A Beckmann beam measuring device

Abstract

The present invention relates to the technical field of roadbed rebound Beckman beam detection equipment, and specifically discloses a Beckman beam measurement device, wherein a support seat comprises a base and a bracket plate; a main beam is connected to the bracket plate through a bearing; a detection head is provided at the right end of the main beam, a connecting cavity is provided at the left end, a first slide rod passes through a first slide slot, a second slide rod passes through a second slide slot, and a spring is provided between the right end face of the connecting cavity; a circular through hole is also provided at the left end of the main beam, and a square through hole is provided outside the circular through hole; a thread groove is provided on the left side of the connecting cavity, a first fixed block and a second fixed block are provided outside the thread groove, and a screw matching the internal thread of the thread groove is provided at the right end of the auxiliary beam. The present invention meets the problem of long-distance transportation and storage by dividing the Beckman beam into two parts; the impact on the connecting part is buffered by the flexible connection of the fixed block, the slide rod and the spring, thereby solving the problem that when the Beckman beam is impacted during transportation, various components are damaged, affecting the measurement effect and reducing the measurement efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of roadbed rebound Beckman beam detection equipment, and in particular to a Beckman beam measurement device. Background Art

[0002] The Beckman beam method is suitable for measuring the elastic deflection value of the pavement when static loading or very slow loading, and can well reflect the overall strength of the pavement. The whole is composed of a Beckman beam, a dial indicator and a meter stand. The Beckman beam is made of aluminum alloy and has a level bubble on it. The length ratio of its front arm (contacting the pavement) to the rear arm (equipped with a dial indicator) is 2:1. There are two lengths of deflection meters: one is 3.6m long, with front and rear arms of 2.4m and 1.2m respectively; the other is an extended deflection meter of 5.4m long, with front and rear arms of 3.6m and 1.8m respectively. When measuring on a semi-rigid base asphalt pavement or cement concrete pavement, it is advisable to use a Beckman beam deflection meter with a length of 5.4m and a BZZ-100 standard vehicle; the deflection value is measured by a dial indicator, and can also be measured by an automatic recording device. In order to make the test more accurate, the Beckman beam measuring instrument has a long overall length, which is inconvenient to carry, and its active parts are very easy to shake due to bumps during transportation, thereby causing certain damage to the beam body.

[0003] Existing devices such as the Chinese patent "A Road Deflection Meter" with patent number ZL202023169192.9 disclose a solution, in which the second Beckmann beam is hinged to the first Beckmann beam through a folding switch; the beam support is hinged to the first Beckmann beam and the second Beckmann beam respectively; a table is provided on the bracket, and the table is in contact with the second Beckmann beam. In this solution, the second Beckmann beam is hinged to the first Beckmann beam through a folding switch, and the second Beckmann beam and the second Beckmann beam can be folded together. After folding, the structure has high strength and will not be damaged, and it takes up little space and is easy to transport. Folding makes it easy to store the beam, but when the next location to be measured is close and needs to be transported over a short distance, it is troublesome to bend or dismantle and then transport it; but if it is transported directly, the connection part is relatively fragile, and it is easy to cause damage at the connection due to impact. At the same time, the left and right ends of the beam will also move up and down during transportation. Collision and damage will affect the measurement accuracy and reduce the measurement efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a Shellman beam measuring device to solve the problem that during short-distance transportation, the connection between the main beam and the auxiliary beam is impacted, and the two ends of the beam body shake up and down, causing damage, affecting the measurement accuracy and reducing the measurement efficiency.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a Beckman beam measuring device, comprising a main beam, a secondary beam and a support seat;

[0006] The support seat comprises a base and a bracket plate; the bracket plate is arranged on the base;

[0007] The main beam is connected to the bracket plate through a bearing; a detection head is provided at the right end of the main beam, and a connecting cavity is provided at the left end, and two opposite surfaces of the connecting cavity are provided with a first horizontal slide groove and a second slide groove; the first slide rod passes through the first slide groove, and a spring is provided between the first slide rod and the right end surface of the connecting cavity; the second slide rod passes through the second slide groove, and a spring is provided between the second slide rod and the right end surface of the connecting cavity; a circular through hole is also provided at the left end of the main beam, and two square through holes are provided outside the circular through hole; a thread groove matching the circular through hole is also provided on the left side of the connecting cavity, and a first fixing block and a second fixing block matching the two square through holes are provided outside the thread groove, the first fixing block is used to press against the lower part of the first slide rod, and the second fixing block is used to press against the lower part of the second slide rod;

[0008] The right end of the auxiliary beam is provided with a screw rod matching the internal thread of the thread groove.

