Pressure head lifting structure and particulate matter concentration monitor
By employing a lever design for the lifting and pressing components in the β-ray particulate matter concentration monitor, the problems of air leakage and high maintenance costs caused by wear of the pressure head lifting structure are solved, achieving higher measurement accuracy and longer maintenance cycles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO MINGDE ENVIRONMENTAL PROTECTION INSTR CO LTD
- Filing Date
- 2025-09-15
- Publication Date
- 2026-07-31
AI Technical Summary
The pressure head lifting structure of existing beta-ray particulate matter concentration monitors is prone to wear after long-term operation, which increases the risk of gas leakage and maintenance costs, and affects the accuracy of measurement.
The design employs a lifting and clamping assembly, utilizing the lever principle to place the force points of the clamping mechanism on both sides of the axis symmetrically. The lifting block swings to drive the clamping mechanism to rise and fall, reducing friction and wear, minimizing the risk of air leakage, and extending the maintenance cycle.
It effectively reduces the risk of gas leakage and maintenance costs, ensures the accuracy and reliability of measurement data, and extends the maintenance cycle of the equipment.
Smart Images
Figure CN224581335U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of particulate matter concentration monitoring technology, and more specifically, to a pressure head lifting structure and a particulate matter concentration monitor. Background Technology
[0002] Beta-ray absorption is an extraction-based particulate matter monitoring technology with mature applications in air quality monitoring. Compared to other particulate matter monitoring technologies, its measurement results are unaffected by particulate matter characteristics (particle size distribution, refractive index, etc.). Therefore, changes in dust particle size and color have no impact on the measurement. Beta rays have a certain penetrating power; when they pass through an absorbing material of a certain thickness, their intensity gradually decreases with increasing thickness of the absorbing material, a phenomenon known as beta absorption.
[0003] In related technologies, monitoring instruments using the β-ray absorption method are equipped with a pressure head lifting structure. The main function of the pressure head lifting structure is to press the paper tape tightly to ensure a seal when collecting particulate matter. Therefore, how to design a pressure head lifting structure is particularly important for the accuracy of the measurement. Utility Model Content
[0004] The purpose of this application is to provide a pressure head lifting structure and a particulate matter concentration monitor, which can effectively reduce the risk of gas leakage and maintenance costs, and ensure the accuracy of measurement data.
[0005] In a first aspect, embodiments of this application provide a pressure head lifting structure, comprising: a lifting assembly including a lifting mechanism and a lifting block, wherein the lifting mechanism is connected to the lifting block and the lifting block has a clearance space; and a pressing assembly including a fixing mechanism and a pressing mechanism, wherein the fixing mechanism is connected to the lifting mechanism and the fixing mechanism has a receiving space, one end of the lifting block near the clearance space passes through the fixing mechanism and extends into the receiving space, the pressing mechanism is connected to the fixing mechanism, and at least a portion of the pressing mechanism is disposed in the receiving space, and the structure of this portion is engaged with the clearance space.
[0006] In the above implementation process, the clamping mechanism is set on the fixed mechanism and connected to the lifting mechanism. The lifting block passes through one end of the fixed mechanism and is engaged with the clamping mechanism. When the lifting mechanism is driven, the lifting block can be used as a fulcrum to make the clamping mechanism rise or fall, thereby realizing the release when the paper tape is clamped, effectively reducing the risk of air leakage and maintenance costs, and ensuring the accuracy of measurement data.
[0007] In some embodiments, the lifting mechanism includes a driving member, an eccentric member, and a connecting member. The driving member is connected to the eccentric member and the connecting member respectively. The eccentric member is connected to the side of the lifting block away from the clearance space, and the connecting member is connected to the lifting block.
[0008] In the above process, the eccentric component and the connecting component are driven by the driving component. The eccentric component is in contact with the lifting block, and the connecting component is connected to the lifting block. When the driving component is driven, the eccentric component acts on the lifting block, causing the lifting block to swing around the connecting component in a circular motion, forming a lever-like principle, thereby realizing the lifting and lowering of the lifting block. Ultimately, this drives the pressing mechanism to press or release the paper tape, effectively reducing the risk of air leakage and maintenance costs, and ensuring the accuracy of the measurement data.
[0009] In some embodiments, the connecting component includes a first bearing housing, a second bearing housing, and a central shaft. The first bearing housing is connected to the driving member, and the first bearing housing and the second bearing housing are respectively connected to the fixing mechanism. The central shaft passes through the lifting block and is respectively connected to the first bearing housing and the second bearing housing.
