sink trough 11, which is used to allow tablets that fall onto the edge of the sink trough 11 to slide into the medicine tray 6. By placing the medicine tray 6 in the sink trough 11, making it lower than the lower surface of the adjusting plate 4, it is unnecessary to customize medicine trays 6 of different sizes according to the size of the tablets 7. The same medicine tray 6 can be used for different sizes of tablets 7, improving the versatility of the medicine tray 6.
[0049] The above scheme mentions that the adjusting plate 4 and the base 1 are slidably connected. Specifically, the implementation scheme can be as follows: the surfaces of the protrusions on both sides of the recess 11 are respectively provided with first sliding grooves 12, such as... Figure 5 As shown, a guide slider 40 is provided at the bottom of the adjusting plate 4, and the guide slider 40 is slidably connected to the first slide groove 12. Since the adjusting plate 4 may move above the settling trough 11, the bottom height of the first slide groove 12 is slightly higher than the height of the medicine tray 6 to prevent the medicine tray 6 from obstructing the movement of the adjusting plate 4.
[0050] After the adjusting plate 4 is moved to the preset position, if the adjusting plate 4 is not fixed, its position may change during operation due to pressure from the pressing plate 3 or accidental contact. Therefore, if... Figure 1 , Figure 4 and Figure 5 As shown, the adjusting plate 4 is L-shaped, and a slot 41 is provided on the horizontal surface of the adjusting plate 4. The base 1 is provided with a threaded hole 13, and the projection of the slot 41 on the base 1 covers the threaded hole 13. The adjusting plate 4 includes a fixing knob 42 (e.g., Figure 1 As shown), the fixed knob 42 passes through the slot 41 and is threadedly connected to the threaded hole 13. The bottom surface of the handheld part of the fixed knob 42 abuts against the surface of the adjustment plate 4, and the handheld part is provided with anti-slip pattern.
[0051] During the movement of the adjusting plate 4, the fixing knob 42 is in a loose state. After the adjusting plate 4 is moved to the appropriate position, the fixing knob 42 is tightened to fix the adjusting plate 4. During the normal movement of the adjusting plate 4, the projection of the slot 41 on the base 1 always covers the threaded hole 13.
[0052] To facilitate the movement of the adjustment plate 4, a hand-held protrusion 43 is provided on the outer end face of the horizontal plane of the adjustment plate 4. The hand-held protrusion 43 is used to receive external force to move the adjustment plate 4.
[0053] For pressing plate 3, such as Figure 6 As shown, the lower surface of the pressing plate 3 is provided with a pressing boss 30, the middle part of the mounting platform 2 is provided with a through groove 21, the through groove 21 is used to accommodate the pressing boss 30, and the pressing piece 31 is provided on the bottom surface of the pressing boss 30.
[0054] In actual use, it is necessary to replace the corresponding pressing tablet 31 according to the distribution of the tablets on the blister pack 7. Therefore, the pressing tablet 31 is slidably connected to the pressing boss 30 so as to facilitate the removal of the pressing tablet 31.
[0055] The pressing plate 31 is slidably connected to the pressing boss 30, specifically including, for example Figure 7 As shown, the pressing plate 31 is provided with mounting wings 310 on both sides, the bottom surface of the pressing boss 30 is provided with a mounting groove 300, the mounting groove 300 is provided with second sliding grooves 301 on both sides, and the mounting wings 310 and the second sliding grooves 301 are slidably connected.
[0056] In practical applications, in order to ensure that the tablet is removed from the blister pack 7 in one go, when the pressing plate 3 is pressed to its limit position, the lowest point of the pressing protrusion 311 is slightly lower than the highest point of the support plate 5, thereby squeezing the tablet out of the blister pack 7.
[0057] In the preferred embodiment of the medicine tray 6 and the support plate 5, this embodiment also proposes a second combination scheme of the medicine tray 6 and the support plate 5, such as... Figure 8 As shown, the medicine tray 6 has several notches 60 on both sides. The notches 60 are used to insert and fix the support plate 5. The number and spacing of the support plates 5 are determined according to the arrangement of the medicine tablets on the medicine plate 7. The advantage of this preferred solution is that the medicine tray 6 and the support plate 5 are set separately, eliminating the need to process multiple support plates 5 and medicine trays 6, which is more convenient for processing and storage.