[0009] As a further technical solution of the above solution, the ends of the first sliding rod and the second sliding rod are provided with protrusions, and the first fixing block and the second fixing block are provided with recesses matching the protrusions.

[0010] As a further technical solution of the above scheme, two bracket plates are provided, a connecting column is provided at the lower end of the main beam, the connecting column is arranged between the two bracket plates, the connecting column is provided with a first connecting block, and a second connecting block matching the first connecting block is provided on the inner side of the bracket plate facing the main beam.

[0011] As a further technical solution of the above scheme, the bracket plate is provided with a connecting column at the lower end of two main beams, the connecting column is arranged between the two bracket plates, the connecting column is provided with a vertical third slide groove, a slidable first connecting block is provided in the third slide groove, and the third slide groove is also provided with a positioning hole for fixing the first connecting block along the vertical direction; a second connecting block matching the first connecting block is provided on the inner side of the bracket plate facing the main beam; a vertical connecting plate is provided at the end of the first connecting block, and a limiting hole is provided on the top of the vertical connecting plate; after the vertical connecting plate passes through the second connecting block, the limiting block passes through the limiting hole to limit the position.

[0012] As a further technical solution of the above solution, the right end face of the connecting cavity is further provided with an extrusion block, the extrusion block sleeve is provided with a shock-absorbing spring, and the end of the extrusion block is further provided with a contact plate for pressing against the thread groove.

[0013] Compared with the prior art, the present invention has the following advantages and beneficial effects: the present invention divides the Beckman beam into two parts to meet the problems of long-distance transportation and storage; the main beam and the auxiliary beam are connected by means of screws and threaded grooves, and a fixing block is arranged on the threaded groove, and the impact on the connection part is buffered by the flexible connection of the fixing block, the sliding rod and the spring, thereby reducing the damage to the connection part caused by the impact; a connecting column is arranged at the lower end of the main beam, and the first connecting block on the connecting column and the second connecting block on the bracket plate are matched and fixed to complete the fixation of the main beam; the buffering of the connecting part and the fixation of the lower end of the main beam are combined to solve the problem that when the Beckman beam is impacted during transportation, the various components are impacted, shaken, collided, and damaged, which affects the measurement effect and reduces the measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the longitudinal section structure of the connecting cavity.

[0016] Figure 3 This is a schematic diagram of the structure from the side of the left end of the main beam.

[0017] Figure 4 This is a schematic diagram of the front structure of the connecting column.

[0018] Figure 5 It is a schematic diagram of the front structure of another embodiment of the connecting column.

[0019] The meanings of the numbers in the figure are: base-1; bracket plate-2; main beam-3; sub-beam-4; screw-501; threaded groove-502; first fixed block-503; first sliding rod-504; extrusion block-505; contact plate-506; first sliding groove-507; spring-508; bearing-601; vertical connecting plate-602; first connecting block-603; second connecting block-604; connecting column-605; circular through hole-7; square through hole-8; detection head-9. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention, so as to have a further understanding of the concept of the present invention, the technical problems solved, the technical features constituting the technical scheme and the technical effects brought about.

[0021] like Figure 1-Figure 3 As shown, a Beckman beam measuring device includes a main beam 3, a secondary beam 4 and a support seat;

[0022] The support base comprises a base 1 and a bracket plate 2; the bracket plate 2 is arranged on the base 1;

[0023] The main beam 3 is connected to the bracket plate 2 through a bearing 601; a detection head 9 is provided at the right end of the main beam 3, and a connecting cavity is provided at the left end, and a first transverse slide groove 507 and a second slide groove are provided at two opposite surfaces of the connecting cavity; the first slide rod 504 passes through the first slide groove 507, and a spring 508 is provided between the first slide rod 504 and the right end surface of the connecting cavity; the second slide rod passes through the second slide groove, and a spring is provided between the second end surface of the connecting cavity; a circular through hole 7 is also provided at the left end of the main beam 3, and two square through holes 8 are provided outside the circular through hole 7; a thread groove 502 matching the circular through hole 7 is also provided on the left side of the connecting cavity, and a first fixing block 503 and a second fixing block matching the two square through holes 8 are provided outside the thread groove 502, and the first fixing block 503 is used to press against the lower part of the first slide rod 504, and the second fixing block is used to press against the lower part of the second slide rod;

[0024] The right end of the auxiliary beam 4 is provided with a screw rod 501 matching the internal thread of the thread groove 502 .