[0010] In the above implementation process, the central shaft is set between the first bearing seat and the second bearing seat, and after the central shaft passes through the lifting block, it is connected to the first bearing seat and the second bearing seat respectively. The first bearing seat and the second bearing seat are respectively connected to the fixing mechanism, so that the lifting block can swing around the central shaft under the action of the eccentric part, thereby driving the movement of the pressing mechanism, which can ensure the paper tape is pressed during use, thereby ensuring a seal.
[0011] In some embodiments, the lifting block has a groove, and at least a portion of the eccentric member is disposed in the groove so that when the driving member drives the eccentric member to rotate, the lifting block rotates relative to the connecting member.
[0012] In the above process, the eccentric part is adapted to the groove of the lifting block, and can drive the lifting block to swing under the drive of the driving part, so as to realize the pressing mechanism pressing or releasing the paper tape.
[0013] In some embodiments, the lifting block is provided with support legs, and there are two support legs, which are spaced apart to form the clearance space.
[0014] In the above implementation process, one end of the lifting block is provided with two support legs, and a clamping mechanism is provided between the two support legs. When the lifting block swings in a circular motion, the two support legs act on the clamping mechanism to transmit torque to the clamping mechanism.
[0015] In some embodiments, the lifting assembly further includes a detection plate and a detection switch. The detection plate and the detection switch are respectively connected to the lifting mechanism, and the detection switch is used to detect the detection plate. Through the cooperation of the detection switch and the detection plate, when the detection plate rotates to the detection position, the detection switch sends information to control the lifting mechanism to stop operating.
[0016] In some embodiments, the pressing mechanism includes a pressure head, a support block, and a spring. The pressure head passes through the receiving space, the support block and the spring are disposed in the receiving space, and the support block and the spring are respectively sleeved on the pressure head. One end of the spring abuts against the support block, and the other end abuts against the fixing mechanism.
[0017] In the above process, the support block and spring are both assembled on the pressure head, and the spring abuts against the support block and the fixing mechanism respectively. The pressure head is used to press or release the paper tape. During normal use, the pressure head presses the paper tape under the action of the spring. When sampling is completed, the lifting mechanism rotates and drives the support block and pressure head to move upward against the elastic force of the spring to the designated position through the lifting block. Then the lifting mechanism stops. At this time, the pressure head and the paper tape separate, and the paper tape can move forward under the drive of the corresponding drive component to change to the next blank position. When the next detection cycle begins, the above pressing action is repeated. The whole structure adopts a lever-like principle, which can extend the maintenance cycle, effectively reduce the risk of air leakage and operation and maintenance costs, and ensure the accuracy of measurement data.
[0018] In some embodiments, the fixing mechanism includes a fixing plate and a guide seat, the fixing plate being connected to the guide seat, and the fixing plate and the guide seat enclosing the receiving space.
[0019] In the above process, the cooperation between the fixed plate and the guide seat enables the clamping mechanism to move in the specified direction, thereby clamping and releasing the paper tape and facilitating the measurement of particulate matter data in the air.
[0020] In some embodiments, one end of the guide seat is provided with a first mounting hole, and the other end is provided with a second mounting hole, with the pressure head disposed within the first mounting hole and the second mounting hole. By adapting the pressure head to the first mounting hole and the second mounting hole respectively, not only can the pressure head be fixed, but it can also be guided when the pressure head moves, effectively reducing the risk of air leakage.
[0021] Secondly, this application also provides a particulate matter concentration monitor, comprising: a support assembly including a support base and an air outlet pipe, the support base being connected to the air outlet pipe; and a pressure head lifting structure as described in any of the above claims, the pressure head lifting structure being disposed on the side of the support base away from the air outlet pipe, and the pressure head lifting structure being used to place a paper tape between the support base and the support base.
[0022] In the above implementation process, the clamping mechanism is set on the fixed mechanism and connected to the lifting mechanism. The lifting block passes through one end of the fixed mechanism and is engaged with the clamping mechanism. When the lifting mechanism is driven, the lifting block can be used as a fulcrum to make the clamping mechanism rise or fall. Through cooperation with the support component, the paper tape can be released when it is clamped, which effectively reduces the risk of air leakage and maintenance costs, and ensures the accuracy of measurement data.
[0023] Other features and advantages of this application will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the above-described techniques of this application.