[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A foil-packaged tablet dispenser, characterized in that, include: The base (1), mounting platform (2), pressing plate (3), two adjusting plates (4) and several support plates (5) located between the two adjusting plates (4), the bottom surface of the support plates (5) being fixed to the surface of the medicine tray (6); The adjusting plate (4) is slidably connected to the base (1). A connecting column (10) is provided between the base (1) and the mounting platform (2). The lower end of the connecting column (10) is fixedly connected to the base (1), and the upper end of the connecting column (10) is fixedly connected to the mounting platform (2). The adjusting plate (4), the support plate (5), and the medicine tray (6) are located between the base (1) and the mounting platform (2). A plurality of springs (20) are provided between the mounting platform (2) and the pressing plate (3). One end of the spring (20) is fixedly connected to the upper surface of the mounting platform (2), and the other end of the spring (20) is fixedly connected to the lower surface of the pressing plate (3). The adjusting plate (4) is used to hold the medicine plate (7), the medicine plate (7) has a convex surface of the medicine tablets and is set close to the pressing plate (3), and the support plate (5) is supported in the gap between each row of medicine tablets on the flat surface of the medicine plate (7); The bottom surface of the pressing plate (3) is provided with a pressing sheet (31), and the bottom surface of the pressing sheet (31) is provided with a plurality of pressing protrusions (311). The pressing protrusions (311) are arranged in an array, and the pressing protrusions (311) correspond to the protrusions of the tablets on the medicine plate (7).
2. The foil-wrapped tablet dispenser according to claim 1, characterized in that, The upper surface of the base (1) is provided with a sink groove (11), and the medicine tray (6) is placed in the sink groove (11); The front end of the settling trough (11) is provided with a first inclined surface (110), which is used to allow the tablets that fall on the edge of the settling trough (11) to slide into the medicine tray (6).
3. The foil-wrapped tablet dispenser according to claim 2, characterized in that, The protrusions on both sides of the sink trough (11) are respectively provided with first sliding grooves (12), and the bottom of the adjusting plate (4) is provided with a guide slider (40), which is slidably connected to the first sliding groove (12).
4. The foil-packaged tablet dispenser according to claim 3, characterized in that, The adjusting plate (4) is L-shaped, and a slot (41) is provided on the horizontal surface of the adjusting plate (4). The base (1) is provided with a threaded hole (13). The projection of the slot (41) on the base (1) covers the threaded hole (13). The adjustment plate (4) includes a fixed knob (42), which passes through the slot (41) and is threadedly connected to the threaded hole (13). The bottom surface of the handheld part of the fixed knob (42) abuts against the surface of the adjustment plate (4).
5. The foil-packaged tablet dispenser according to claim 4, characterized in that, The handheld part is equipped with an anti-slip pattern.
6. The foil-packaged tablet dispenser according to claim 4, characterized in that, The outer end face of the horizontal plane of the adjustment plate (4) is provided with a hand-held protrusion (43), which is used to receive external force to move the adjustment plate (4).
7. The foil-packaged tablet dispenser according to claim 1, characterized in that, The lower surface of the pressing plate (3) is provided with a pressing boss (30), and the middle part of the mounting platform (2) is provided with a through groove (21). The through groove (21) is used to accommodate the pressing boss (30), and the pressing piece (31) is provided on the bottom surface of the pressing boss (30).
8. The foil-packaged tablet dispenser according to claim 7, characterized in that, The pressing piece (31) is slidably connected to the pressing boss (30).
9. The foil-encapsulated tablet dispenser according to claim 8, characterized in that, The pressing plate (31) is provided with mounting wings (310) on both sides, the pressing boss (30) is provided with a mounting groove (300) on the lower surface, and the mounting groove (300) is provided with a second sliding groove (301) on both sides. The mounting wings (310) and the second sliding groove (301) are slidably connected.
10. The foil-wrapped tablet dispenser according to any one of claims 1-9, characterized in that, The upper surface of the mounting platform (2) is provided with a plurality of hollow height limiting columns (22), the height limiting columns (22) are fixedly connected to the mounting platform (2), and some of the springs (20) are disposed in the hollow structure of the height limiting columns (22).