[0025] The principle of the present invention is as follows: the length of the Beckman beam is relatively long, and the beam body is generally divided into multiple sections during long-distance transportation and storage. However, in order to improve efficiency during short-distance transportation at the construction site, the Beckman beam is directly transported, and the Beckman beam is impacted during transportation; the connection and the left and right ends of the beam body will shake, causing damage to the device and affecting the measurement. When the present invention needs to measure, since the sizes of the thread groove 502 and the circular through hole 7 match, the sizes of the first fixed block 503, the second fixed block and the square through hole 8 match; first, the thread groove 502, the first fixed block 503 and the second fixed block are respectively placed in the connection cavity through the circular through hole 7 and the two square through holes 8. The thread groove 502 is rotated, and the first fixed block 503 and the second fixed block rotate along with the thread groove 502. The first fixed block 503 and the second fixed block move in the connecting cavity and are no longer within the range of the square through hole 8. The first fixed block 503 and the second fixed block press against the inner wall of the left end face of the main beam 3 to prevent the thread groove 502 from detaching from the main beam 3; after the first fixed block 503 and the second fixed block enter the connecting cavity, they press against the first slide bar 504 and the second slide bar respectively. Since a spring 508 is provided between the first slide bar 504, the second slide bar and the right end face of the connecting cavity, a flexible connection between the first fixed block 503, the second fixed block and the right end face of the connecting cavity is realized; the screw 501 on the sub-beam 4 is inserted into the thread groove 502. Since the screw 501 The thread on it matches the internal thread of the thread groove 502, and the screw 501 is tightened to achieve the connection between the auxiliary beam 4 and the main beam 3; when impacted, the first fixed block 503 and the second fixed block respectively squeeze the first slide bar 504 and the second slide bar to move to the right, and the first slide bar 504 and the second slide bar slide in the second slide groove 507 and apply pressure to the spring 508. The spring 508 is deformed by the force, and the reaction force pushes the first fixed block 503 and the second fixed block to reset and maintain a fixed state; a damping member can be set in the spring 508 for shock absorption, further reducing the impact of vibration on the connection part. The above device can transform the rigid connection into a flexible connection, which can better protect the components when impacted and ensure the stability of the device.

[0026] like Figure 1 As shown, the present invention further discloses a preferred embodiment of the above-mentioned sliding rod and fixed block, wherein the ends of the first sliding rod 504 and the second sliding rod are provided with a protrusion, and the first fixed block 503 and the second fixed block are provided with a recessed portion matching the protrusion. In this embodiment, the protrusion is provided on the first sliding rod 504, the second sliding rod and the first fixed block 503, and the second fixed block to cooperate with the recessed portion, so that the fixed block and the sliding rod are more stable when in contact, the thread groove 502 no longer moves in the upper and lower spaces, and the connection is tighter, thereby improving the stability of the device.

[0027] like Figure 4As shown, the present invention further discloses a preferred embodiment of the main beam, wherein two bracket plates 2 are provided, a connecting column 605 is provided at the lower end of the main beam 3, the connecting column 605 is arranged between the two bracket plates 2, the connecting column 605 is provided with a first connecting block 603, and the inner side of the bracket plate 2 facing the main beam 3 is provided with a second connecting block 604 matching the first connecting block 603. In this embodiment, the connecting column 605 is provided at the lower end of the main beam 3, and the first connecting block 603 and the second connecting block 604 are fixed after the connecting rod passes through the first connecting block 603 and the second connecting block 604 in sequence, so as to prevent the main beam 3 from shaking and colliding, thereby causing damage to the beam body.

[0028] like Figure 5 As shown, the present invention further discloses a preferred embodiment of the above main beam, wherein two bracket plates 2 are provided, a connecting column 605 is provided at the lower end of the main beam 3, the connecting column 605 is arranged between the two bracket plates 2, the connecting column 605 is provided with a vertical third slide groove, a slidable first connecting block 603 is provided in the third slide groove, and a positioning hole for fixing the first connecting block 603 is also provided in the third slide groove along the vertical direction; a second connecting block 604 matching the first connecting block 603 is provided on the inner side of the bracket plate 2 toward the main beam 3; a vertical connecting plate 602 is provided at the end of the first connecting block 603, and a limiting hole is provided at the top of the vertical connecting plate 602; after the vertical connecting plate 602 passes through the second connecting block 604, the limiting block passes through the limiting hole to limit. In this embodiment, when the beam body is transported, a connecting column 605 is provided at the lower end of the main beam 3, and when it needs to be fixed, the operator slides the first connecting block 603 toward the second connecting block 604. When the first connecting block 603 is close to the second connecting block 604, the vertical connecting plate 602 on the first connecting block 603 passes through the second connecting block 604, and the limiting hole on the top of the vertical connecting plate 602 is located above the second connecting block 604. At this time, the limiting block is inserted into the limiting hole, and the limiting block contacts the upper end surface of the second connecting block 604 when moving downward due to its own gravity, limiting the vertical connecting plate 602 from falling downward, so that the first connecting block 603 and the second connecting block 604 are connected together to prevent the main beam 3 from shaking and colliding, causing damage to the beam body; after the transportation is completed, the limiting block is taken out when measurement is required, and the first connecting block 603 is separated from the second connecting block 604, ensuring the normal measurement of the beam body.