[0024] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of the pressure head lifting structure provided in the embodiments of this application; Figure 2 This is a schematic diagram of the pressure head lifting structure for pressing the paper tape according to an embodiment of this application; Figure 3 This is a schematic diagram of the pressure head lifting structure for releasing the paper tape provided in the embodiments of this application; Figure 4 This is a schematic diagram of the lifting assembly of the pressure head lifting structure provided in the embodiments of this application.
[0027] Reference numerals: 1. Lifting assembly; 101. Driving component; 102. Eccentric component; 103. First bearing seat; 104. Second bearing seat; 105. Central shaft; 106. Lifting block; 1061. Support leg; 107. Detection plate; 108. Detection switch; 2. Pressing assembly; 201. Press head; 202. Support block; 203. Spring; 204. Fixing plate; 205. Guide seat; 3. Support assembly; 301. Support seat; 302. Air outlet pipe; 4. Paper tape. Detailed Implementation
[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0029] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0030] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0031] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or a point connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0032] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.
[0033] Example The principle of beta-ray diffraction for measuring particulate matter concentration is based on the attenuation characteristics of beta rays as they pass through matter. This method uses a sampling pump to draw ambient air into a sampling tube, trapping particulate matter in the airflow onto a paper tape. When beta rays penetrate the particulate-laden paper tape, their intensity is reduced due to absorption by the particles. The attenuation level of the beta rays is detected by a photomultiplier tube, from which the particulate matter concentration can be calculated. During continuous monitoring, blank sampling points on the paper tape need to be moved to the sampling gas path at each detection cycle, requiring the pressure head to rise or fall to move the paper tape.
[0034] Most existing beta-ray particulate matter concentration monitors use a pressure head lifting mechanism that relies on the interaction of a spring and an eccentric wheel. When collecting particulate matter, the pressure head presses the paper tape tightly under the action of the spring to ensure a seal. When changing the sampling point on the paper tape, the motor drives the eccentric wheel to rotate, overcoming the force of the spring and causing the pressure head to disengage from the paper tape to complete the sampling point change. The pressure head will then move linearly within two guide holes on the spring seat.
[0035] In the aforementioned pressure head lifting structure, the eccentric wheel exerts an eccentric torque on the pressure head. Over time, this can lead to wear on the outer side of the pressure head and the inner side of the guide hole, causing debris to accumulate between the pressure head and the guide hole. This increases friction and can result in insufficient spring force to press the pressure head firmly against the paper tape, increasing the risk of air leakage. Therefore, frequent cleaning and maintenance of the friction points are required, increasing maintenance costs. Furthermore, debris may adhere to the paper tape as the pressure head moves up and down, affecting the accuracy of the measurement.
[0036] In view of this, such as Figures 1-4 As shown, in a first aspect, embodiments of this application provide a pressure head lifting structure, including: a lifting assembly 1, including a lifting mechanism and a lifting block 106, wherein the lifting mechanism is connected to the lifting block 106, and the lifting block 106 has a clearance space; and a pressing assembly 2, including a fixing mechanism and a pressing mechanism, wherein the fixing mechanism is connected to the lifting mechanism, the fixing mechanism has a receiving space, one end of the lifting block 106 near the clearance space passes through the fixing mechanism and extends into the receiving space, the pressing mechanism is connected to the fixing mechanism, and at least a portion of the pressing mechanism is disposed in the receiving space, and the structure of this portion is engaged with the clearance space.
[0037] In this application, the pressure head lifting structure can be applied to a beta-ray method particulate matter concentration monitoring instrument. The pressure head lifting structure uses the lever principle to place the force points of the pressing mechanism on both sides of the axis of the pressing mechanism when it is raised and lowered, thereby eliminating the eccentric torque generated when the eccentric wheel acts on the pressure head 201 in the prior art, reducing the friction between the pressure head 201 and the guide hole, and thus extending the maintenance cycle.
[0038] For example, the lifting mechanism refers to the component used to provide the power required for the lifting block 106 to lift. In this application, the lifting block 106 can act as a lever-like component. That is, the lifting mechanism is connected to the lifting block 106, which can not only provide the power required for the lifting block 106 to rotate, but also provide a fulcrum for the lifting block 106 to rotate, so that the lifting block 106 can rotate around the fulcrum. One end of the lifting block 106 is connected to the lifting mechanism, and the other end is connected to the pressing mechanism. Finally, during the swinging process of the lifting block 106, the pressing mechanism is driven to lift.