[0029] like Figure 2As shown, the present invention further discloses a preferred embodiment of the above-mentioned connecting chamber, wherein the right end face of the connecting chamber is further provided with an extrusion block 505, the extrusion block 505 is sleeved with a shock absorbing spring, and the end of the extrusion block 505 is further provided with a contact plate 506 for pressing against the thread groove 502. In this embodiment, after the screw 501 is screwed into the thread groove 502, the contact plate 506 is squeezed when encountering a collision, and the shock absorbing spring on the extrusion block 505 is used for shock absorption and buffering, so as to avoid damage to the screw 501 and the thread groove 502 caused by excessive impact, and secondary buffering is performed on the basis of the spring 508, thereby increasing the stability of the device.

[0030] The terms “connection” and “fixation” mentioned in the description of the present invention may refer to fixed connection, processing and forming, welding or mechanical connection. The specific meanings of the above terms in the present invention shall be understood according to the specific circumstances.

[0031] In the description of the present invention, the terms "center", "upper", "lower", "horizontal", "inside", "outside", etc., which indicate the orientation or position relationship, are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying a specific orientation that the device or element referred to must have, and therefore cannot be understood as a limitation on the present invention.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A Beckman beam measuring device, characterized in that: It comprises a main beam (3), a secondary beam (4) and a support seat; The support base comprises a base (1) and a support plate (2); the support plate (2) is arranged on the base (1); The main beam (3) is connected to the bracket plate (2) through a bearing (601); a detection head (9) is provided at the right end of the main beam (3), and a connecting cavity is provided at the left end, and two opposite surfaces of the connecting cavity are provided with a first transverse slide groove (507) and a second slide groove; the first slide rod (504) passes through the first slide groove (507), and a spring (508) is provided between the first slide rod and the right end surface of the connecting cavity; the second slide rod passes through the second slide groove, and a spring is provided between the second slide rod and the right end surface of the connecting cavity; a circular through hole (7) is also provided at the left end of the main beam (3), and two square through holes (8) are provided outside the circular through hole (7); a thread groove (502) matching the circular through hole (7) is also provided on the left side of the connecting cavity, and a first fixed block (503) and a second fixed block respectively matching the two square through holes (8) are provided outside the thread groove (502), the first fixed block (503) is used to press against the lower part of the first slide rod (504), and the second fixed block is used to press against the lower part of the second slide rod; The auxiliary beam (4) has a screw (501) at the right end thereof that matches the internal thread of the thread groove (502); The support plates (2) are provided with two, the lower end of the main beam (3) is provided with a connecting column (605), the connecting column (605) is arranged between the two support plates (2), the connecting column (605) is provided with a vertical third slide groove, a slidable first connecting block (603) is provided in the third slide groove, and the third slide groove is also provided with a positioning hole for fixing the first connecting block (603) along the vertical direction; the inner side of the support plate (2) is provided with a second connecting block (604) matching with the first connecting block (603) towards the main beam (3); the end of the first connecting block (603) is provided with a vertical connecting plate (602), and the top of the vertical connecting plate (602) is provided with a limiting hole; after the vertical connecting plate (602) passes through the second connecting block (604), the limiting block passes through the limiting hole to limit.

2. A Beckman beam measuring device as claimed in claim 1, characterized in that: The ends of the first sliding rod (504) and the second sliding rod are provided with protruding parts, and the first fixing block (503) and the second fixing block are provided with recessed parts matching the protruding parts.

3. A Beckman beam measuring device as claimed in claim 1, characterized in that: The right end surface of the connecting cavity is also provided with an extrusion block (505), the extrusion block (505) is sleeved with a shock absorbing spring, and the end of the extrusion block (505) is also provided with a contact plate (506) for pressing against the threaded groove (502).

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