[0039] The fixing mechanism refers to the component used to provide the installation position for the lifting mechanism and the pressing mechanism. The lifting block 106 and the pressing mechanism are both connected to the fixing mechanism. The pressing mechanism is the component used to press or release the paper tape 4. The pressing mechanism is located above the paper tape 4. Its pressing or releasing principle is to use the lifting mechanism to drive the lifting block 106 to swing, so that the lifting block 106 forms a lever-like structure, thereby driving the pressing mechanism to move.
[0040] In the above implementation process, the clamping mechanism is set on the fixed mechanism and connected to the lifting mechanism. The lifting block 106 passes through one end of the fixed mechanism and is engaged with the clamping mechanism. When the lifting mechanism is driven, the lifting block 106 can be used as a fulcrum to make the clamping mechanism rise or fall, thereby realizing the release when the paper tape 4 is clamped, effectively reducing the risk of air leakage and maintenance costs, and ensuring the accuracy of measurement data.
[0041] like Figure 4 As shown, the lifting mechanism includes a driving component 101, an eccentric component 102, and a connecting component. The driving component 101 is connected to the eccentric component 102 and the connecting component respectively. The eccentric component 102 is connected to the side of the lifting block 106 away from the clearance space, and the connecting component is connected to the lifting block 106.
[0042] For example, the driving component 101 refers to the component used to provide the torque required for the rotation of the eccentric component 102 (i.e., the eccentric wheel). The driving component 101 includes a drive motor. The driving component 101 is fixed to one side of the connecting component. The eccentric component 102 is connected to the driving end of the driving component 101 and is adapted to the lifting block 106. The connecting component is used to provide a fulcrum for the lifting block 106, so that when the driving component 101 is driven, the lifting block 106 can be driven to swing around the fulcrum through the eccentric component 102.
[0043] In the above process, the eccentric component 102 and the connecting component are driven by the driving component 101. The eccentric component 102 is in contact with the lifting block 106, and the connecting component is connected to the lifting block 106. When the driving component 101 is driven, the eccentric component 102 acts on the lifting block 106, causing the lifting block 106 to swing around the connecting component in a circular motion, forming a lever-like principle, thereby realizing the lifting of the lifting block 106. Ultimately, this drives the pressing mechanism to press or release the paper tape 4, effectively reducing the risk of air leakage and maintenance costs, and ensuring the accuracy of the measurement data.
[0044] Please refer to again Figure 4 The connecting components include a first bearing seat 103, a second bearing seat 104, and a central shaft 105. The first bearing seat 103 is connected to the driving member 101. The first bearing seat 103 and the second bearing seat 104 are respectively connected to the fixing mechanism. The driving member 101 is connected to the side of the first bearing seat 103 away from the second bearing seat 104. The central shaft 105 passes through the lifting block 106 and is connected to the first bearing seat 103 and the second bearing seat 104 respectively.
[0045] For example, the central shaft 105 is a component used to provide the fulcrum required when the lifting block 106 swings. One end of the central shaft 105 is disposed on the first bearing seat 103, and the other end is disposed on the second bearing seat 104. The central shaft 105 passes through the lifting block 106. The central shaft 105 can rotate relative to the first bearing seat 103 and the second bearing seat 104. Since the lifting block 106 is disposed on the central shaft 105, it can rotate with the central shaft 105.
[0046] In the above implementation process, the central shaft 105 is disposed between the first bearing seat 103 and the second bearing seat 104. After the central shaft 105 passes through the lifting block 106, it is connected to the first bearing seat 103 and the second bearing seat 104 respectively. The first bearing seat 103 and the second bearing seat 104 are respectively connected to the fixing mechanism, so that the lifting block 106 can swing around the central shaft 105 under the action of the eccentric member 102, thereby driving the movement of the pressing mechanism. This ensures that the paper tape 4 is pressed tightly during use, thereby ensuring a seal.
[0047] In some embodiments, the lifting block 106 has a groove, and at least a portion of the eccentric member 102 is disposed in the groove, wherein the groove may be configured to be irregular in shape, so that when the driving member 101 drives the eccentric member 102 to rotate, the lifting block 106 rotates relative to the connecting member.
[0048] In the above process, the eccentric part 102 is adapted to the groove of the lifting block 106, and can drive the lifting block 106 to swing under the drive of the driving part 101, so as to realize the pressing mechanism pressing or releasing the paper tape 4.
[0049] like Figure 4 As shown, the lifting block 106 is provided with two support legs 1061, which are spaced apart to form the clearance space. For example, the support legs 1061 pass through the through holes of the fixing plate 204 of the fixing mechanism and are symmetrically distributed on both sides of the support block 202 of the pressing mechanism. The support legs 1061 are provided with arc surfaces that are tangentially in contact with the lower end surface of the support block 202. Of course, the support legs 1061 can also be configured in other structural forms, as long as they can drive the support block 202 to move. No specific limitation is made here.
[0050] In the above implementation process, one end of the lifting block 106 is provided with two support legs 1061, and a pressing mechanism is provided between the two support legs 1061. When the lifting block 106 swings in a circular motion, the two support legs 1061 act on the pressing mechanism to transmit torque to the pressing mechanism.
[0051] like Figures 1-4 As shown, the lifting assembly 1 also includes a detection plate 107 and a detection switch 108. The detection plate 107 and the detection switch 108 are respectively connected to the lifting mechanism, and the detection switch 108 is used to detect the detection plate 107. For example, the drive component 101 is provided with a motor shaft, one end of which is connected to the eccentric component 102, and the other end is connected to the detection plate 107. Through the cooperation of the detection switch 108 and the detection plate 107, when the detection plate 107 rotates to the detection position, the detection switch 108 sends information to control the lifting mechanism to stop its operation.
[0052] like Figures 1-3 As shown, the pressing mechanism includes a pressing head 201, a support block 202, and a spring 203. The pressing head 201 passes through the receiving space, and the support block 202 and the spring 203 are disposed in the receiving space. The support block 202 and the spring 203 are respectively sleeved on the pressing head 201. The support block 202 can be fixedly connected to the pressing head 201 to realize the synchronous movement of the lifting component 1 driving the support block 202 and the pressing head 201. One end of the spring 203 abuts against the support block 202, and the other end abuts against the fixing mechanism.
[0053] For example, the pressure head 201 refers to the component used to press or release the paper tape 4. The pressure head 201 is located above the paper tape 4. The lower end of the pressure head 201 can be protruded from the bottom of the fixing mechanism by the action of the lifting component 1, or moved to be flush with the bottom of the fixing mechanism, or moved to the receiving space of the fixing mechanism, etc.
[0054] In the above implementation process, the support block 202 and the spring 203 are both assembled on the pressure head 201, and the spring 203 abuts against the support block 202 and the fixing mechanism respectively. The pressure head 201 is used to press or release the paper tape 4. During normal sampling, the pressure head 201 presses the paper tape 4 under the action of the spring 203. When the sampling is completed, the lifting mechanism rotates and drives the support block 202 and the pressure head 201 to move upward to the designated position through the lifting block 106, overcoming the elastic force of the spring 203. Then the lifting mechanism stops. At this time, the pressure head 201 and the paper tape 4 separate, and the paper tape 4 can move forward under the corresponding driving component to change to the next blank sampling point. When the next detection cycle begins, the above pressing action is repeated. The whole structure adopts a lever-like principle, which can extend the maintenance cycle, effectively reduce the risk of air leakage and operation and maintenance costs, and ensure the accuracy of measurement data.
[0055] like Figures 1-3 As shown, the fixing mechanism includes a fixing plate 204 and a guide seat 205. The fixing plate 204 is connected to the guide seat 205, and the fixing plate 204 and the guide seat 205 enclose the receiving space.
[0056] For example, one end of the fixing plate 204 is fixedly connected to the first bearing seat 103 and the second bearing seat 104, and the fixing method includes welding, bolt connection, etc. The guide seat 205 is disposed on the side of the fixing plate 204 away from the lifting mechanism, and the guide seat 205 is fixedly connected to the fixing plate 204, and the fixing method includes welding, bolt connection, etc.
[0057] In the above process, the cooperation between the fixed plate 204 and the guide seat 205 enables the clamping mechanism to move in the specified direction, thereby clamping and releasing the paper tape 4 and facilitating the measurement of particulate matter data in the air.
[0058] In some embodiments, one end of the guide seat 205 is provided with a first mounting hole, and the other end is provided with a second mounting hole. The pressure head 201 is disposed in the first mounting hole and the second mounting hole. By adapting the pressure head 201 to the first mounting hole and the second mounting hole respectively, not only can the pressure head 201 be fixed, but also the pressure head 201 can be guided when moving, effectively reducing the risk of air leakage.
[0059] Secondly, this application also provides a particulate matter concentration monitor, including: a support assembly 3, including a support base 301 and an air outlet pipe 302, wherein the support base 301 is connected to the air outlet pipe 302; and a pressure head lifting structure as described above, wherein the pressure head lifting structure is disposed on the side of the support base 301 away from the air outlet pipe 302, and the pressure head lifting structure and the support base 301 are used to place a paper tape 4, wherein the support base 301 can support the paper tape 4 and cooperate with the pressure head 201 to press the paper tape 4, and the air outlet pipe 302 is fixed below the support base 301, the main function of the air outlet pipe 302 is to guide the airflow outward.
[0060] In the above implementation process, the clamping mechanism is set on the fixed mechanism and connected to the lifting mechanism. The lifting block 106 passes through one end of the fixed mechanism and is engaged with the clamping mechanism. When the lifting mechanism is driven, the lifting block 106 can be used as a fulcrum to make the clamping mechanism rise or fall. Through cooperation with the support component 3, the paper tape 4 can be released when it is clamped, which effectively reduces the risk of air leakage and maintenance costs, and ensures the accuracy of measurement data.
[0061] In all embodiments of this application, "large" and "small" are relative terms, "more" and "less" are relative terms, and "upper" and "lower" are relative terms. The embodiments of this application will not elaborate further on the expression of such relative terms.
[0062] It should be understood that the phrases "in this embodiment," "in this application embodiment," or "as an optional implementation" throughout the specification mean that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, the phrases "in this embodiment," "in this application embodiment," or "as an optional implementation" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this application.
[0063] In the various embodiments of this application, it should be understood that the sequence number of each process does not necessarily imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.
[0064] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.
Claims
1. A ram-lifting structure, characterized by, include: A lifting assembly includes a lifting mechanism and a lifting block, wherein the lifting mechanism is connected to the lifting block and the lifting block has clearance space; A clamping assembly includes a fixing mechanism and a clamping mechanism. The fixing mechanism is connected to the lifting mechanism and has a receiving space. One end of the lifting block near the clearance space passes through the fixing mechanism and extends into the receiving space. The clamping mechanism is connected to the fixing mechanism, and at least a portion of the structure of the clamping mechanism is disposed in the receiving space, and the structure of this portion engages with the clearance space.
2. The ram-lifting structure according to claim 1, characterized by The lifting mechanism includes a driving component, an eccentric component, and a connecting component. The driving component is connected to the eccentric component and the connecting component respectively. The eccentric component is connected to the side of the lifting block away from the clearance space, and the connecting component is connected to the lifting block.
3. The ram-lifting structure according to claim 2, characterized by The connecting component includes a first bearing seat, a second bearing seat, and a central shaft. The first bearing seat is connected to the driving component, and the first bearing seat and the second bearing seat are respectively connected to the fixing mechanism. The central shaft passes through the lifting block and is respectively connected to the first bearing seat and the second bearing seat.
4. The ram-lifting structure according to claim 2 or 3, characterized in that The lifting block has a groove, and at least a portion of the eccentric member is disposed in the groove so that when the driving member drives the eccentric member to rotate, the lifting block rotates relative to the connecting member.
5. The ram-lifting structure according to claim 1, characterized by The lifting block is provided with support legs, and there are two support legs, which are spaced apart to form the clearance space.
6. The ram-lifting structure according to claim 1, wherein The lifting assembly also includes a detection plate and a detection switch. The detection plate and the detection switch are respectively connected to the lifting mechanism, and the detection switch is used to detect the detection plate.
7. The ram-lifting structure according to claim 1, wherein The pressing mechanism includes a pressure head, a support block, and a spring. The pressure head passes through the receiving space, and the support block and the spring are disposed in the receiving space. The support block and the spring are respectively sleeved on the pressure head. One end of the spring abuts against the support block, and the other end abuts against the fixing mechanism.
8. The ram-lifting structure of claim 1, wherein The fixing mechanism includes a fixing plate and a guide seat. The fixing plate is connected to the guide seat, and the fixing plate and the guide seat enclose the receiving space.
9. The ram-lifting structure according to claim 8, wherein One end of the guide seat is provided with a first mounting hole, and the other end is provided with a second mounting hole. The pressure head is disposed in the first mounting hole and the second mounting hole.
10. A particulate matter concentration monitor, characterized by, include: A support assembly includes a support base and an air outlet pipe, wherein the support base is connected to the air outlet pipe; and The pressure head lifting structure as described in any one of claims 1-9, wherein the pressure head lifting structure is disposed on the side of the support base away from the air outlet pipe, and the space between the pressure head lifting structure and the support base is used for placing paper tape.